Juniper JN0-348 Enterprise Routing and Switching, Specialist (JNCIS-ENT) Exam Questions

1. Which two statements describe aggregate routes? (Choose two.)

2. You are configuring a new BGP service to your service provider. You want to ensure that BGP is fully established and has all the routes in the route table before allowing traffic to transit the router.

Which feature achieves this requirement?

3. Which LSA type describes the router ID of ASBR routers located in remote areas?

4. Which two statements are true about Virtual Chassis? (Choose two.)

5. Click the Exhibit button.

You are monitoring your IS-IS router and issue the command shown in the exhibit.

Which two statements are true in this scenario? (Choose two.)

6. Click the Exhibit button.

You created a policy to reject all incoming routes from peer 2.2.2.2. You notice that despite applying the policy, you are still receiving routes from this peer.

Referring to the exhibit, why are you still receiving the routes?

7. A customer discovered that a significant outage was caused by an unauthorized Ethernet switching device attached to the network.

In this scenario, which two actions would solve this problem? (Choose two.)

8. Click the Exhibit button.

A routing table contains multiple BGP routes to the same destination prefix. The route preference is the same for each route.

Referring to the exhibit, which route would be selected?

9. Which statement is true about GRE tunnels?

10. Which device is used to separate collision domains?

11. Click the Exhibit button.

Referring to the exhibit, which path will traffic from R6 take to reach R1?

12. Click the Exhibit button.

Referring to the exhibit, a packet tagged with vlan-id 34 arrives on interface xe-0/2/3.0 with a source MAC that does not match an entry in the DHCP snooping database.

In this scenario, which statement is correct?

13. Which three statements are true regarding not-so-stubby areas (NSSAs)? (Choose three.)

14. Click the Exhibit button.

Referring to the exhibit, which effect does the configuration on R2 have on OSPF routing in the network?

15. What are two terminating actions of a Layer 2 firewall filter? (Choose two.)

16. Which area is reserved for the OSPF backbone?

17. Click the Exhibit button.

You are performing network tests and notice that the Layer 3 interface in the Finance VLAN on an EX Series switch is not responding to pings. You review the device status from the console.

What is causing the problem, as shown in the exhibit?

18. You are adding a new EX4300 member switch to your existing EX4300 Virtual Chassis.

However, the new member is not running the same Junos version as the other members.

By default, what is the expected behavior?

19. Click the Exhibit button.

Referring to the exhibit, which two statements are true regarding IS-IS adjacencies? (Choose two.)

20. Click the Exhibit button.

The IS-IS adjacency between routers R1 and R2 will not establish.

Referring to exhibit, what is the problem?

21. Click the Exhibit button.

Referring to the outputs shown in the exhibit, which statement is correct?

22. Which two statements are true about the IRB interface? (Choose two.)

23. You have deployed a Juniper EX Series switch in the network. The switch receives a broadcast frame on an interface.

Which statement describes the behavior of the switch?

24. What are three components that populate the Ethernet switching table? (Choose three.)

25. Click the Exhibit button.

There are dynamically and statically routed networks attached to the ge-0/0/1 interface on R1. You only want the dynamically learned routes to show up in routing tables for R2 and R3, but the statically routed networks are also appearing. Those networks should only be seen by the R1 device.

Which actions would solve the problem?

26. Click the Exhibit button.

You are unable to establish a BGP session between R2 and ISP-B.

Referring to the exhibit, what must be changed in the configuration?

27. Which three BGP attributes are well-known and mandatory? (Choose three.)

28. Click the Exhibit button.

Referring to the exhibit, which three statements are true? (Choose three.)

29. Click the Exhibit button.

What will be two results of the OSPF configuration shown in the exhibit? (Choose two.)

30. Which protocol prevents loops and calculates the best path through a switched network that contains redundant paths?

31. You received an alert from your monitoring system that the master Routing Engine (RE) on an EX4300 switch in a virtual chassis has hardware issues and might need to be replaced. Because the switch already had graceful Routing Engine switchover (GRES) enabled and configured, you must perform a manual switchover to the backup RE to avoid disruption.

Which command would be used to perform the manual RE switchover?

32. Click the Exhibit button.

You are asked to change the default behavior of your trunk port (ge-0/0/1) to now pass untagged traffic.

Which configuration would accomplish this task?

33. You are currently defining a new OSPF area. The area must advertise external routes but should not receive external routes from another area.

In this scenario, which type of area should you define?

34. Click the Exhibit button.

Referring to the exhibit, which two statement are true? (Choose two.)

35. Which static route next-hop value indicated that the packet will be silently dropped?

36. Click the Exhibit button.

You manage the Layer 2 network shown in the exhibit. You experience a failure on the ge-0/0/0 link between Switch-1 and Switch-2.

Which statement is correct about the expected behavior?

37. 168.35.90 is hidden?

38. Which two statements describe the BGP Local Preference attribute? (Choose two.)

39. Click the Exhibit button.

You have an existing Virtual Chassis consisting of five member devices. Member 3 fails and must be replaced. You remove the EX Series switch with a Member ID of 3 and install a replacement switch in its place using identical cabling as shown in the exhibit. The replacement’s member ID is 6, so the configuration for member ID 3 is not applied to it.

Referring to the exhibit, what should have been done before installing the replacement switch?

40. Click the Exhibit button.

What would cause the status of interface ge-0/0/8 as shown in the exhibit?

41. What are three types of bridge protocol data units? (Choose three.)

42. An EX Series switch receives a frame with an unknown destination MAC address.

What is the expected behavior?

43. Click the Exhibit button.

You are establishing a BGP session between R1 and R2. R2 shows 172.24.1.1 as its peer address for R1 instead of 192.168.100.1.

Referring to the exhibit, what must be changed in the configuration?

44. What is considered a requirement for passing traffic through GRE tunnels?

45. Which two values are used to generate a bridge ID when using STP? (Choose two.)

46. Click the Exhibit button.

You are troubleshooting an IS-IS adjacency problem as shown in the exhibit.

Which action would solve the problem?

47. You manage a Layer 2 network that spans two buildings. You are asked to ensure that all traffic that traverses this connection between the two buildings is secured.

Which port security feature should be used to secure this Layer 2 traffic?

48. You are troubleshooting your OSPF configuration and notice that you have subnet mismatch errors when running the show ospf statisticscommand.

Which two actions would further troubleshoot the errors? (Choose two.)

49. Which statement describes optional transitive BGP attributes?

50. Click the Exhibit button.

Referring to the exhibit, which statement is correct?

51. Click the Exhibit button.

Referring to the exhibit, why is the 0.0.0.0/0 route hidden?

52. What are two OSPF packet types that use multicast for communication on a multicast segment? (Choose two.)

53. Click the Exhibit button.

The configuration shown in the exhibit was committed on an EX Series switch. You are notified that the phone using the voice VLAN does not work. You determine that voice traffic is not passing through the local switch.

What should be done to solve the problem?

54. There is a GRE tunnel configured over the Internet between Router-1 and Router-2. An OSPF adjacency is configured over this GRE tunnel.

However, the OSPF adjacency briefly reaches the Full state before it is torn down. This cycle repeats indefinitely.

Which two actions would you perform to solve this problem? (Choose two.)