JN0-349 by Juniper Valid Free Exam Practice Test

Question 1

What are three reasons a router would send out an IS-IS link-state PDU? (Choose three.)

A. A new external route is imported from BGP. B. The cost of a link to an existing neighbor has changed. C. A new neighbor exists on the link. D. IS-IS sends link-state PDUs at random intervals. E. The router's link to a neighbor goes down.

Correct Answer: B,C,E

Question 2

What BGP attribute is mostly likely to influence a remote AS that you do not peer with?

A. MED B. This is not possible given the local scope of BGP C. Local preference D. AS path

Correct Answer: D

Question 3

Which two statements about Layer 2 loop prevention protocols are correct? (Choose two.)

A. STP can take 30 to 50 seconds to respond to a topology change. B. RSTP distributes the current tree topology using the root bridge. C. STP distributes the current tree topology using the root bridge. D. RSTP can take 30 to 50 seconds to respond to a topology change.

Correct Answer: A,B

Question 4

If an EX Series switch receives a frame with a known destination MAC address, what is the expected behavior?

A. The frame is sent out all ports assigned to all configured VLANs except the ingress port on which the frame was received. B. The frame is sent out all ports assigned to the associated VLAN except the ingress port on which the frame was received. C. The frame is sent out the egress port with a matching destination MAC address within the bridge table associated with the ingress VLAN. D. The frame is sent out all trunk ports associated with the ingress VLAN regardless of whether a matching MAC address was found in the bridge table.

Correct Answer: C

Question 5

You are troubleshooting OSPF issues on your device. You run a trace log and receive the error shown in the exhibit.

What would case this error?

A. stub area mismatch B. subnet mismatch C. MD5 authentication error D. missing route policy

Correct Answer: A

Question 6

Click the Exhibit button.

Which statement is true about the configuration shown in the exhibit?

A. Both the adv-aggregate and adv-custom export policies will be evaluated when routes are sent to neighbor 172.30.2.1. B. Only the adv-custom export policy will be evaluated when routes are sent to neighbor 172.30.2.1. C. Both the adv-aggregate and next-hop-self export policies will be evaluated when routes are sent to neighbor 172.30.1.1. D. Only the next-hop-self export policy will be evaluated when routes are sent to neighbor 172.30.1.1.

Correct Answer: B

Question 7

You must limit access to a printer with a persistent DHCP address of 2001:db8:0000:50::10/64 in VLAN v50 to users assigned to VLAN v50 only.
Which action would satisfy this requirement?

A. Implement a firewall filter on the IRB interface for VLAN v50, blocking traffic to/from 2001:db8:0000:50::10. B. Implement persistent MAC learning to ensure that 2001:db8:0000:50::10 is allocated properly. C. Implement a firewall filter on the VLAN v50, blocking traffic to/from 2001:db8:0000:50::10. D. Implement DHCP snooping on VLAN v50 to ensure that 2001:db8:0000:50::10 is allocated properly.

Correct Answer: A

Question 8

Click the Exhibit button.

Referring to the output shown in the exhibit, which two statements are correct? (Choose two.)

A. The device is not an ABR. B. The device originated the 192.168.1.1 database entry. C. The device is an ABR. D. The device originated the 192.168.1.2 database entry.

Correct Answer: C,D

Juniper Enterprise Routing and Switching, Specialist (JNCIS-ENT) - JN0-349 Exam Practice Test