Free JN0-351 Practice Test Questions 2026

Which two statements are correct about IS-IS? (Choose two.)

A. IS-IS uses IPv6 as its transport protocol in the Junos OS Implementation.

B. IS-IS has two metric types and Junos sends both by default.

C. IS-IS sends a maximum metric value of 63 by default.

D. IS-IS only allows you to configure two areas.

You are using tunnels in your network. It is important that the routes be specific enough to ensure that the tunnels are established. You need to prevent a route that is new to the network from being used. In this scenario, which type of route should be used?

A. aggregate

B. anycast

C. static

D. multicast

Which two statements are correct about link aggregation? (Choose two.)

A. LAGs provide physical layer redundancy.

B. Member links must use the same MTU. C.

C. IP traffic is hashed using source and destination MAC addresses

D. All RE-generated traffic traverses the lowest member link.

You are asked to configure a redundant trunk group (RTG). Which two requirements would accomplish this task? (Choose two.)

A. The RTG must be participating in a Spanning Tree topology.

B. Interfaces within an RTG can be configured as access ports.

C. Interfaces within an RTG must be configured as trunk ports.

D. Both interfaces of an RTG must be configured to service the same VLANS

You deployed a new EX Series switch with DHCP snooping enabled and you do not see any entries in the snooping databases for an interface. Which two Juniper configurations for that interface caused this issue? (Choose two.)

A. The interface is configured as a disabled port.

B. MAC limiting is enabled on the interface.

C. The interface is configured as a trunk port.

D. Dynamic ARP inspection is enabled on the interface.

You have deployed a Juniper EX Series switch in the network. The switch receives a unicast frame destined to a MAC address that is not registered in the bridging table. Which statement describes the behavior of the switch?

A. The frame is flooded out all ports in all VLANs configured on the switch.

B. The frame is flooded out all ports that are part of the same VLAN, except the receiving port.

C. The switch performs an ARP request to discover the MAC address of the destination host.

D. The switch sends an error message to the sender declaring that the host is unreachable.

You have DHCP snooping enabled but no entries are automatically created in the snooping database for an interface on your EX Series switch. What are two reasons for the problem? (Choose two.)

A. The device that is connected to the interface has performed a DHCPRELEASE.

B. MAC limiting is enabled on the interface.

C. The device that is connected to the interface has a static IP address.

D. Dynamic ARP inspection is enabled on the interface.

Exhibit.

What is the management IP address of the device shown in the exhibit?

A. 10.210.20.233

B. 172.23.12.100

C. 128.0.0.1

D. 172.23.11.10

Your network has two ISPs available. You want to ensure that all outbound traffic is routed out ISP-1. If the connection to ISP-1 fails, all outbound traffic is routed to the backup ISP ISP-2. In this scenario, how should you configure BGP on your network?

A. Set the local-preference attribute to a higher value tor ISP-2 than ISP-1.

B. Set the local-preference attribute to a higher value for ISP-1 than ISP-2.

C. Configure the gateway for ISP-1 with a higher peer ID than the gateway for ISP-2.

D. Configure the gateway for ISP-1 with a higher origin code than the gateway for ISP-2.

What does the MAC limiting feature do on EX Series switches?

A. It limits the number of MAC addresses learned on an access port.

B. It limits the number of MAC addresses learned on a trunk port.

C. It limits the acceptable values for a MAC address to a specified range.

D. It limits the time a learned MAC address stays in the MAC routing table.

Which statement is correct about controlling the routes installed by a RIB group?

A. An import policy is applied to the RIB group.

B. Only routes in the last table are installed.

C. A firewall filter must be configured to install routes in the RIB groups.

D. An export policy is applied to the RIB group.

Exhibit:

When trying to commit the configuration shown in the exhibit, you receive an error. What is the problem?

A. You have omitted the interface-mode trunk command.

B. You have not configured an IP address to the interface.

C. You have not set the interface family correctly.

D. You have omitted the interface-mode access command.