Juniper JNCIS-ENT JN0-349 Questions & Answers

• Question 1:

  Which two port security mechanisms rely on an accurate DHCP snooping database to operate correctly? (Choose two.)

  A. IP source guard

  B. persistent MAC learning

  C. MACsec

  D. dynamic ARP inspection

  Correct Answer: AD

• Question 2:

  What are two interarea OSPF LSA types? (Choose two.)

  A. Type 1 router LSAs

  B. Type 2 network LSAs

  C. Type 3 summary LSAs

  D. Type 4 ASBR summary LSAs

  Correct Answer: CD

• Question 3:

  What types of authentication are supported in Junos for OSPF?

  A. Simple password

  B. MD5 checksum

  C. Hitless key chain of MD5 keys/checksums

  D. All of the above

  Correct Answer: D

• Question 4:

  Click the Exhibit button.

  

  Referring to the exhibit, which port on Switch-2 will be selected as the RSTP root port?

  A. ge-0/0/8.0

  B. ge-0/0/9.0

  C. ge-0/0/10.0

  D. ge-0/0/1.0

  Correct Answer: C

• Question 5:

  Which two statements about BPDU protection are correct? (Choose two.)

  A. By default, you must manually clear a BPDU error condition when using BPDU protection.

  B. BPDU protection prevents unauthorized switches from connecting to and participating in your spanning tree topology.

  C. By default, BPDU protection prevents the root bridge from communicating with other STP members unless it receives a superior BPDU first.

  D. BPDU protection requires that STP or RSTP is configured on the switch.

  Correct Answer: AB

• Question 6:

  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?

  A. route B

  B. route D

  C. route A

  D. route C

  Correct Answer: B

• Question 7:

  Which two statements are true about GRE tunnels on Junos devices? (Choose two.)

  A. Only one GRE tunnel can be included for each logical unit.

  B. Multiple GRE tunnels can be included for each logical unit.

  C. GRE interfaces can include multiple logical units.

  D. GRE interfaces can include only a single logical unit.

  Correct Answer: AC

• Question 8:

  By default, how long will a learned MAC address be retained in the bridge table on an EX Series switch?

  A. 600 seconds

  B. 3600 seconds

  C. 300 seconds

  D. 1800 seconds

  Correct Answer: C

• Question 9:

  Which two statements about a Virtual Chassis are correct? (Choose two.)

  A. A Virtual Chassis is managed using a single virtual console port.

  B. You must use the same EX Series switch for all members in a Virtual Chassis.

  C. All members in a Virtual Chassis must be running the same Junos version.

  D. Each device must be managed separately.

  Correct Answer: AC

• Question 10:

  You have configured storm control on your network devices. Your network has grown and you no longer have time to investigate each occurrence of a storm control violation. You want to enable a port to automatically be re-enabled after a storm violation. In this scenario, which Junos OS configuration timeout would accomplish this task?

  A. Configure the secure access port timeout.

  B. Configure the port error disable timeout.

  C. Configure the BPDU blocking timeout.

  D. Configure the MAG aging table timeout.

  Correct Answer: B