Juniper Juniper Certifications JN0-343 Questions & Answers

• Question 371:

  You recently implemented a Layer 2 network using RSTP. Which three statements are true regarding a topology change reconvergence scenario? (Choose three.)

  A. Switches do not flush MAC addresses learned from edge ports.

  B. When a port transitions to the discarding state on edge or nonedge ports, TCNs are generated and flooded.

  C. When a port transitions to the forwarding state on nonedge ports, the local switch generates and floods TCNs.

  D. Switches do not flush MAC addresses learned through the same port through which TCNs are received.

  E. When a port transitions to the forwarding state on edge ports, the local switch generates and floods TCNs.

  Correct Answer: ACD

• Question 372:

  You just implemented a Layer 2 network that uses RSTP. Which two statements are true? (Choose two.)

  A. All operational switch ports configured for edge mode will immediately transition to the forwarding state.

  B. All operational switch ports configured for full-duplex operation will function in point-to- point mode.

  C. You must manually specify the interfaces you want to operate in point-to-point mode.

  D. Edge ports automatically discard received BPDUs.

  Correct Answer: AB

• Question 373:

  You see a route in your local routing table that was learned using OSPF. Which command allows you to determine where the route originated?

  A. show ospf route

  B. show route protocol ospf

  C. show ospf database

  D. show ospf log

  Correct Answer: C

• Question 374:

  

  In the output shown in the exhibit, which protocol does the route display?

  A. static

  B. aggregate

  C. generate

  D. BGP

  Correct Answer: C

• Question 375:

  

  What is the purpose of the configuration shown in the exhibit?

  A. This configuration causes all routes for directly connected interfaces to be installed in oth the inet.0 routing table and the inet.0 routing table for the blue routing instance.

  B. This configuration causes all routes for directly connected interfaces that are assigned to the blue routing instance to be installed in both the inet.0 routing table and the inet.0 routing table for the blue routing instance.

  C. This configuration causes all routes from inet.0 to also be installed in blue.inet.0.

  D. This configuration allows you to specify my-rib-group in a static route's next-table statement to cause the static route to first try to resolve the address in inet.0 and then in blue.inet.0.

  Correct Answer: A

• Question 376:

  Which misconfiguration would cause an OSPF neighbor ship to be stuck in an ExStart state?

  A. authentication mismatch

  B. timer mismatch

  C. subnet mismatch

  D. MTU mismatch

  Correct Answer: D

• Question 377:

  Which command can you use to view the link-state PDUs?

  A. show isis database detail

  B. show isis route detail

  C. show isis adjacency

  D. show isis spf results

  Correct Answer: A

• Question 378:

  What is a benefit of the 802.3ad standard?

  A. loop detection

  B. security

  C. higher bandwidth

  D. strict queuing

  Correct Answer: C

• Question 379:

  

  On Switch-1, all configured interfaces belong to the default VLAN. Based on the topology and bridge table shown in the exhibit, which two operations will Switch-1 perform if it receives a frame sent by User A with a destination MAC address of 00:26:88:02:74:89? (Choose two.)

  A. Switch-1 will flood the frame out all switch ports that belong to the default VLAN.

  B. Switch-1 will flood the frame out all switch ports except ge-0/0/6.0.

  C. Switch-1 will forward the frame out ge-0/0/9.0.

  D. Switch-1 will update its bridge table with a new MAC entry for the device associated with User

  Correct Answer: BD

• Question 380:

  You have a route in the inet.0 routing table that has four valid physical next hops assigned to it. Which event prompts an update to the information in the forwarding table for this particular route?

  A. When a new physical next hop is added to the next-hop set.

  B. When any configuration change is committed on the router.

  C. When a packet is forwarded towards the route destination.

  D. When an additional route of the same IP address class is added to inet.0.

  Correct Answer: A