Juniper Juniper Certifications JN0-643 Questions & Answers

• Question 51:

  You installed redundant power supplies of different capacities into your EX switch. In this scenario, which statement is true?

  A. The POE power budget is based on the number of ports on the switch.

  B. The POE power budget is based on the combined wattage of both power supplies.

  C. The POE power budget is based on the wattage of the lower capacity power supply.

  D. The POE power budget is based on the wattage of the higher capacity power supply.

  Correct Answer: C

• Question 52:

  You are working with a new MPLS network that is using the default EXP classifier and default schedules. A small amount of traffic is being placed in the assured forwarding class. No other traffic is passing through the network at this time. In this scenario, what happens to the traffic that is being placed in the assured forwarding class?

  A. The traffic is reclassified to the best effort forwarding class and is forwarded.

  B. The traffic remains in the assured forwarding class and is forwarded.

  C. The traffic is reclassified to the network control forwarding class and is forwarded.

  D. The traffic remains in the assured forwarding class and is dropped.

  Correct Answer: B

• Question 53:

  Which statement is correct about private VLANs?

  A. multiple private VLAN instances can be configured on a single switch

  B. you can configure only one private VLAN instances per switch

  C. private VLANs can only be implemented to span more than one switch

  D. a private VLAN instance must be implemented on a single switch

  Correct Answer: B

• Question 54:

  Referring to the exhibit, OSPF is being used as the IGP and Area 1 is a standard OSPF area. USER 1 is sending traffic to server 1, which path will the traffic take?

  

  A. R1>R2>R4>R6>R3

  B. R1>R2>R4>R6>R5>R3

  C. R1>R3

  D. R1>R4>R6>R3

  Correct Answer: B

• Question 55:

  You manage your company's enterprise network using EX series switches. Your company wants to use Q in Q tunneling to correct remote customer sites together, which statement is correct about the scenario?

  A. you must enable L2PT to tunnel layer 2 protocol traffic

  B. the outside layer 2 frame is popped by the penultimate switch

  C. customer traffic is tunneled through the network using the C-VLAN-ID

  D. the default Ethernet type value is 0x9100

  Correct Answer: A

• Question 56:

  Which protocol is a multicast protocol?

  A. OSPF

  B. BGP

  C. PIM

  D. IS-IS

  Correct Answer: C

• Question 57:

  Referring to the exhibit, what must you add to the configuration to allow a receiver connected two interface ge 0/0/6 to subscribe to group 232 0 0 1 from source 172.16.7.1?

  

  A. Add sparse mode to PIM interface ge 0/0/6

  B. Add version 2 the state RP configuration

  C. Add version 3 to IGMP INTERFACE ge 0/0/6

  D. Add version two to IGMP interface ge 0/0/6

  Correct Answer: C

• Question 58:

  The network administrator wants the ports on an EX series switch to allow both tagged and untagged frames to be forwarded. Tagged frames should be associated with their tagged VLAN, while untagged frames should be associated with a preconfigured VLAN. In this scenario, which statement is true?

  A. The interface port mode should be configured as mixed mode to allow both trunk and access port modes, untagged frames will belong to the default VLAN configured on that post.

  B. An interface can be configured as an access port or a trunk port, but it cannot accept both tagged and untagged frames.

  C. The interface port mode should be configured as an access port with a VLAN ID, frames tflSrenter the port with a VLAN tag already assigned will override the access port vlan id.

  D. The interface port mode should be configured as a trunk port, untagged fra^^swill belong to the native Vlan id configured on that port.

  Correct Answer: D

• Question 59:

  Which statement describes 802 1x supplicant single modes?

  A. 802 1x supplicant single mode permit access for the first supplicant, all other applicants that connect to the port are allowed full access without further authentication

  B. 802 1x supplicant single mode allows all supplicant to connect to the port,each supplicant is authenticated individually

  C. 802 1x supplicant single mode permits access for a single supplicant,all other supplicants attempting to connect through the same port are denied access

  D. 802 1x supplicant single mode allows only one supplicant to connect to the port,no other supplicant is allowed to connect until the first supplicant disconnects

  Correct Answer: A

• Question 60:

  You have certainly implemented the configuration shown in the exhibit. After committing these changes, the community devices connected to AS1 are not able to communicate with the appropriate community devices connected to AS2. What must be done to allow these community devices to communicate?

  A. You must configure an isolation VLAN ID under the pvlan 200 on the AS 2 switch

  B. You must configure the ge 0/0/10 interface as AS1 as the pvlan trunk

  C. You must configure an isolation VLAN ID under the pvlan 200 on both the switches

  D. You must configure the ge 0/012 interface on both switches as pvlan trunks

  Correct Answer: D