Juniper Juniper Certifications JN0-643 Questions & Answers

• Question 11:

  You are attempting to configure BGP peering to a new service provider. The BGP peering state is stuck in the active state. What are two reasons for this happening? (Choose two)

  A. The local autonomous system number is not configure.

  B. The origin ID is not configure.

  C. The peer IP address is incorrect.

  D. The peer autonomous number is incorrect.

  Correct Answer: C

• Question 12:

  You manage your company enterprises network using EX series switches. Your company wants to use Q in Q tunneling to connect remote customer sites together. Which statement is correct about the scenario?

  A. You must enable L2PTto 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 value is 0x9100

  Correct Answer: A

• Question 13:

  Which two statements about VSTP on EX series switches are connect? (Choose two)

  A. All VLANS beyond the first 64 will not be supported by VSTP

  B. VSTP automatically assigns each VLAN to one spanning tree instances

  C. VSTP must be used to intemperate with MVRP

  D. VSTP must be used to intemperate with PVST+

  Correct Answer: BD

• Question 14:

  You want to deploy MSTP with multiple regions. Each region should have a unique root bridge to accommodate a set of VLANs. Which three configuration elements must watch on switches participating in this deployment scenario? (Choose three)

  A. MSTI toVLAN mapping

  B. revision level

  C. CST BPDU parameters

  D. configuration name

  E. bridge priority

  Correct Answer: ABD

• Question 15:

  Which policy statement will be applied to neighbor 172.16.4.2?

  A. policy-statement all and policy -statement agg

  B. policy-statement agg

  C. policy-statement all and policy -statement atat

  D. policy-statement atat

  Correct Answer: A

• Question 16:

  Which two statements is true regarding the next hop attribute? (Choose two)

  A. it is not changed when sent across EBGP sessions

  B. it is changed to self for IBGP routes learned from EBGP

  C. it is not changed for IGBP routes learned from EBGP

  D. it is Changed by default when sent across EBGP sessions

  Correct Answer: CD

• Question 17:

  Your enterprise network is providing layer 2 connectivity between remote-sites using Q-in-Q tunneling. A customer wants to ensure their connection through your network is also participating in their spanning free topology. In this scenario, which solution must be used?

  A. you must configure the Q in Q tunnel to use L2PT to tunnel STP packets

  B. you must configure the same isolation ID on both sides of the tunnel

  C. you must configure spanning tree on the interfaces connected to the customers sites

  D. you must configure spanning tree to tunnel packets

  Correct Answer: A

• Question 18:

  You have certainly implemented the configuration shown in the exhibit. After committing these changes, the community devices connected to AS-1 are not able to communicate with the appropriate community devices connected to AS-2. 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 AS2 switches

  B. You must configure the ge-0/0/10 interface on AS1 AS THE VPLAN on both switches

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

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

  Correct Answer: D

• Question 19:

  Which two statements are correct about using LLDP on junos devices? (Choose two)

  A. LLDP operates on layer 2 and layer 3 interfaces

  B. LLDP can interoperate with the cisco discovery protocol CDP

  C. LLDP is enabled on all devices by default

  D. LLDP operates on layer 2 interfaces

  Correct Answer: AC

• Question 20:

  Your layer two network contains 500 unique VLAN IDS .you are asked to ensure that your VLANS Are load balanced between two root bridges ,but you are only allowed to have two spanning tree instances within your network. Which spanning tree protocol should you use in the scenario?

  A. VSTP

  B. RSTP

  C. MSTP

  D. STP

  Correct Answer: C