JN0-351 Online Practice Questions and Answers

Which two statements are true about high availability on Junos devices? (Choose two.)

A. BFD is faster at detecting failures than default GRE or OSPF timers.

B. NSR is independent of helper routers to assist the routing platform in restoring routing protocol information.

C. NSR is dependent on helper routers to assist the routing platform in restoring routing protocol information.

D. BFD is slower at detecting failures than default GRE or OSPF timers.

You are deploying a new switch configuration at a small branch using EX3400 Series switches. You are concerned about loop prevention.

In this scenario, which configuration would you deploy?

A. RSTP

B. EVPN

C. MPLS D. BPDU

Click the Exhibit button.

You are building a network and make some configuration changes. While trying to validate these changes, you receive the error shown in the exhibit.

How would you solve this problem?

A. You must create a new VLAN called all using the VLAN ID of 30.

B. You must configure the ge-0/0/5.0 interface with family inet instead of family ethernet- switching.

C. You must configure the port mode as trunk on the ge-0/0/5.0 interface.

D. You must create two sub-interfaces on ge-0/0/5 with the appropriate VLAN member assigned to each.

Which two statements about a unified ISSU are correct? (Choose two.)

A. It requires that Bidirectional Forwarding Detection be disabled.

B. It requires that graceful Routing Engine switchover be enabled.

C. It is only supported on platforms with redundant control planes.

D. It is only supported on platforms with redundant power supplies.

Click the Exhibit button.

Referring to the exhibit, what does the asterisk(*) following the ge-0/0/5.0 interface indicate?

A. It indicates the interface is not active.

B. It indicates the interface is a trunk port.

C. It indicates the interface is an access port.

D. It indicates the interface is active.

You do not want any spanning tree protocols operating in your environment, and you want to ensure that no BPDUs can be introduced into the environment.

Which statement is true in this scenario?

A. You must run a spanning tree protocol to block BPDUs.

B. Incoming BPDUs are blocked by default if a spanning tree protocol is not operating.

C. You can block BPDUs without running a spanning tree protocol using Layer 3 control.

D. Incoming BPDUs can only be blocked by the root bridge.

Which two statements are true about a unified in-service software upgrade (ISSU)? (Choose two.)

A. The graceful Routing Engine switchover (GRES) and nonstop active routing (NSR) features must be enabled.

B. It is possible to take PICs offline or bring them online during a unified ISSU.

C. Unified ISSU is only supported by the dual Routing Engine platforms.

D. The master Routing Engine and backup Routing Engine can be running different Junos versions before performing a unified ISSU.

Which statement is correct about access ports?

A. Access ports must have an IRB assigned to accept untagged traffic.

B. By default, access ports accept only VLAN tagged traffic.

C. Access ports must have an IRB assigned to accept VLAN tagged traffic.

D. By default, an access port can have only a single VLAN assigned.

Click the Exhibit button.

Referring to the exhibit, which router will be selected as the DR?

A. R1

B. R5

C. R4

D. R3

Which statement about persistent MAC learning is correct?

A. Trunk ports require MAC addresses to be configured on each VLAN.

B. Port moves require manual operator intervention.

C. Access ports must be configured with the no-mac-learning command.

D. 802.1X must be configured on the port for persistent MAC learning to work.