HomeH3CH3CSE-Routing & SwitchingIntroducing GB0-371-ENU Exam Dumps: A Comprehensive Guide for H3CSE-Routing & Switching Certification

September 23, 2023

Introducing GB0-371-ENU Exam Dumps: A Comprehensive Guide for H3CSE-Routing & Switching Certification

As an aspiring H3CSE-Routing & Switching professional, it is crucial to have the right resources and study materials to prepare for the certification exams. In our previous blog post, we introduced the GB0-391-ENU exam dumps, which proved to be extremely helpful for candidates. Continuing our commitment to assist aspiring professionals, today we are excited to introduce the GB0-371-ENU exam dumps. The newest H3C GB0-371-ENU dumps cover the major technologies used in building high-performance campus networks, allowing candidates to master the design and construction of such networks. With the help of these exam dumps, you can ensure a successful pass in the GB0-371-ENU H3C Certified Senior Engineer for H3CRouting & Switching exam. With the assistance of the GB0-371-ENU exam dumps, candidates can enhance their knowledge and skills, ensuring a successful pass in the GB0-371-ENU exam. Don’t miss out on this opportunity to excel in your H3CSE-Routing & Switching career!

H3C Certified Senior Engineer for H3CRouting & Switching GB0-371-ENU Free Dumps

1. The figure shows the stable topology after STP calculation and convergence, then the following statements are correct:

SWA is the root bridge in the network

The BPDU is a configuration BPDU, the destination address is 01-80-C2-00-00-0

The sending period of this BPDU is HelloTime

The port saves the aging time of the BPDU as MaxAge

2. Regarding the configuration BPDU and TCM BPDU, the statements are correct

Configure BPDUs to be sent only from the designated port, and TCNBPDUs to be sent only from the root port

Configuration BPDUs are usually only sent periodically by the root bridge, and TCNBPDUs may be sent by other bridges except the root bridge.

The configuration BPDU is usually received only from the root port, and the TCNBPDU is only received from the designated port

Alternate port will neither send configuration BPDU nor TCN BPDU

3. Regarding the generation of TCN BPDUs, which of the following statements are correct

STP-enabled non-root bridge switch If a port is connected to a PC, when the port enters the Forwarding switch, no TCN BPDU will be generated

If the designated port link of a switch in the network is broken, the switch must generate TCN BPDUs

If the Alternate port link of a switch in the network is broken, the switch will not generate TCN BPDUs

When a port of the switch is selected as the designated port or root port, the switch will immediately send TCNBPDU

4. Two routers are connected together via a LAN to form a VRRP backup group. If the router RTA receives the VRRP protocol message sent by the router RTB, the Priority field Auth Type field value of the message is 2, then

Router RTB enables VRRPV2 protocol

Router RTB enables VRRPV3 protocol

Router RTB is the owner of the VRRPIP address

Router RTB has enabled VRRP simple character authentication

5. The two routers are connected through a LAN to form a VRRP backup group. The configuration on each interface is as follows:

[RTA-GigabitEthernet1/0] display this

ip address 192.168.0.252 255.255.255.0

vrrp vrid 1 virtual-ip 192.168.1.254

vrrp vrid 1 priority 120

[RTB-GigabitEthernet1/0] display this

ip address 192.168.0.253 255.255.255.0

vrrp vrid 1 virtual-ip 192.168.1.254

It can be known from the above information

RTA is the master router of the backup group

RTB is the master router of the backup group

Both RTA and RTB are in VRRP Initialize state

RTA and RTB are both in VRRP Master state

6. The two routers are connected through the LAN to form a VRRP backup group. The VRRP timer configuration on each interface is as follows:

[RTA-GigabitEthernet1/0]vrrp vrid 1 timer advertise 5

[RTB-GigabitEthernet1/0]vrrp vrid 1 timer advertise 5

VRRP backup group 1 is operating normally, RTA is the Master and RTB is the Backup. If the router RTA fails after the device runs for a period of time, the time for the router RTB to change from Backup to Master may be

3 seconds

5 seconds

12 seconds

20 seconds

7. In the PIM-DM networking, regarding the process of SPT formation (without considering the state refresh mechanism), the correct description is:

After the process of flooding and pruning, an SPT between the multicast source and the multicast receiver is formed

The diffusion-pruning process is carried out periodically

The pruned interface no longer sends multicast packets downstream

As long as the network topology and unicast routing information remain unchanged, the formed SPT tree will not change

8. Before configuring Layer 3 multicast, the first configuration that needs to be done is

Enter IGMP view

SB sets the IGMpi protocol version

Configure PIM protocol

Enable multicast globally through the multicastrouting-enable command

9. If you need to implement multicast data forwarding in a three-layer network, at least configure the following protocols or functions

IGMP Snooping function

IGMP protocol

PIM Agreement

BSR configuration

10. The following are functions of the convergence layer (choose one or more)

Possess a large number of interfaces for connecting with end user computers

Access security control

High-speed packet switching

Complex routing strategy

11. The following are core layer functions (choose one or more)

Possess a large number of interfaces for connecting with end user computers

Access security control

High-speed packet switching

Necessary routing strategy

12. The following are the functions of the access layer (choose one or more)

Possess a large number of interfaces for connecting with end user computers

Access security control

High-speed packet switching

Complex routing strategy

13. What is correct about IGMP Snooping?

Both IGMP & IGMP Snooping can be configured in the same VLAN

Port quick leave means that when the switch leaves the IGMP Leave message, it directly deletes the port from the outgoing port list of the corresponding forwarding entry

The unknown multicast group dropping function can be enabled on the switch. When the switch receives unknown multicast data packets, it will only forward to its router port and not broadcast in the VLA

Using the iIGMP Snooping function on the Layer 2 device can establish and maintain multicast forwarding entries at the data link layer, so that multicast data can be forwarded normally at the data link layer

14. In a large local area network, what are the functional layers of the network?

Core layer

Convergence layer

Access layer

Management

15. Regarding RP and BSR, which of the following statements are correct?

RP in PIM-SM can be specified manually or dynamically elected

When configuring RP through dynamic election, you can configure the router that intends to become RP as C-RP

There can only be one BSR in a PIM-SM domain

BSR is responsible for collecting and publishing RP information in PIM-SM domain i

16. In a large local area network, commonly used link backup technologies are

Link aggregation

STP

Smart Link

RRPP

17. The mechanism of multicast group management protocol mainly includes (choose one or more)

Router maintains multicast groups

Queryer election

Member report suppression mechanism

Host joining and leaving the multicast group

18. The following statements about RP selection in PIMSM are correct (choose one or more)

First compare the priority of C-RP, the higher priority wins

Compare the hash value calculated by the Hash function, the larger value wins

Finally compare the C-RP addresses, the one with the larger value wins

Finally compare the C-RP address, the one with the smaller value wins

19. The following statements about PIMSSM are correct

To be compatible with the earlier version of IGMP, the receiver in PIMSSM also uses IGMP V2 to send join messages

PIMSSM can be simply viewed as similar to PIMS

After the host sends a join message, the device sends a (*, G) join message to the multicast source

The multicast packet reaches the receiver along the SPT between the multicast source and the receiver

Compared with PIMSM, PIMSSM does not require RP, which improves message forwarding efficiency

20. The following statements about the PIM joining process are correct:

The multicast joining path of DR in PIMSSM is the optimal forwarding path from source to DR

The multicast joining path of DR in PIMSM is the optimal forwarding path from source to DR

The RP's multicast source joining path in PIMSM is the optimal forwarding path from the source to the RP

The multicast joining path of DR in PIMDM is the optimal forwarding path from source to DR

21. The core goal of highly reliable redundant network design is

Maximize network bandwidth

Maximize network access security

Minimize the existence of a single point of failure in the network

Minimize network management complexity

22. The following technologies belong to the link backup technology in the redundant backup technology.

STP

RRPP

Smart-Link

Dynamic routing

Link aggregation

23. By viewing PIM routing table entries, you can learn about the following:

(S, G) or (*, G) entry interface

Upstream neighbor of (S, G) or (*:G) entry

(S, G) or (*, G) downstream interface of the entry

(S, G) or (*: G) table entry aging time

24. The following technologies belong to the three-layer multicast technology:

PIM

IGMPSnooping

IGMP

MVR

25. Regarding the working mode of VoiceVLAN, the correct statement is

The working mode of VoiceVLAN includes automatic and manual

In automatic mode, the system will recognize the packet sent by the IP Phone, if the match is a voice packet, the port connected to the IP Phone will be added to the Voice VLAN

In manual mode, you need to manually add the IP phone to the Voice VLAN

In manual mode, the system will not issue ACLs to the port

26. Among the following options, the technologies that can be used for identity authentication include

802.1X authentication

PortaL certification

RADIUS

Packet filtering

EAD

27. Regarding the port filtering mode of VoiceVLAN, the correct statement is

The port filtering mode of VoiceVLAN can be divided into security mode and normal mode.

In normal mode, the device will no longer check the MAC address of the message after the port enters the VoiceVLA

In the safe mode, the device will perform a MAC matching check on each packet that will enter the VoiceVLAN for transmission

By default, VoiceVLAN works in normal mode

28. In the network connection as shown in the figure, SWA/SWB/SWC are in the same MSTP domain and configure the same domain configuration

stp region-configuration

region-name h3c

instance 1 vlan 10

instance 2 vlan 20

instance 2 vlan 30

active region-configuration

The ports of the three interconnected links are all Access and belong to the VLAN as shown in the figure. The three switches respectively create the VLAN virtual interface corresponding to the Access link and run OSPF on the virtual interface. The IP address of the VLAN virtual interface is assigned as follows:

SWA: vlan-interface 10 (192.168.10.1); vlan-interface 30 (192.168.30.1)

SWB: vlan-interface 10 (192.168.10.2); vlan-interface 20 (192.168.20.1)

SWC: vlan-interface 20 (192.168.20.2); vlan-interface 30 (192.168.30.2)

When the interconnection ports are all UP and the STP and OSPF calculations are completed, the following descriptions about network connectivity are correct:

Three switches can establish OSPF neighbor relationships in pairs

Two of the three switches cannot establish OSPF neighbor relationships

All interconnection addresses of the three switches are mutually reachable

Among the 6 interconnected addresses, at least two interconnected addresses are mutually unreachable

29. In the network connection as shown in the figure, SWA and SWB enable STP and Loopback-detection at the same time. Please confirm that the port status description of SWA and SWB is correct.

G1/0/1 of SWA may be blocked by STP detecting the existence of a loop

STP detects the existence of a loop between G1/0/2 or G1/0/3 of SWB and blocks one of them

Between G1/0/2 and G1/0/3 of SWB, loopback-detection detects the existence of a loop and blocks one of them

30. In the network connection shown in the figure, SWA and SWB are Layer 3 switches, running STP+VRRP, and after the initial configuration is completed, SWA is the root of STP and Master of VRRP, and SWC is the Layer 2 switch connected to the access terminal , The following description about network link failure is correct

When the link between SWA and SWB is interrupted, the topology of STP will change, and both upstream ports of SWC will become Forwarding

When the link between SWA and SWB is interrupted, the VRRP Master will switch, and SWB will become the new VRRP Master

When the link between SWA and SWC is interrupted, the topology of STP will change, and G1/0/2 of SWC will become Forwarding

After the link between SWA and SWC is interrupted, the VRRP Master will remain unchanged, but the SWC downstream terminal will not communicate with the gateway.

31. In the network connection as shown in the figure, SWA and SWB are Layer 3 switches, running STP+VRRP, and after the initial configuration is completed, SWA is the root of STP and Master SWC of VRRP is the Layer 2 switch, which is connected to the following terminals. The description about the network link failure is correct

When the link between SWB and SWC is interrupted, the port status on the remaining STP links remains unchanged, and Forwarding is still maintained

When the link between SWB and SWC is interrupted, VRRP Master will remain unchanged, and SWC downstream terminals can still communicate normally

When only the link between SWB and SWC is intact in the figure, both SVVA and SWB will become VRRP masters, and the lower end of SWC can communicate with the gateway normally.

When only the link between SWB and SWC is intact in the figure, the VRRP Master will remain unchanged, but the SWC downstream terminal cannot communicate with the gateway

32. The host PCA, PCB and PCC are respectively connected to the Ethernet1/0/1 Ethernet1/0/2 and Ethernet1/0/3 ports of the switch SWA, and their addresses are in the same network segment. Check the VLAN on SWA as follows display:

[SWA]display vlan 10

VLAN ID: 10

VLAN Type: static

Route Interface: not configured

Description: VLAN 0010

Name: VLAN 0010

Tagged Ports: none

Untagged Ports:

Ethernet1/0/1 Ethernet1/0/24

[SWA]display vlan 20

VLAN ID: 20

VLAN Type: static

Route Interface: not configured

Description: VLAN 0020

Name: VLAN 0020

Tagged Ports: none

Untagged Ports:

Ethernet1/0/2Ethernet1/0/24

[SWA]display vlan 30

VLAN ID: 30

VLAN Type: static

Route Interface: not configured

Description: VLAN 0030

Name: VLAN 0030

Tagged Ports: none

Untagged Ports:

Ethernet1/0/1 Ethernet1/0/2 Ethernet1/0/24

It can be judged from the above output information

PCA can communicate with PCB

PCA can communicate with PCC

PCB can communicate with PCC

PCA, PCB and PCC cannot communicate with each other

33. After executing the display interface Ethernet 1/0/2 command on the switch SWA, the output information is as follows:

[SWA]display interface Ethernet 1/0/2

Ethernet1/0/2 current state: UP

PVID: 10

Mdi type: auto

Link delay is 0(sec)

Port link-type: trunk

VLAN passing: 1 (default vlan), 10

VLAN permitted: 1 (default vlan), 2-4094

Trunk port encapsulation: IEEE 802.1q

Port priority: 0

It can be judged from the above output

Port Ethernet1/0/2 only allows data from VLAN 1 and VLAN 10 to pass through

The only VLANs existing on the switch are VLAN1 and VLAN10

Data frames with VLAN1 tags will not be stripped off when they leave port Ethernet1/0/2

Data frames with VLAN20 tags will be discarded when they enter port Ethernet1/0/2

34. The switch SWA and SWB are connected together by two optical fiber Gigabit Ethernet links. The switch SWA has the following interface configuration:

[SWA]interface GigabitEthernet 1/0/1

[SWA-GigabitEthernet1/0/1]gvrp

[SWA-GigabitEthernet1/0/1]port link-type trunk

[SWA-GigabitEthernet1/0/1]port trunk permit vlan 1 10

[SWA]interface GigabitEthernet 1/0/2

[SWA-GigabitEthernet1/0/2]port link-type trunk

[SWA-GigabitEthernet1/0/2]port trunk permit vlan 1 10

It can be seen from the above

GigabitEthernet1/0/1 and GigabitEthe1/0/2 cannot join the same aggregation group

Only by changing the configuration of GigabitEthe1/0/2 to be consistent with GigabitEthe1/0/1, can they join the same aggregation group

If SWA4 is switched to enable MSTP, one of GigabitEthernet 1/0/1 and GigabitEthernet 1/0/2 will be blocked

If MSTP is enabled on the SWA switch, GigabitEthe1/0/1 and GigabitEthe1/0/2 can participate in forwarding

35. Regarding priority mapping and priority trust, there are correct statements

After the packet enters the switch port, it will enter the queue according to the priority of 802.1P by default

After the packet enters the switch port, it will enter the queue according to the priority of DSCP by default

After the packet enters the switch, if you want to queue according to the 802.1P or DSCP value, you must configure the port to trust 802.1P or DSCP

After the message enters the switch port, it will enter the queue according to the priority of the port by default

36. Which of the following elements may the MAC address table entry of the switch contain?

MAC address

Port number

VLANID

Aging time

IP address

37. The connection form of switch SWA, SWB and SWC is as follows:

SWA――SWB――SWC

The three switches are correctly configured with the GVRP protocol to advertise VLAN information to each other. If VLAN 2 is manually created on SWA, the following description is correct

SWA immediately sends the first Join message to SWB, and then waits for the Jointimer time to send the second Join message

SWA waits for the Holdtimer time to send the first Join message to SWB, and then waits for the Jointime time to send the second Join message

After SWB receives the first Join message, Ma I sends the first Join message to SWC, and then waits for Jointime to send the second Join message

After receiving the first Join message, SWB waits for the Holdtimer time to send the first Join message to SWC, and then waits for the Jointimer time to send the second Join message

38. To configure the Ethernet1/0/1 port of the switch SWA as a hybrid port, its PVID is VLAN20, and when sending VLAN20 data frames without tagging, when sending VLAN 10 data frames, then the following configuration Is the process correct (choose one or more)

[SWA]vlan10 [SWA-vlan 10]quit [SWA]vlan 20 [SWA-vlan20]port Ethernet 1/0/1 [SWA-vlan20]quit [SWA]interface Ethernet 1/0/1 [SWA-Ethernet1 /0/1 ]port link-type hybrid [SWA-Ethernet1 /0/1]port hybridvlan 10 tagged

[SWA]vlan10 [SWA-vlan 10]quit [SWA]vlan 20 [SWA-vlan20]quit [SWA]interface Ethernet 1/0/1 [SWA-Ethernet1/0/1]port link-type hybrid [SWA-Ethernet1/0/1]port hybrid pvid vlan 20 [SWA-Ethernet1 /0/1 ]port hybrid vlan 10 tagged

[SWA]vlan10 [SWA-vlan10]quit [SWA]vlan 20 [SWA-vlan20]quit [SWA]interface Ethernet 1/0/1 [SWA-Ethernet1/0/1]port link-type hybrid [SWA-Ethernet1/0/1]port hybrid pvid vlan 20 [SWA-Ethernet1/0/1]port hybrid vlan 10 tagged [SWA-Ethernet1 /0/1 ]port hybrid vlan 20 untagged

[SWA]interfaceEthernet 1/0/1 [SWA-Ethernet1/0/1]port link-type hybrid [SWA-Ethernet1/0/1]port hybrid pvid vlan 20 [SWA-Ethernet1/0/1]port hybrid vlan 10 tagged [SWA-Ethernet1/0/1]port hybrid vlan 20 untagged [SWA-Ethernet1/0/1]quit [SWA]vlan 10 [SWA-vlan10]quit[SWA]vlan 20

None of the above is correct

39. Which of the following aspects should be considered for the security of the campus network?

Effectively identify legal and illegal users

Effective management of network equipment and network topology

Effective access control

Protect the physical circuit

40. The Ethemet1/0/1 port configuration of the switch SWA is as follows:

interface Ethernet 1/0/1

port link-type trunk

port trunk permit vlan 10

port trunk pvid vlan 20

Now you need to modify the Ethernet 1/0/1 port of the switch SWA to a Hybrid port, the PVID is VLAN20, and the data frame of VLAN10 is tagged, then the following configuration process is correct (choose one or more)

[SWA-Ethernet1/0/1]portlink-type access [SWA-Ethernet1/0/1]port access vlan 20 [SWA-Ethernet1/0/1]port link-type hybrid [SWA-Ethernet1/0/1]port hybrid vlan 10 tagged

[SWA-Ethernet1/0/1]portlink-type access [SWA-Ethernet1/0/1]port link-type hybrid [SWA-Ethernet1/0/1]port hybrid pvid vlan 20 [SWA-Ethernet1/0/1]port hybrid vlan 10 tagged

[SWA-Ethernet1/0/1]undoportlink-type [SWA-Ethernet1 /0/1 ]portlink-type hybrid [SWA-Ethernet1/0/1]port hybrid pvid vlan 20 [SWA-Ethernet1/0/1]port hybrid vlan 10 tagged

[SWA-Ethernet1/0/1]port link-type hybrid

None of the above is correct

41. The Ethernets port configuration of the switch SWA is as follows:

interface Ethernet 1/0/1

port link-type trunk

port trunk permit vlan 10

port trunk pvid vlan 20

Now you need to modify the Ethernet1/0/1 port of the switch SWA to a Hybrid port, PVID is VLAN20, and the data frame of VLAN20 is not tagged, and the data frame of VLAN 10 is tagged, Then the following configuration process is correct (choose one or more)

[SWA-Ethernet1/0/1]port link-type access [SWA-Ethernet1/0/1]port access vlan 20 [SWA-Ethernet1/0/1]port link-type hybrid [SWA-Ethernet1/0/1]port hybrid vlan 10 tagged

[SWA-Ethernet1/0/1]portlink-type access [SWA-Ethernet1/0/1]port link-type hybrid [SWA-Ethernet1/0/1]port hybrid pvid vlan 20 [SWA-Ethernet1/0/1]port hybrid vlan 10 tagged

[SWA-Ethernet1/0/1]undoportlink-type [SWA-Ethernet1 /0/1 ]portlink-type hybrid[SWA-Ethernet1/0/1]port hybrid pvid vlan 20 [SWA-Ethernet1/0/1]port hybrid vlan 10 tagged

[SWA-Ethernet1/0/1]port link-type hybrid

None of the above is correct

42. The switch SWA uses the factory default configuration. Now the Ethernet 1/0/1 port of the switch SWA should be configured as a trunk port, the PVID is VLAN20, and VLAN10 is allowed. The following configuration process is correct.

[SWA]vlan10 [SWA-vlan10]quit [SWA]vlan 20 [SWA-vlan20]port Ethernet 1/0/1 [SWA-vlan20]quit [SWA]interface Ethernet 1/0/1 [SWA-Ethernet1/0/1]port link-type trunk [SWA-Ethernet1/0/1]port trunk permit vlan 10

[SWA]vlan10 [SWA-vlan10]quit [SWA]vlan 20 [SWA-vlan20]quit [SWA]interface Ethernet 1/0/1 [SWA-Ethernet1/0/1]port access vlan 20 [SWA-Ethernet1/0/1]port link-type trunk [SWA-Ethernet1/0/1]port trunk permit vlan 10

[SWA]vlan10 [SWA-vlan10]quit [SWA]vian 20 [SWA-vlan20]quit [SWA]interface Ethernet 1/0/1 [SWA-Ethernet1/0/1]port link-type trunk [SWA-Ethernet1/0/1]port trunk pvid vlan 20 [SWA-Ethernet1 /0/1 ]port trunk permit vlan 10

[SWA]interfaceEthernet 1/0/1 [SWA-Ethernet1/0/1]port link-type trunk [SWA-Ethernet1/0/1]port trunk pvid vlan 20 [SWA-Ethernet1/0/1]port trunk permit vlan 10 [SWA-Ethernet1/0/1]quit [SWA]vlan 10 [SWA-vlan10]quit[SWA]vlan 20

43. When implementing network security management measures in a campus network, which of the following are network access control technologies or measures deployed for illegal access to network resources

Add firewall

Deploy endpoint access defense

Portal authentication

Add IAS equipment (IllegalAccess System)

44. In the switching network as shown in the figure, all three switches only have the default VLAN1, the interconnection ports of the three switches are trunks, and all VLANs are allowed to pass, and the three switches have the global and port GVRP functions enabled. VLAN10 is created on the switch SVVA, and VLAN20 is created on the switch SWC. Check the status information of each Trunk port on the three switches. The correct one is displayed below

[SWA]display interface Ethernet 1/0/1 Ethernet1/0/1 current state: U

..... PVID: 1 Mdi type: auto Link delay is 0(sec) Port link-type: trunk VLAN passing: 1 (default vlan), 10,20 VLAN permitted: 1 (default vlan), 2-4094 Trunk port encapsulation: IEEE 802.1q

[SWB]display interface Ethernet 1/0/1 Ethernet1/0/1 current state: U

..... PVID: 1 Mdi type: auto Link delay is 0(sec) Port link-type: trunk VLAN passing: 1 (default vlan), 10,20 VLAN permitted: 1 (default vlan), 2-4094 Trunk port encapsulation: IEEE 802.1q

[SWB]display interface Ethernet 1/0/2 Ethernet1/0/2 current state: U

..... PVID: 1 Mdi type: auto Link delay is 0(sec) Port link-type: trunk VLAN passing: 1 (default vlan), 10,20 VLAN permitted: 1 (default vlan), 2-4094 Trunk port encapsulation: IEEE 802.1q

[SWC]display interface Ethernet 1/0/1 Ethernet1/0/1 current state: U

..... PVID: 1 Mdi type: auto Link delay is 0(sec) Port link-type: trunk VLAN passing: 1 (default vlan), 10,20 VLAN permitted: 1 (default vlan), 2-4094 Trunk port encapsulation: IEEE 802.1q

45. In the switching network as shown in the figure, all three switches only have the default VLAN 1, the interconnection ports of the three switches are Trunk, and all VLANs are allowed to pass, and the three switches have the global and port GVRP function enabled. VLAN 10 is created on the switch SVVA, VLAN 20 is created on the switch SWC, check the status information of each Trunk port on the three switches, the correct one is displayed below (choose one or more)

[SWA]display interface Ethernet 1/0/1 Ethernetl/0/1 current state: U

..... PVID: 1 Mdi type: auto Link delay is 0(sec) Port link-type: trunk VLAN passing: 1 (default vlan), 10 VLAN permitted: 1 (default vlan), 2-4094 Trunk port encapsulation: IEEE 802.1q

[SWB]display interface Ethernet 1/0/1 Ethernet1/0/1 current state: U

..... PVID: 1 Mdi type: auto Link delay is 0(sec) Port link-type: trunk VLAN passing: 1 (default vlan), 10 VLAN permitted: 1 (default vlan), 2-4094 Trunk port encapsulation: IEEE 802.1q

[SWB]display interface Ethernet 1/0/2 Ethernet1/0/2 current state: U

..... PVID: 1 Mdi type: auto Link delay is 0(sec) Port link-type: trunk VLAN passing: 1 (default vlan), 10 VLAN permitted: 1 (default vlan), 2-4094 Trunk port encapsulation: IEEE 802.1q

[SWC]display interface Ethernet 1/0/1 Ethernet1/0/1 current state: U

..... PVID: 1 Mdi type: auto Link delay is 0(sec) Port link-type: trunk VLAN passing: 1 (default vlan), 10 VLAN permitted: 1 (default vlan), 2-4094 Trunk port encapsulation: IEEE 802.1q

46. In the networking model shown in the figure, after the configuration is completed, it is found that the user authentication fails, then the possible cause of the failure is

The username is not configured on the RADIUSServer

No default domain is specified on RADIUSClient

The message shared key between RADIUS Server and RADIUs Client is inconsistent

The network cable between RADIUS Server and RADIUs Client is not connected

47. GVRP is enabled on the switch SWA, and the Hold timer value is set to 100 centiseconds. Now you need to modify the value of other timers. The following configuration is correct

[SWA-Ethernet1/0/1]garptimer join 50

[SWA-Ethernet1/0/1]garp timer join 200

[SWA-Ethernet1/0/1]garptimer leave 400

[SWA]garp timer leaveall 415

48. If port-based VLAN, MAC address-based VLAN, protocol-based VLAN, and IP subnet-based VLAN are simultaneously enabled on a port of the switch, by default, VLANs will be matched in order

Port VLAN MACVLAN Protocol VLAN IP Subnet VLAN

Port VLAN IP Subnet VLAN Port VLAN MAC VLAN

MACVLAN Port VLAN Protocol VLAN Subnet VLAN

MACVLAN subnet VLAN protocol VLAN port VLAN

49. Which of the following messages are TACACS+ authentication messages

start

Request

Rsponse

Continue

50. Which of the following methods of dividing VLANs has the advantage that when the user's physical location moves, that is, when changing from one switch to another, VLAN does not need to be reconfigured-(choose one or more)

Port-based VLAN

VLAN based on MAC address

Protocol-based VLAN

VLAN based on IP subnet

51. Regarding root bridge protection, the following statements are correct

When root bridge protection is not configured, the root bridge will lose its status as the root bridge if it receives a higher priority BPDU

After the root bridge protection is configured, the ports receive high-priority BPDUs, and the status of these ports will be set to Listening and no longer forward packets

The port will undergo a transition from the Listening state to the Fonwarding state. During this period, if the port does not receive a better BPDU, the port will resume its original forwarding state.

Root bridge protection is configured in port view

52. In the networking model shown in the figure, if Accoing is received on RADIUsClient, the following statement may be correct.

The message is sent by Host

The message is sent by RADIUS Server

The message is a stop-accounting response message

This message is a start-accounting response message

53. The host PCA, PCB and PCC are respectively connected to the GigabitEthernet1/0/1 GigabitEthernet1/0/2 and GigabitEthernet1/0/3 ports of the switch SWA belong to VLAN2, VLAN3 and VLAN10, and the host ife addresses are in the same network segment. PCA Both PCC and PCB can access PCC, but PCA and PCB cannot communicate with each other. In the configuration process of SWA, which of the following configurations should be included ¬

[SWA]vlan2 [SWA-vlan2]port GigabitEthernet 1/0/1

[SWA]vlan3 [SWA-vlan3]port GigabitEthernet 1/0/2

[SWA]vlan10 [SWA-vlan 10]isolate-user-vlan enable

[SWA]isolate-user-vlan 10 secondary 2 3 [SWA]vian10 [SWA-vlan 10]port GigabitEthernet 1/0/3

54. The ports Ethemet1/0/1, Ethernet1/0/2 and Ethernet1/0/3 of the switch SWA are Access, Trunk and Hybrid ports respectively, and the PVID is VLAN10. After executing the command undo vlan10 on SWA, check the configuration of each port Can you see which of the following-configuration

interfaceEthernet1/0/1

interfaceEthernet1/0/1 port access vlan 10

interface Ethernet 1/0/2 port link-type trunk port trunk permit vlan 1

interface Ethernet 1/0/2 port link-type trunk port trunk permit vlan 1 port trunk pvid vlan 10

interfaceEthernet1/0/3 port link-type hybrid port hybrid vlan 1 untagged

interfaceEthernet1/0/3 port link-type hybrid port hybrid vlan 1 untagged port hybrid pvid vlan 10

All the above configurations are wrong

55. In the switching network as shown in the figure, set VLAN10 to Isolate-user-vlan VLAN2 and VLAN3 to the Secondary VLAN of VLAN 10 on the switch SWA; create VLAN2? VLAN20 on the switch SWB, and set VLAN20 to Isolate-user-vlan, The Secondary VLA with VLAN4 being VLAN20 can be judged after setting the IP address of each device as shown in the figure

PCA can communicate with PCB

PCA can communicate with PCC

PCA can communicate with SWA

PCA can communicate with SWB

SWA can communicate with SWB

56. When using publickey authentication for SSH users, which descriptions are correct in terms of configuration keys?

Need to configure the client's RSA host private key on the server side

The client is required to specify the RSA private key corresponding to the host public key for the SSH user

You can use copy and paste to configure the client's host public key to the server

The host private key of the client cannot be configured to the server by copy and paste

57. In the switching network as shown in the figure, VLAN10 is set as Isolate-user-vlan on the switch SWA, VLAN2 and VLAN3 are the Secondary VLAN of VLAN 10; VLAN2? VLAN20 is created on the switch SWB, and VLAN20 is set as Isolate-user-vlan , VLAN4 is the Secondary VLAN of VLAN20. After setting the IP address of each device, check the MAC address table on SWA, it will show that the PCB belongs to (choose one or more)

VLAN 1

VLAN2

VLAN3

VLAN4

VLAN 10

VLAN20

58. The following information is the snmp-related configuration on a H3C network device:

snmp-agent

snmp-agent local-engineid 800007DB00E0FC79887C6877

snmp-agent community read public

snmp-agent community write private

snmp-agent sys-info version all

Which description of the result of snmp access to this device is correct?

You can successfully access and set up this device through snmpv1

You can successfully access and set up this device through snmpv2c

You can successfully access and set this device through snmpV3

No matter which version is adopted, this device cannot be accessed and set up

59. In the switching network as shown in the figure, VLAN10 is set as Isolate-user-vlan on switch SWA, VLAN2 and VLAN3 are set as Secondary VLAN of VLAN 10; VLAN2-VLAN20 is created on switch SWB, and VLAN20 is set as Isolate-user-vlan , VLAN4 is the Secondary VLAN of VLAN20. After setting the IP address of each device as shown in the figure, the local proxy ARP function is enabled on both SWA and SWB. Initially, the switch and pc did not learn their corresponding ARP entries. In the process of PCA ping PCB, PCA will send an ARP request. After receiving the ARP request message, the PCA will send the destination MAC response. The destination MAC address is

FFF

FFFF

0011.1111.1111

00E0.FC00.0010

00E0.FC00.0020

60. In the switching network as shown in the figure, VLAN10 is set as Isolate-user-vlan on switch SWA, VLAN2 and VLAN3 are set as Secondary VLAN of VLAN 10; VLAN2? VLAN20 is created on switch SWB, and VLAN20 is set as Isolate-user-vlan , VLAN4 is VLAN20 Secondary VLA after setting the IP address of each device as shown in the figure, if the local proxy ARP function is enabled on both SWA and SWB, and both SWA and SWB are allowed to send ICMP packets, then on PCA Execute the command tracert 10.1.1.2, the PCA will show that it needs to go through a jump to reach the PCB (please fill in the Arabic numbers)

61. In the switching network as shown in the figure, VLAN10 is set as Isolate-user-vlan on the switch SWA, VLAN2 and VLAN3 are set as the Secondary VLAN of VLAN 10; VLAN2? VLAN20 is created on the switch SWB, and VLAN20 is set as Isolate-user-vlan , VLAN4 is VLAN20 Secondary VLA after setting the IP address of each device as shown in the figure, if the local ARP proxy function is enabled on both SWA and SWB, and both SWA and SWB are allowed to send ICMP packets, then on PCA Run the tracert 10.1.1.2 command, the PCA shows that the destination IP address reached by the first hop is

62. In the switching network shown in the figure, VLAN10 is set as Isolate-user-vlan on the switch SWA, VLAN2 and VLAN3 are set as the Secondary VLAN of VLAN 10; VLAN2? VLAN20 is created on the switch SWB, and VLAN20 is set as Isolate-user-vlan , VLAN4 is VLAN20 Secondary VLA after setting the IP address of each device as shown in the figure, the local proxy ARP function is enabled on both SWA and SWB. At first, the switch and pc did not learn their corresponding ARP entries in PCA. During the process of pinging PCB, PCA will send an ARP request. The source MAC address of the ARP request packet forwarded by the switch to PCB is

0000.0000.0000

0011.1111.1111

00E0.FC00.0010

00E0.FC00.0020

63. In the switching network as shown in the figure, VLAN10 is set as Isolate-user-vlan on switch SWA, VLAN2 and VLAN3 are set as Secondary VLAN of VLAN 10; VLAN2-VLAN20 is created on switch SWB, and VLAN20 is set as Isolate-user-vlan , VLAN4 is the Secondary VLAN of VLAN20. After setting the IP address of each device as shown in the figure, the following statement is correct (choose one or more)

The packet of PCA enters from the GigabitEther1/0/1 port of SWA, and does not carry the VLAN tag after exiting from the GigabitEther1/0/3 port

The PCA packet comes out of the GigabitEthem1/0/3 port of SWA and enters the GigabitEthe1/0/3 port of SWB, and the VLAN Tag carried is VLAN2

When SWB accesses PCA, the VLAN tag carried by GigabitEthem1/0/4 of SWB is VLAN 1

SWB packets enter from SWA's GigabitEthem1/0/3 port, and after exiting from GigabitEthem1/0/1 port, the VLANTag carried is VLAN2

64. Among the SNMPv1 messages, the messages sent by the Agent to the NMS include:

GetRequest

GetNextRequest

SetRequest

GetResponse

Trap

65. In the switching network as shown in the figure, set VLAN10 as Isolate-user-vlan VLAN2 and VLAN3 as the Secondary VLAN of VLAN10 on the switch SWA. VLAN10 virtual interface link layer UP on the following switch SWA? (Select one or more )

GigabitEthernet1/0/1 port is up

GigabitEthernet1/0/2 port UP

GigabitEthernet1/0/3 port is up

GigabitEthernet1/0/1, GigabitEthernet1/0/2 and GigabitEthem1/0/3 are all up

66. The host PCA, PCB and PCC are respectively connected to the GigabitEthernet1/0/1 port of the switch SWA □ UP, Ethernet1/0/2 and Ethernet1/0/3 ports, and their addresses are in the same network segment, i exchange & SWA are configured

[SWA]vlan 10

[SWA-vlan10]port ethernet 1/0/1

[SWA-vlan10]quit

[SWA]vlan 20

[SWA-vlan20]port ethernet 1/0/2

[SWA-vlan20]quit

[SWA]vlan 30

[SWA-vlan30]port ethernet 1/0/3

[SWA-vlan30]quit

[SWA]interface ethernet 1/0/1

[SWA-Ethernet1/0/1]port link-type hybrid

[SWA-Ethernet1 /0/1] port hybrid vlan 10 30 untagged

[SWA-Ethernet1/0/1]quit

[SWA]interface ethernet 1/0/2

[SWA-Ethernet1/0/2]port link-type hybrid

[SWA-Ethernet1 /0/2]port hybrid vlan 20 30 untagged

[SWA-Ethernet1/0/2]quit

[SWA]interface ethernet 1/0/3

[SWA-Ethernet1/0/3]port link-type hybrid

[SWA-Ethernet1 /0/3]port hybrid vlan 10 20 30 untagged

-Can judge __ (choose one or more) based on the above information

Intercommunication between PCA and PCB

Intercommunication between PCA and PCC

PCB and PCC can communicate directly

Two PCs cannot communicate with each other

The configuration command is incorrect

67. To query the CPU utilization of a certain device through SNMP, before executing the query action, which information should be mastered by the network management application

SNMP community attributes of the device

The management IP address of the device

OID of device CPU utilization

Instance ID of device CPU utilization

68. Which of the following descriptions about remote port mirroring are correct?

Remote port mirroring must include the mirror source and destination switch

The reflection port of remote port mirroring is essential

The ProbeVLAN of remote port mirroring should prohibit MAC address learning

69. In NTP client and server mode, which of the following NTP authentication combinations can be successfully synchronized?

Both NTP client and server enable authentication

Both NTP client and server are not enabled for authentication

Verification is enabled on the NTP client but not on the server

Verification is not enabled on the NTP client, and verification is enabled on the server

70. In the switching network as shown in the figure, VLAN10 is set as Super VLAN on switch SWA, VLAN2 and VLAN3 are Sub VLAN of VLAN10, port Ethernet1/0/3 is Trunk port, PVID is VLAN1, allowing all VLANs to pass through; Create VLAN2~VLAN20 on SWB, port Ethernet1/0/4 as Trunk port, PVID is VLAN1, allow all VLANs by setting the IP address of each device as shown in the figure, you can judge_

PCA can communicate with PCB

PCA can communicate with PCC

PCA can communicate with SWA

PCA can communicate with SWB

None of the above answers

71. In the switching network as shown in the figure, VLAN10 is set as Super VLAN on the switch SWA, VLAN2 and VLAN3 are Sub VLANs of VLAN10, port Ethernet1/0/3 is Trunk port, PVID is VLAN1, allowing all VLANs to pass through; Create VLAN2~VLAN20 on SWB, port Ethernet1/0/4 as Trunk port, PVID is VLAN1, allowing all VLANs to be judged by setting the IP address of each device as shown in the figure (choose one or more)

SWB can communicate with PCA

SWB can communicate with PCB

SWB can communicate with PCC

SWB can communicate with SWA

None of the above answers

72. In the switching network as shown in the figure, VLAN10 is set as Super VLAN on switch SWA, VLAN2 and VLAN3 are Sub VLAN of VLAN10, port Ethernet1/0/3 is Trunk port, PVID is VLAN1, allowing all VLANs to pass through; Create VLAN2~VLAN20 on SWB, port Ethernet1/0/4 as Trunk port, PVID is VLAN1, allowing all VLANs to set the IP address of each device as shown in the figure, check the MAC address table on SWA, you can judge PCC belongs to

VLAN 1

VLAN 2

VLAN 3

VLAN 10

73. In the switching network as shown in the figure, VLAN10 is set as Super VLAN on the switch SWA, VLAN2 and VLAN3 are Sub VLANs of VLAN10, port Ethernet1/0/3 is Trunk port, PVID is VLAN1, allowing all VLANs to pass through; Create VLAN2~VLAN20 on SWB, port Ethernet1/0/4 as Trunk port, PVID is VLAN1, allow all VLANs by setting the IP address of each device as shown in the figure, you can judge _ the following statement is correct

PCA packets enter from SWA's Ethernet1/0/1 port, and come out from Ethemet1/0/3 port without tag

PCA packets enter from the SWA Ethernet1/0/1 port, and come out from Ethemet1/0/3 port with VLAN Tag VLAN 1

The PCA message enters from the Ethernet1/0/1 port of SWA, and the VLANTag that comes out from the Ethernet1/0/3 port is VLAN2

The PCA message enters from the Ethernet1/0/1 port of SWA, and the VLANTag that comes out from the Ethernet1/0/3 port is VLAN 10

74. In the switching network as shown in the figure, VLAN10 is set as SuperVLAN on the switch SWA, and VLAN2 and VLAN3 are Sub VLANs of VLAN10. If PCA and PCB can communicate with each other, which of the following items should be included in the configuration on the switch SWA ¬

[SWA]vlan2 [SWA-vlan2]port Ethernet 1/0/1

[SWA]vlan3 [SWA-vlan3]port Ethernet 1/0/2

[SWA]vlan10 [SWA-vlan 10]super vlan

[SWA]vlan 10 [SWA-vlan 10]supervlan

[SWA]vlan10 [SWA-vlan 10]subvlan 2 3

[SWA]supervlan10 subvlan 2 3

[SWA]vlan10 [SWA-vlan10] local-proxy-arp enable [SWA] interface Vlan-interface 10 [SWA-Vlan-interface10]ip address 10.1.1.4 255.255.255.0

[SWA]interfaceVlan-interface 10 [SWA-Vlan-interface10]ip address 10.1.1.4 255.255.255.0 [SWA-Vlan-interface10]local-proxy-arp enable

75. In the switching network as shown in the figure, VLAN10 is set as SuperVLAN on the switch SWA, and VLAN2 and VLAN3 are Sub VLANs of VLAN10. The PCA and PCB are required to communicate with each other. After the switch SWA configuration is completed, the PCA can ping the PCB. After that, regarding the ARP entries on the PCA, PCB and switch SWA, the correct description below is _ (choose one or more)

The ARP entry learned on PCA is: Internet AddressPhysical AddressType 10.1.1.2 0022-2222-2222 dynamic

The ARP table entry learned on the PCB is: Internet AddressPhysical AddressType 10.1.1.1 00E0-FC0A-0010 dynamic

The ARP i item learned on SWA is: IP Address MAC Address VLAN ID InterfaceAging Type 10.1.1.1 0011-1111-11112Eth1/0/1 20D 10.1.1.2 0022-2222-22223Eth 1/0/2 20D

None of the above is correct

76. In the switching network as shown in the figure, VLAN10 is set as Super VLAN on switch SWA, VLAN2 and VLAN3 are Sub VLAN of VLAN10, port Ethernet1/0/3 is Trunk port, PVID is VLAN1, allowing all VLANs to pass through; Create VLAN2~VLAN20 on SWB, port Ethernet1/0/4 as Trunk port, PVID is VLAN1, allowing all VLANs to view Ethernet 1/0/3 port information on SWA, the correct one is displayed below

[SWA]display interface Ethernet 1/0/3 Ethernet1/0/3 current state: U

..... PVID: 1 Mdi type: auto Link delay is 0(sec) Port link-type: trunk VLAN passing: 1 (default vlan), 2-3,10 VLAN permitted: 1 (default vlan), 2-4094 Trunk port encapsulation: IEEE 802.1q

[SWA]display interface Ethernet 1/0/3 Ethernet1/0/3 current state: U

..... PVID: 1 Mdi type: auto Link delay is 0(sec) Port link-type: trunk VLAN passing: 1 (default vlan), 2-3 VLAN permitted: 1 (default vlan), 2-9, 11-4094 Trunk port encapsulation: IEEE 802.1q

[SWA]display interface Ethernet 1/0/3 Ethernet1/0/3 current state: U

..... PVID: 1 Mdi type: auto Link delay is 0(sec) Port link-type: trunk VLAN passing: 1 (default vlan), 2 VLAN permitted: 1 (default vlan), 2-9, 11-4094 Trunk port encapsulation: IEEE 802.1q

[SWA]display interface Ethernet 1/0/3 Ethernet1/0/3 current state: U

..... PVID: 1 Mdi type: auto Link delay is 0(sec) Port link-type: trunk VLAN passing: 1 (default vlan), 2 VLAN permitted: 1 (default vlan), 2-4094 Trunk port encapsulation: IEEE 802.1q

77. Regarding the description of Isolate-user-vlan technology and Super VLAN technology, the following is correct

Isolate-user-vlan is a Layer 2 VLAN technology, so switches that support isolate-user-vlan technology are Layer 2 switches

SuperVLAN technology is also called VLAN aggregation: the main purpose is to solve the waste of IP addresses or insufficient number of VLAN interfaces

SuperVLAN is a three-layer VLAN technology, so all switches that support Super VLAN technology are three-layer switches

78. After executing the displayinterface Ethernet 1/0/1 command on the switch SWA, the output information is as follows:

[SWA]display interface Ethernet 1/0/1

Ethernet1/0/1 current state: UP

PVID: 10

Mdi type: auto

Link delay is 0(sec)

Port link-type: trunk

VLAN passing: 1 (default vlan), 10

VLAN permitted: 1 (default vlan), 2-4094

Trunk port encapsulation: IEEE 802.1q

Port priority: 0

It can be judged from the above output

Port Ethemet1/OM is a trunk port, which only allows data from VLAN 1 and VLAN 10 to pass through

Data frames without VLAN tags will be tagged with VLAN1 when they enter port Ethernet1/0/1

Data reconnaissance with VLAN1 tag will not be stripped when it leaves port Ethemet1/0/1

Port Ethemet1/0/1 is a trunk port, allowing data frames of any VLAN to pass through

79. Regarding the configuration of Isolate-user-vlan and Super VLAN, the following description is correct

After the local proxy ARP function is enabled on the Isolate-user-vlan interface, the intercommunication of hosts in different Secondary VLANs can be realized

After enabling the local proxy ARP function on the SuperVLAN interface, the i-machines in different SubVLANs can communicate with each other

After establishing the mapping relationship between Isolate-user-vlan and Secondary VLAN, the system will prohibit the operations of adding/deleting ports and deleting VLANs to the Secondary VLAN

After the SuperVLAN and Sub VLAN mapping relationship is established, the system will prohibit the operations of adding/deleting ports and deleting VLANs to the Sub VLAN

80. Regarding the relationship between SuperVLAN and Sub VLAN, the following description is correct

SuperVLAN is equivalent to aggregating Sub VLANs so that all Sub VLANs share the same Layer 3 interface

SuperVLAN only establishes Layer 3 interfaces, responsible for Layer 3 forwarding of Sub VLAN

Sub VLAN only contains physical ports, and the internal host uses the address of the Super VLAN interface as the gateway

Although physical ports cannot be included in SuperVLAN configuration, after the mapping relationship between Super VLAN and Sub VLAN is established, the physical ports included in SubVLAN belong to Super VLAN

81. What is correct about the interoperability between Sub VLANs in SuperVLAN technology?

Host IP addresses in different SubVLANs belong to the same network segment, and they can communicate directly with each other through Layer 2 forwarding

Host IP addresses in different SubVLANs belong to the same network segment, but due to the isolation effect of Sub VLANs, it is impossible to achieve intercommunication between Sub VLANs.

The hosts in different SubVLANs are isolated at the second layer, and the third layer can communicate with each other through the ordinary proxy ARP technology of the Super VLAN interface

Layer 2 isolation between hosts in different SubVLANs, Layer 3 can communicate with each other through the local proxy ARP technology of the Super VLAN interface

82. For the following configuration commands:

[H3C] ntp-service refclock-master 127.127.1.1 6

Understanding, which is correct

This command can be successfully configured on all H3C series switches

This command configures the local clock as the reference clock of the system

The device successfully configured with this command has a clock accuracy of 6 in stratum

The device successfully configured with this command can act as a clock server to provide external clock synchronization services

83. The configuration command to set the current VLAN type to SuperVLAN on H3C series switches is

84. The host PCA, PCB and PCC are respectively connected to the GigabitEthernet1/0/1 GigabitEthernet1/0/2 and GigabitEthernet1/0/3 ports of the switch SWA, and the host addresses are in the same network segment. If you want to realize that both PCA and PCB can access PCC , But PCA and PCB are isolated from each other. Which of the following technologies or methods can meet customer needs

Port isolation technology

Use port Hybrid attributes

Isolate-user-vlan technology

SuperVLAN technology

85. The configuration command to enable the global GVRP function on H3C series switches is

GVRP

86. The configuration command to enable the QinQ function of the Ethernet port on the H3C series switch is

qinq enable

87. Before configuring the bpdu-tunnddotlq stp command on the port where the QinQ function of the H3C series switch is enabled, the command that must be configured on this port is

stp disable

88. In the network shown in the figure, the switch SWA is a two-layer switch, and the router RTA is the gateway of each PC. The following configuration is made on the router RTA:

[RTA]interface Ethernet 0/0.1

[RTA-Ethernet0/0.1]ip address 10.10.10.1 255.255.255.0

[RTA-EthernetO/0.1 ]vlan-type dotlq vid 1

[RTA-Ethernet0/0.1 Jinterface ethernet 0/0.2

[RTA-Ethernet0/0.2]ip address 20.20.20.1 255.255.255.0

[RTA-Ethernet0/0.2]vlan-type dotlq vid 2

[RTA-Ethernet0/0.2]interface ethernet 0/0.3

[RTA-Ethernet0/0.3]ip address 30.30.30.1 255.255.255.0

[RTA-Ethernet0/0.3]vlan-type dotlq vid 3

After completing the phase configuration on the switch SWA, PCA, PCB and PCC can all ping their own gateway. The following is correct about the switch SWA port Ethernet1/0/4 (choose one or more)

interfaceEthernet1/0/4 port link-mode bridge port link-type trunk port trunk permit vlan all

interfaceEthernet1/0/4 port link-mode bridge port link-type trunk port trunk permit vlan all port trunk pvid vlan 2

interface Ethernet1/0/4 port link-mode bridge port link-type trunk port trunk permit vlan all port trunk pvid vlan 3

interface Ethernet 1/0/4 port link-mode bridge port link-type trunk port trunk permit vlan all port trunk pvid vlan 10

89. In the network as shown in the figure, after completing the corresponding configuration on the switch SWA, when the switch SWA receives the data frame from the PCA to access the PCB, it will judge whether to check the MAC address table or the routing table according to it.

VLAN attributes of data frames

Destination MAC address of the data frame

Source MAC address of the data frame

The source IP address of the data frame

90. In the network shown in the figure, the corresponding configuration is completed on the switch SWA, and the switch SWA and each PC have learned that the corresponding ARPPCA sent an ICMP request message when accessing the PCB, and the destination MAC address of the message is _

FFF

FFFF

MAC-10

MAC-20

MAC-B

91. In the network as shown in the figure, the corresponding configuration is completed on the switch SWA, and the switch SWA and each PC have learned the corresponding ARPPCA to access the PCB and send the ICMP request message, and the switch SWA forwards this MAC address to the PCB as

MAC_A

MAC10

MAC20

0000.0000.0000

92. Which statement is correct about the communication between switch VLANs?

After the switch is divided into VLANs, only the hosts in the VLAN can communicate, and there is no way for the hosts between VLANs to communicate

After the two-layer switch divides VLANs, hosts in different VLANs can use routers to realize communication. The method is that the router has a physical interface and a physical connection to each VLA

After the Layer 2 switch is divided into VLANs, hosts in different VLANs can communicate with the router by using an interface to connect to the trunk port of the switch, and the router must support the 802.1 Q protocol

After the three-layer switch divides VLANs, hosts in different VLANs can communicate. The method is that the three-layer switch creates a virtual three-layer VLAN interface for each VLAN, and the VLAN interface needs to be configured with a corresponding IP address, which is used as the respective VLAN Gateway of the host

93. The following statement about the three-layer switch is correct.

The three-layer switch actually combines part of the functions of the two-layer switch and router, which improves the network integration and enhances the forwarding performance

The three-layer switch functionally realizes the division of VLANs, the two-layer switching within the VLAN and the functions of inter-VLAN routing

The Layer 3 switch contains two parts: a Layer 2 VLAN forwarding engine and a Layer 3 forwarding engine

The three-layer forwarding engine of the three-layer switch is equivalent to the function of the router in the traditional networking, using hardware ASIC technology to realize the three-layer routing and forwarding across network segments

94. The Layer 3 switch receives the data frame and performs the Layer 2/Layer 3 forwarding judgment

If the destination MAC address of the data frame is the MAC address of the VLAN interface of the switch, the switch will perform Layer 3 forwarding

If the destination MAC address of the data frame is not the MAC address of the VLAN interface of the switch, the switch will look up the MAC address table and do Layer 2 forwarding in the VLAN

If the destination IP address and source IP address of the data frame are in the same network segment, the switch will do Layer 2 forwarding

If the destination IP address and source IP address of the data frame are not in the same network segment, the switch will look up the routing table for Layer 3 forwarding

95. Which of the following descriptions about exact matching switches and longest matching switches is correct?

The exact matching switch searches the routing table through software for packet-by-packet forwarding

The exact matching switch is to complete the forwarding of subsequent packets through hardware after the first packet is searched and processed by software, but it cannot cope with the impact of worms on routing

The longest matching switch uses software to search the routing table for

The longest matching switch replaces the software routing table with hardware entries, and follows the longest matching principle when searching. In the case of extremely serious network worms, it can still guarantee the wire-speed forwarding of IP packets

96. Which of the following descriptions about the IP address of the VLAN interface of the H3C Layer 3 switch is correct?

As long as an IP address is configured for a VLAN interface, the switch has a three-layer routing and forwarding function

Only when two or more VLAN interfaces are configured with IP addresses can the switch have the function of Layer 3 routing and forwarding

When configuring the primary IP address for the VLAN interface, if there is already a primary IP address on the interface, you must delete the original primary IP address to configure a new primary IP address

You must delete the secondary IP address before deleting the primary IP address of the VLAN interface

97. Which of the following descriptions about H3C switch static routing is correct (choose one or more)

Layer 2 switches do not support routing and forwarding, so Layer 2 switches cannot be configured with static routes

Layer 2 switches can be configured with static routes

Only Layer 3 switches can configure static routing

When the switch configures a static route, you can directly specify the outgoing interface without specifying the next hop

98. After executing the displayinterface Ethernet 1/0/1 command on the switch SWA, the output information is as follows:

[SWA]display interface Ethernet 1/0/1

Ethernetl/0/1 current state: UP

PVID: 10

Mdi type: auto

Link delay is 0(sec)

Port link-type: trunk

VLAN passing: 1 (default vlan), 10

VLAN permitted: 1 (default vlan), 2-4094

Trunk port encapsulation: IEEE 802.1q

Port priority: 0

It can be judged from the above output

Port Ethernet1/0/1 is a Trunk port, allowing all VLAN data to pass through

Data frames with VLAN1 tags will be stripped of tags when they leave port Ethernet1/0/1

Data frames with VLAN20 tags can be forwarded from port Ethernet1/0/1

Data frames with VLAN10 tags will not be discarded when entering port Ethernet1/0/1

99. After executing the display interface Ethernet 1/0/1 command on the switch SWA, the output information is as follows:

[SWA]display interface Ethernet 1/0/1

Ethernet1/0/1 current state: UP

PVID: 10

Mdi type: auto

Link delay is 0(sec)

Port link-type: trunk

VLAN passing: 1 (default vlan), 10

VLAN permitted: 1 (default vlan), 2-4094

Trunk port encapsulation: IEEE 802.1q

Port priority: 0

It can be judged from the above output

Port Ethernet1/0 is a Trunk port, which only allows data frames of VLAN 10 to pass through

Data frames without VLAN tags will be tagged with VLAN10 when they enter the port Ethernet1/0/1

Data frames with VLAN1 tags will not be discarded when they enter Ethernet1/0/1

Data frames with VLAN10 tags will not be stripped off when Ethernet1/0/1

100. After executing the display interface Ethernet 1/0/1 command on the switch SWA, the output information is as follows:

[SWA]display interface Ethernet 1/0/1

Ethernetl/0/1 current state: UP

PVID: 10

Mdi type: auto

Link delay is 0(sec)

Port link-type: trunk

VLAN passing: 1 (default vlan), 10

VLAN permitted: 1 (default vlan), 2-4094

Trunk port encapsulation: IEEE 802.1q

Port priority: 0

It can be judged from the above output

Data frames with VLAN10 tags will be stripped of tags when they leave port Ethemet1/0/1

Data frames with VLAN20 tags cannot be forwarded from port Ethemet1/0/1

Data with VLAN1 tags will be discarded when entering port Ethemet1/0/1

Data frames with VLAN10 tags will be discarded when they enter the port Ethernet1/0/1

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