Juniper Juniper Certifications JN0-343 Questions & Answers

• Question 551:

  Which STP protection feature should you use to prevent an inadvertent change in topology caused by the receipt of a superior BPDU on an access interface?

  A. BPDU protection

  B. loop protection

  C. root protection

  D. topology protection

  Correct Answer: C

• Question 552:

  Which command verifies that graceful Routing Engine switchover (GRES) is operational?

  A. show system switchover on the master RE

  B. show system switchover on the backup RE

  C. show task replication on the master RE

  D. show task replication on the backup RE

  Correct Answer: B

• Question 553:

  

  Based on the exhibit, in which spanning-tree state would the indicated port be?

  A. listening

  B. learning

  C. forwarding

  D. blocking

  Correct Answer: C

• Question 554:

  By default, how frequently does the designated intermediate system (DIS) send out its hello packets?

  A. 3 seconds

  B. 6 seconds

  C. 9 seconds

  D. 12 seconds

  Correct Answer: A

• Question 555:

  Which BGP attributes are listed in the correct route selection order?

  A. local preference, AS path, origin, MED

  B. local preference, MED, AS path, origin

  C. AS path, local preference, origin, MED

  D. MED, origin, local preference, AS path

  Correct Answer: A

• Question 556:

  Which option shows the configuration syntax for a routed VLAN interface on an EX Series switch?

  A. interfaces { vlan { unit 10 { family inet { address 1.1.1.1/24; } } } } vlans { VLAN10 { vlan-id 10; routing-interface vlan.10; } }

  B. interfaces { vlan { unit 10 { family inet { address 1.1.1.1/24; } } } } vlans { VLAN10 { vlan-id 10; l3-interface vlan.10; } }

  C. vlans { VLAN10 { vlan-id 10; family inet { address 1.1.1.1/24; } } }

  D. interfaces { vlan { unit 10 { family inet { address 1.1.1.1/24; } } } } vlans { VLAN10 { vlan-id 10; } }

  Correct Answer: B

• Question 557:

  When using the factory-default configuration, which VLAN is assigned to all interfaces on an EX Series switch?

  A. vlan1

  B. native

  C. default

  D. unnumbered

  Correct Answer: C

• Question 558:

  How does a Level 1 IS-IS router reach destinations outside its own area?

  A. through the closest Level 1 router

  B. along the best path to the destination

  C. through the closest Level 1/2 router

  D. through the closest designated intermediate system (DIS)

  Correct Answer: C

• Question 559:

  When the DF bit is set, which two actions will a router perform by default on a packet that is larger than the MTU of the interface? (Choose two.)

  A. The router drops the packet.

  B. The router sends an ICMP MTU exceeded message to the source.

  C. The router fragments and forwards the packet.

  D. The router generates a syslog message indicating that a packet was dropped due to the exceeded MTU.

  Correct Answer: AB

• Question 560:

  Which configuration summarizes external routes in the 172.16.0.0/22 range into a single prefix on an ABR for Area 1?

  A. protocols { ospf { area 0.0.0.1 { nssa { default-lsa { default-metric 1; metric-type 1; } } area-range 172.16.0.0/22; } } }

  B. protocols { ospf { area 0.0.0.1 { nssa { area-range 172.16.0.0/22; } } } }

  C. protocols { ospf { area 0.0.0.1 { stub summaries; } } }

  D. protocols { ospf { area 0.0.0.1 { nssa; area-range 172.16.0.0/22 restrict; } } }

  Correct Answer: B