Juniper JNCIS JN0-343 Questions & Answers

• Question 1:

  In the exhibit, each IP subnet in the campus environment is associated with a unique VLAN ID. Which action will ensure that Host C will communicate with Host A and Host B?

  

  A. Configure all switch ports connecting to the host devices as access ports associated with a common VLAN.

  B. Configure a routed VLAN interface for each VLAN and associate it with its corresponding VLAN.

  C. Configure a port-based ACL that permits inter-VLAN routing for all configured VLANs

  D. Configure all switch ports connecting to the host devices as trunk ports associated with all VLANs.

  Correct Answer: A

• Question 2:

  Referring to the exhibit, which type of route is displayed?

  

  A. aggregate

  B. static

  C. martian

  D. generate

  Correct Answer: A

• Question 3:

  Referring to the exhibit, Router-1 and Router-2 are failing to form an IS-IS adjacency.

  What should you do to solve problems?

  [edit]

  user@Router-1# show interfaces

  ge-0/0/0 {

  unit 0 {

  family inet {

  address 10.10.10.33/24;

  }

  }

  }

  ge-0/0/2 {

  unit 0 {

  family inet {

  address 10.1.0.254/24;

  }

  family iso {

  address 49.0003.0192.0168.0113.00;

  }

  }

  }

  lo0 {

  unit 0 {

  family inet {

  address 192.168.1.11/32;

  }

  family iso {

  address 49.0002.0192.0168.0111.00;

  }

  }

  }

  [edit]

  user@Router-1# show protocols

  isis {

  overload;

  level 2 disable;

  interface all;

  }

  [edit]

  user@Router-2# show interfaces

  ge-0/0/0 {

  unit 0 {

  family inet {

  address 10.10.10.34/24;

  }

  }

  }

  ge-0/0/2 {

  unit 0 {

  family inet {

  address 10.1.0.1/16;

  }

  family iso;

  }

  }

  lo0 {

  unit 0 {

  family inet {

  address 192.168.1.12/32;

  }

  family iso {

  address 49.0001.0192.0168.0112.00;

  }

  }

  }

  [edit]

  user@Router-2# show protocols

  isis {

  interface all;

  }

  A. Remove the overloaded statement from Router-1.

  B. Change the IP subnet masks to match on the ge-0/0/2 interfaces of both routers.

  C. Remove the ISO address from ge-0/0/2 on Router-1.

  D. Change the ISO areas on the Io0 interfaces to match on both routers.

  Correct Answer: D

• Question 4:

  You are asked to inspect your EX Series switch for MAC limit violations.

  Which two CLI commands would you use? (Choose two.)

  A. show ethernet-switching mac-notification

  B. show ethernet-switching interfaces

  C. show log messages | match "mac limit"

  D. show ethernet-switching mac-learning-log

  Correct Answer: BC

• Question 5:

  In an OSPF hello packet, which field is evaluated only on broadcast media links?

  A. network mask

  B. hello interval

  C. dead interval

  D. options

  Correct Answer: A

• Question 6:

  What would be used to combine multiple switches into a single management platform?

  A. redundant trunk groups

  B. Virtual Chassis

  C. graceful Routing Engine switchover

  D. Virtual Router Redundancy protocol

  Correct Answer: B

• Question 7:

  Which bridging mechanism is used to obtain the MAC addresses of nodes on the network?

  A. listening

  B. aging

  C. learning

  D. filtering

  Correct Answer: C

• Question 8:

  Which two prefixes are martian routes by default? (Choose two.)

  A. 192.0.0.0/24

  B. 127.0.0.0/8

  C. 192.0.0.0/16

  D. 127.0.0.0/16

  Correct Answer: AB

• Question 9:

  How many bytes of overhead does the GRE header and outer IP header add to a packet?

  A. 24 bytes

  B. 28 bytes

  C. 20 bytes

  D. 14 bytes

  Correct Answer: B

• Question 10:

  -- 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-0/0/1.0 142:519 142:519 0.002688027490 10000 FWD ROOT ge-0/0/2.0 142:520 142:520 4128.0019e2516580 10000 FWD DESG ge-0/0/3.0 142:521 142:521 4128.0019e2516580 10000 BLK DIS (Loop-Incon) -- Exhibit -Referring to the exhibit, which statement is true about the ge-0/0/3 interface?

  A. The switch has transitioned the port to a loop-inconsistent state.

  B. The switch received a superior BPDU on a root protected port.

  C. The switch has transitioned to a blocking state due to BPDU protection.

  D. The switch port is normally in blocking mode.

  Correct Answer: A