Juniper JN0-648 Online Practice Questions and Exam Preparation

Juniper JN0-648 Online Questions & Answers

• Question 71:

  Which two statements are true regarding bidirectional PIM? (Choose two.)

  A. Forwarding paths can be suboptimal.
  B. Devices only store group specific entries.
  C. It uses multicast tunneling to forward traffic.
  D. It eliminates the need for an RP.
  A. Forwarding paths can be suboptimal.
  B. Devices only store group specific entries.

• Question 72:

  Packets enter a Juniper device and are classified as best effort. During the processing of the packet, the classification of the packets is changed to expedited forwarding by a multi-field classifier. The device is using the default CoS policies. Which statement is true in this scenario?

  A. The packet is forwarded according to the original packet classification, and the DSCP bits do not change.
  B. The packet is forwarded according to the new packet classification, and the DSCP bits are rewritten to the new class.
  C. The packet is forwarded according to the new packet classification, and the DSCP bits do not change.
  D. The packet is forwarded according to the original packet classification, and the DSCP bits are rewritten to the new class.
  C. The packet is forwarded according to the new packet classification, and the DSCP bits do not change.

• Question 73:

  Your company has expanded into office space across the street. The new office space has a single Ethernet connection connected to an unmanaged switch. You must sort traffic based on the IP address into different VLANs once the traffic arrives on your EX Series switches.

  Which mechanism would you use to accomplish this task?

  A. MVRP
  B. filter-based VLANs
  C. Q-in-Q tunneling
  D. dynamic VLANs
  B. filter-based VLANs

• Question 74:

  Click the Exhibit button.

  

  A router is attempting to form an OSPF neighborship with another router. However, the OSPF neighborship fails to establish completely. Referring to the exhibit, what is the problem?

  A. There is an interface type mismatch.
  B. There is an OSPF area mismatch.
  C. There is an interface subnet mask mismatch.
  D. There is an interface MTU mismatch.
  D. There is an interface MTU mismatch.

• Question 75:

  Click the Exhibit button.

  

  Your IS-IS adjacency is not established as shown in the exhibit. What is the problem?

  A. There is an MTU mismatch.
  B. There is an invalid IPv6 router ID.
  C. There is an area mismatch.
  D. There is an invalid IPv4 router ID.
  C. There is an area mismatch.

• Question 76:

  Which BGP message type contains NLRI information?

  A. notification
  B. keepalive
  C. update
  D. open
  C. update

• Question 77:

  You are currently using VLAN IDs 2 through 300 within your Layer 2 domain and you need to configure VSTP to prevent loops. You must ensure that all VLANs are loop free. In this scenario, which statement is correct?

  A. You must ensure that the VLANs are balanced between two different root bridges.
  B. You must enable RSTP to account for all VLANs.
  C. You must ensure that the bridge priority is set to the lowest value on all switches in the Layer 2 domain.
  D. You must enable all VLANs, 2 through 300, under the VSTP configuration.
  D. You must enable all VLANs, 2 through 300, under the VSTP configuration.

• Question 78:

  When redistributing IGP routes into BGP, what information is used by default on Junos platforms to determine the BGP route's MED attribute value?

  A. the IGP Metric
  B. routing information base
  C. the IGP route preference
  D. route protocol source
  A. the IGP Metric

• Question 79:

  Click the Exhibit button.

  

  You are investigating reports of increased latency and discover that some routes cause customer traffic to traverse a route reflector instead of the optimal path. Referring to the exhibit, which configuration statement would solve the problem?

  A. delete protocols bgp group BGP-MESH peer-as
  B. set policy-options policy-statement NHS term BGP_ROUTES from external
  C. set protocols bgp group BGP-MESH import NHS
  D. delete protocols bgp group BGP-MESH export NHS
  B. set policy-options policy-statement NHS term BGP_ROUTES from external

• Question 80:

  Click the Exhibit button.

  

  Referring to the exhibit, which two statements are true with regards to deploying CoS? (Choose two.)

  A. You should apply MF classifiers on the LAN-facing interfaces of the routers.
  B. You should apply MF classifiers on the point-to-point interfaces of the routers.
  C. You should apply BA classifiers on the point-to-point interfaces of the routers.
  D. You should apply BA classifiers on the LAN-facing interfaces of the routers.
  A. You should apply MF classifiers on the LAN-facing interfaces of the routers.
  C. You should apply BA classifiers on the point-to-point interfaces of the routers.