Free JN0-351 Practice Test Questions 2026

What are two purposes of an aggregate route? (Choose two.)

A. to decrease the number of route advertisements

B. to hide internal routes from external peers

C. to allow external peers to see internal routes

D. to increase the number of route advertisements

Your GRE tunnel is not transitioning to the Up status. What would be the first step in troubleshooting the problem?

A. Verify tunnel endpoint reachability.

B. Verify that the status of the management interface is up.

C. Verify the status of the management routing instance.

D. Verify that the routing instance for GRE tunnels is created.

You have two OSPF routers forming an adjacency. R1 has a priority of 32 and a router ID of 192.168.1.2. R2 has a priority of 64 and a router ID of 192.168.1.1. The routers were started at the same time and all other OSPF settings are the default settings. Which statement is correct in this scenario?

A. At least three routers are required for a DR/BDR election.

B. Router IDs must match for an adjacency to form.

C. R2 will be the BDR.

D. R1 will be the BDR.

Exhibit

Which command displays the output shown in the exhibit?

A. show route forwarding-table

B. show ethernet-switching table

C. show ethernet—switching table extensive

D. show route forwarding—table family ethernet-switching

Which two statements are true about the default VLAN on Juniper switches? (Choose two.)

A. The default VLAN is set to a VLAN ID of 1 by default

B. The default VLAN ID is not assigned to any interface.

C. The default VLAN ID is not visible.

D. The default VLAN ID can be changed.

Exhibit

Referring to the exhibit, which two configuration changes must you apply for packets to reach from R1 to R3 using IS-IS? (Choose two.)

A. On R1, enable Level 1 on the ge-0/0/1 interface.

B. On R3 disable Level 2 on the ge-0/0/4 interface.

C. On R1, disable Level 2 on the ge-0/0/1 interface.

D. On R3 enable Level 1 on the ge-0/0/4 interface

What is a purpose of using a spanning tree protocol?

A. to look up MAC addresses

B. to eliminate broadcast storms

C. to route IP packets

D. to tunnel Ethernet frames

You are asked to change the setting for the LSAs age out back to the default value. In this scenario, which time interval will accomplish this task?

A. 1800 seconds

B. 600 seconds

C. 300 seconds

D. 3600 seconds

Which statement is correct about graceful Routing Engine switchover (GRES)?

A. The PFE restarts and the kernel and interface information is lost.

B. GRES has a helper mode and a restarting mode.

C. When combined with NSR, routing is preserved and the new master RE does not restart rpd.

D. With no other high availability features enabled, routing is preserved and the new master RE does not restart rpd.

Which two statements are correct about Martian routes? {Choose two.)

A. Martian routes are never installed in the route table.

B. Additional prefixes can be added to the list of Martian routes.

C. Martian routes only represent publicly used prefixes.

D. Martian routes are always host addresses.

You are deploying a trunk port with multiple VLANs. In this scenario, which statement is true about the native VLAN?

A. The native VLAN must be the default VLAN on the port.

B. The native VLAN is automatically configured through DHCP.

C. The native VLAN is an untagged VLAN ID on the port.

D. The native VLAN is the highest tagged VLAN ID on the port.

You enable persistent MAC learning on your Juniper switch In this scenario, which statement is correct?

A. You can enable persistent MAC learning on an interface where MAC learning is disabled.

B. You can enable persistent MAC learning on an interface that is part of a redundant trunk group.

C. You can only enable persistent MAC learning on an interface in access mode.

D. You can only enable persistent MAC learning on an interface on which 802.1x authentication is configured.