Juniper Juniper Certifications JN0-343 Questions & Answers

• Question 21:

  Which two statements are true about OSPF not-so-stubby areas? (Choose two.)

  A. The ASBR originates Type 7 LSAs for redistributed external routes.

  B. Type 7 LSAs are translated by the ABR into Type 5 LSAs.

  C. The ASBR originates Type 5 LSAs for redistributed external routes.

  D. Type 5 LSAs are translated by the ABR into Type 7 LSAs.

  Correct Answer: AB

• Question 22:

  Which two statements are correct about DIS election in IS-IS? (Choose two.)

  A. If there is a priority tie, the router with the lowest subnet or MAC address is selected.

  B. The router with the highest priority is selected as the DIS

  C. If there is a priority tie, the router with the highest subnet or MAC address is selected

  D. The router with the lowest priority is selected as the DIS.

  Correct Answer: BC

• Question 23:

  Which two statements are true about IS-IS router behavior? (Choose two.)

  A. An IS-IS router attached to a broadcast, multi-access network establishes adjacencies with all of its neighbors on the network.

  B. An IS-IS router attached to a broadcast, multi-access network establishes an adjacency only to the network's elected DIS.

  C. If an IS-IS DIS attached to a broadcast, multi-access network fails, the backup DIS assumes the primary DIS role.

  D. If an IS-IS DIS attached to a broadcast, multi-access network fails, a new DIS is elected.

  Correct Answer: AD

• Question 24:

  Referring to the exhibit, you are asked to ensure that host-1 can communicate with host-3 while also allowing hosy-2 to communicate with host-4. What should you do to enable this behavior?

  

  A. Use the all keyword when defining the member VLANs for the ge-0/0/1 interface on both Switch-1 and Switch-2.

  B. Configure the native-vlan-id default statement under the ge-0/0/1 port settings on both Switch-1 and Switch-2.

  C. Use the all keyword when defining the member VLANs for the ge-0/0/1 interface on Switch- 1.

  D. Configure the native-vlan-id default statement under the ge-0/0/1 port settings on Switch-1.

  Correct Answer: A

• Question 25:

  You notice that there are currently two MAC addresses associated with a single access port in the bridge table on one of your EX Series switches.

  What are two explanations for this behavior? (Choose two.)

  A. The access port connects to an IP phone which connects to a host device.

  B. The native VLAN feature has been associated with the access port.

  C. The mac-move-limit feature has been disabled on the access port.

  D. The access port connects to multiple hosts through a rogue device.

  Correct Answer: AD

• Question 26:

  -- Exhibit ?

  

  -- Exhibit -

  You manage the network shown in the exhibit. All four switches have the default RSTP settings. The elected root bridge is switch-1. You must ensure that switch-4 always prefers the connection to switch-3 to reach the root bridge.

  Which two configurations will accomplish this task? (Choose two.)

  {master:0}[edit]

  A. user@switch-4# show protocols rstp { interface ge-0/0/3.0 { priority 64; cost 20000; } } {master:0}[edit]

  B. user@switch-4# show protocols rstp { interface ge-0/0/3.0 { priority 128; cost 20000; } } {master:0}[edit]

  C. user@switch-3# show protocols rstp { interface ge-0/0/2.0 { priority 240; cost 200000; } } {master:0}[edit]

  D. user@switch-3# show protocols rstp { interface ge-0/0/2.0 { priority 128; cost 2000; } }

  Correct Answer: AD

• Question 27:

  You have four interconnected switches all using default RSTP parameters. You are asked to ensure that S1 becomes the root bridge. Which configuration will accomplish this task?

  A. {master:0}[edit] user@S1# show protocols rstp { hello-time 2; interface ge-0/0/1.0 { cost 1;

  }

  interface ge-0/0/2.0 {

  cost 1;

  }

  }

  B. {master:0}[edit] user@S1# show protocols rstp { hello-time 2; interface ge-0/0/1.0 { priority 16; } interface ge-0/0/2.0 { priority 16; } }

  C. {master:0}[edit] user@S1# show protocols rstp { bridge-priority 16k; hello-time 2; interface ge-0/0/1.0 { cost 100; } interface ge-0/0/2.0 { cost 100; } }

  D. {master:0}[edit] user@S1# show protocols rstp { bridge-priority 32k; hello-time 2; interface ge-0/0/1.0 { priority 16; } interface ge-0/0/2.0 { priority 16; } }

  Correct Answer: C

• Question 28:

  -- Exhibit -{master:0} user@switch> show spanning-tree interface Spanning tree interface parameters for instance 0 Interface Port ID Designated Designated Port State Role port ID bridge ID Cost ge-0/0/6.0 128:519 128:519 32768.0019e2552481 200000 FWD DESG ge-0/0/7.0 64:520 64:520 32768.0019e2552481 20000 FWD DESG ge-0/0/8.0 32:521 32:521 32768.0019e2552481 20000 FWD DESG ge-0/0/9.0 32:522 32:522 32768.0019e2552481 200000 FWD DESG ge-0/0/11.0 32:524 32:524 32768.0019e2552481 2000 FWD DESG ge-0/0/12.0 64:525 64:525 32768.0019e2552481 2000 FWD DESG ge-0/0/13.0 64:526 64:526 32768.0019e2552481 2000 FWD DESG -- Exhibit -Which three statements are correct regarding the information shown in the exhibit? (Choose three.)

  A. ge-0/0/6 is using the default interface priority.

  B. ge-0/0/11 is selected as the root port.

  C. This switch is the root bridge.

  D. This switch is not the root bridge.

  E. ge-0/0/7 is using the default interface cost.

  Correct Answer: ACE

• Question 29:

  Which two port security features are dependent on the DHCP snooping database? (Choose two.)

  A. IP source guard

  B. MAC limiting

  C. dynamic ARP inspection

  D. storm control

  Correct Answer: AC

• Question 30:

  -- Exhibit ?

  

  -- Exhibit -Referring to the exhibit, which two elements must be configured to pass both tagged voice and untagged data traffic? (Choose two.)

  A. The ge-0/0/1 interface must be configured as a trunk port.

  B. The ge-0/0/1 interface must be configured as an access port.

  C. The ge-0/0/0 interface must be configured for the voice VLAN.

  D. The ge-0/0/1 interface must be configured for the voice VLAN.

  Correct Answer: BD