Juniper Juniper Certifications JN0-643 Questions & Answers

• Question 1:

  You are implementing PoE on your EX Series switch to provide power to your VoIP phones. You have a device that does not provide its class information to the switch. Which power class is assigned for this device?

  A. 0

  B. 2

  C. 4

  D. 6

  Correct Answer: A

• Question 2:

  You have been asked to implement 802.1X in your network and to ensure that all authorized users continue to be permitted should the RADIUS server fail. Which solution will satisfy this requirement?

  A. Implement the persistent MAC feature with the override option.

  B. Implement the server fail fallback feature with the override option.

  C. Implement the persistent MAC feature with the use-cache option.

  D. Implement the server fail fallback feature with the use-cache option.

  Correct Answer: D

• Question 3:

  Which statement is correct regarding the isolated ports?

  A. isolated ports are trunk ports that have layer 2 connectivity with all other ports

  B. isolated port are access ports that only have layer 2 connectivity with other isolated port

  C. isolated port are access port that only have layer 2 connectivity with promosious ports

  D. isolated port are trunk ports that have layer 2 connectivity with all community ports

  Correct Answer: C

• Question 4:

  Which of following multicast group is used for all PIMrouters?

  A. 224.0.0.1

  B. 224.0.0.2

  C. 224.0.0.13

  D. 224.0.0.22

  Correct Answer:

• Question 5:

  You are a service provider and have multiple customers in a building. You are installing a new switch that can host all of your customers. However, you would like to ensure that one customer cannot see or broadcast to another customer. You

  would also like to have them use a common gateway IP address from the building.

  What of following should be used to provide this access?

  A. Layer 2 tunneling

  B. VLAN

  C. filter-based VLAN

  D. private VLAN

  Correct Answer: D

• Question 6:

  A packet enters the router and is subject to ingress's processing. In which order is the packet processed?

  A. Policer >BA classifier>multifield classifier>forwarding policy

  B. multifield classifier>BA classifier>policer>forwarding policy

  C. BA classifier>multifieldclaasssifier>policer>forwarding policy

  D. forwarding policy> BA classifier>multifield classifier>policer

  Correct Answer: C

• Question 7:

  You are receiving the same prefix from multiple EGBP peers in different autonomous systems. Which two configurations enable your systemto load balance across all received instances?

  A. multilpath multiple-as

  B. policy-statement LB{ Then{ Load-balance per-flow; } }

  C. policy-statement LB{ Then{ Load-balance per-packet; } }

  D. Multihop

  Correct Answer: AC

• Question 8:

  Referring to the exhibit, R2 is exporting the route for server1 as a Type 2 external route and R6 is exporting the route for server 1 as a type 1 external route in OSPF. Which path is taken to reach server-1 from user1?

  

  A. R1>R3>R6

  B. R1>R2

  C. R1>R4>R6

  D. R1>R2>R4>R6

  Correct Answer: D

• Question 9:

  Which protocol is used for port level access control and authentication?

  A. MD5

  B. IP sec

  C. 802 IX

  D. AES

  Correct Answer: C

• Question 10:

  When configuring class of service, what would you use to allocate bandwidth to a forwarding class?

  A. buffer depth

  B. transmit rate

  C. bandwidth

  D. speed

  Correct Answer: B