JN0-664 Service ProviderProfessional (JNCIP-SP) - Practice Questions

Question 4

Exhibit

You are running a service provider network and must transport a customer's IPv6 traffic across your IPv4-based MPLS network using BGP You have already configured mpis ipv6-tunneling on your PE routers.

Which two statements are correct about the BGP configuration in this scenario? (Choose two.)

Select all that apply, then click Submit answer.

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You must configure family inet6 labcled-unicast between PE routers.
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You must configure family inet6 unicaat between PE and CE routers.
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You must configure family inet6 add-path between PE and CE routers.
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You must configure family inet6 unicast between PE routers

Question 5

Exhibit

Referring to the exhibit, which three statements are correct about route 10 0 0.0/16 when using the default BGP advertisement rules'? (Choose three.)

Select all that apply, then click Submit answer.

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R1 will prepend AS 65531 when advertising 10 0.0 0/16 to R2.
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R1 will advertise 10.0.0.0/16 to R2 with 192 168 1 1 as the next hop.
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R2 will advertise 10.0.0.0/16 to R3 with 192.168.1 1 as the next hop
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R4 will advertise 10 0.0 0/16 to R6 with 172.16 1 1 as the next hop
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R2 will advertise 10.0.0.0/16 to R4 with 172.16.1.1 as the next hop

Question 6

An interface is configured with a behavior aggregate classifier and a multifield classifier How will the packet be processed when received on this interface?

Select an option, then click Submit answer.

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The packet will be discarded.
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The packet will be processed by the BA classifier first, then the MF classifier.
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The packet will be forwarded with no classification changes.
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The packet will be processed by the MF classifier first, then the BA classifier.

Reference / correct answer:

The packet will be forwarded with no classification changes.

behavior aggregate (BA) classifiers and multifield (MF) classifiers are two types of classifiers that are used to assign packets to a forwarding class and a loss priority based on different criteria. The forwarding class determines the output queue for a packet. The loss priority is used by a scheduler to control packet discard during periods of congestion.

A BA classifier maps packets to a forwarding class and a loss priority based on a fixed-length field in the packet header, such as DSCP, IP precedence, MPLS EXP, or IEEE 802.1p CoS bits. A BA classifier is computationally efficient and suitable for core devices that handle high traffic volumes. A BA classifier is useful if the traffic comes from a trusted source and the CoS value in the packet header is trusted.

An MF classifier maps packets to a forwarding class and a loss priority based on multiple fields in the packet header, such as source address, destination address, protocol type, port number, or VLAN ID. An MF classifier is more flexible and granular than a BA classifier and can match packets based on complex filter rules. An MF classifier is suitable for edge devices that need to classify traffic from untrusted sources or rewrite packet headers.

You can configure both a BA classifier and an MF classifier on an interface. If you do this, the BA classification is performed first and then the MF classification. If the two classification results conflict, the MF classification result overrides the BA classification result.

Based on this information, we can infer the following statements:

JN0-664 – Service ProviderProfessional (JNCIP-SP)