Juniper Juniper Certifications JN0-343 Questions & Answers

• Question 451:

  Which two prerequisites does IS-IS need to operate? (Choose two.)

  A. IS-IS must be able to communicate between devices using IP.

  B. IS-IS must be able to communicate using CLNS.

  C. IS-IS must have a valid IP address configured on the loopback.

  D. IS-IS must have a valid CLNS address.

  Correct Answer: BD

• Question 452:

  What does the attach bit in an IS-IS PDU indicate?

  A. The L1/L2 router is exporting a default route into the area.

  B. The L1/L2 router has reachability information to another IS-IS area.

  C. C. The L1/L2 router is sending information from Level 2 towards Level 1.

  D. The L1/L2 router is sending information from Level 1 towards Level 2.

  Correct Answer: B

• Question 453:

  What can cause a route learned through IBGP to be marked as hidden?

  A. unreachable next hop

  B. local preference

  C. AS path loop

  D. route preference

  Correct Answer: A

• Question 454:

  Which approach can you use to implement IPv6-over-IPv4 tunneling?

  A. IPv4-compatible addressing

  B. dual-stack implementations

  C. IPsec

  D. 6PE

  Correct Answer: C

• Question 455:

  You want to configure filter-based forwarding. What are the three required configuration elements? (Choose three.)

  A. routing instance

  B. firewall filter

  C. policy statement

  D. prefix list

  E. RIB group

  Correct Answer: ABE

• Question 456:

  You must route both IPv4 and IPv6 packets in your environment. Which configuration should you add at the [edit protocols] level to allow you to accomplish this objective?

  A. ospf { area 0.0.0.0 { interface all; } }

  B. ospf { area 0.0.0.0 { interface all; family inet6; } }

  C. ospf3 { area 0.0.0.0 { interface all; } }

  D. ospf3 { area 0.0.0.0 { interface all; allow ipv4; } }

  Correct Answer: C

• Question 457:

  Which three actions are valid methods to clear all entries from the Ethernet switching table on an EX Series switch? (Choose three.)

  A. Restart the eswd process.

  B. Issue the clear arp operational-mode command.

  C. Reboot the switch.

  D. Issue the clear ethernet-switching table operational-mode command.

  E. Restart the rpd process.

  Correct Answer: ACD

• Question 458:

  In a switched network with redundant paths, which frame does not require the implementation of a spanning tree to prevent a loop?

  A. broadcast

  B. unknown MAC address

  C. known MAC address

  D. ARP request

  Correct Answer: C

• Question 459:

  An EX Series switch receives an Ethernet frame with a destination MAC address that is not in the bridging table. How does the Junos OS handle the received frame?

  A. The Junos OS learns the source MAC address and drops the frame.

  B. The Junos OS learns the source MAC address and floods discovery BPDUs.

  C. The Junos OS learns the source MAC address forwards the frame towards the root bridge.

  D. The Junos OS learns the source MAC address and floods the frame.

  Correct Answer: D

• Question 460:

  You want to secure an interface on a switch so that a rogue switch running STP can not be plugged into this interface. What accomplishes this objective?

  A. BPDU protection

  B. edge protection

  C. rogue protection

  D. root protection

  Correct Answer: A