JN0-648 Online Practice Questions and Answers

What are three well-known mandatory BGP attributes? (Choose three.)

A. MED

B. AS-path

C. origin

D. next-hop

E. community

You have an IPv4 multicast network configured as PIM-SM.

What must be done before replacing your static RP with auto-RP?

A. Enable sparse-dense mode on each of the routers in the network.

B. Configure auto-RP domains on each router in the network.

C. Configure each router in the network as a candidate BSR.

D. Enable each router in the network to forward multicast packets.

Click the Exhibit button.

Referring to the exhibit, a PIM-SM network is set up to enable communication between multicast devices. Which statement is true in this scenario?

A. After the formation of the shortest-path tree, a prune message is sent from R1 to R5.

B. After the formation of the shortest-path tree, a prune message is sent from R1 to R2.

C. After the formation of the shortest-path tree, a join message is sent from R5 to R1.

D. After the formation of the shortest-path tree, a join message is sent from R1 to R5.

A BA classifier, input policer, and a multifield classifier are applied to an interface. In which order are these features processed?

A. policer –andgt; BA classifier –andgt; multifield classifier

B. policer –andgt; multifield classifier –andgt; BA classifier

C. multifield classifier –andgt; BA classifier –andgt; policer

D. BA classifier –andgt; multifield classifier –andgt; policer

Click the Exhibit button.

Which well-known community needs to be used to restrict 10.0.0.0/8 from being advertised to AS 2?

A. no-publish

B. no-advertise

C. no-export-subconfed

D. no-export

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

Click the Exhibit button.

Referring to the log shown in the exhibit, what is the problem with the OSPF adjacency establishment?

A. There is an MD5 authentication mismatch.

B. The OSPF database description packet is malformed.

C. The interface IP addresses on the subnet are duplicates.

D. The referenced IP address does not exist on the network segment.

Click the Exhibit button.

YourNet is learning the 210.210.40.0/24 route from Provider A and Provider B. YourNet would like to forward traffic destined to the 210.210.40.0/24 network using Provider B.

Referring to the exhibit, how would you accomplish this task?

A. Add the well-known no-export community to the routes learned through R2.

B. Add the well-known no-export community to the routes learned through R1.

C. Apply an export policy to R2's IBGP peers to set a higher local preference.

D. Apply an export policy to R1's IBGP peers to set a higher local preference.

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.

You are deploying IP phones to a customer site. The IP phones will be installed to share a common access port with the user's desktop computer. You are required to provide a mechanism to place user data traffic and voice traffic in different VLANs for class-of-service application.

How would you implement this solution?

A. Configure flexible VLAN tagging on the user ports with the data and voice VLANs as members.

B. Apply a multifield classifier on the access ports that assigns voice packets to the assured-forwarding class, based on the IP phone manufacturer's MAC OUI.

C. Configure the IP phones to label voice traffic with the DSCP of code point and apply a BA classifier to the access ports to classify voice traffic.

D. Configure VLAN tagging on the IP phones and use the voice VLAN feature on the access ports to assign tagged frames to the voice VLAN and untagged frames to a data VLAN.