Router HW1 exists in the carrier HW's network as an MPLSLSR router. The router receives a packet carrying a label, but the label entry does not exist in its LFIB.
So how does the router handle that message?

• A.Router HW1 uses LDP to create an LSP and creates a new path in LFIB for the label carried in the message
• B.Router HW1 drops the message
• C.Router HW1 strips off the label and looks for the FIB using the P destination address
• D.Router HW1 will forward the message with the default label

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There is a concept of FEC-Forwarding Equivalence Class in MPLS, so what criteria can FEC not allocate based on?

• A.Application Protocol
• B.Fragment offset
• C.Class of Service
• D.Destination Address

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Which of the following parameters should be modified to re-establish the is-IS neighbor relationship?

• A.Modify the send interval for the IlH of the IS-IS interface
• B.Modify the Level of the IS-IS interface
• C.Modify the Cost value of the IS-IS interface
• D.Modify the IP address of the IS-IS interface

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Regarding the description of the encapsulation format of the labels in MPLS, the correct one is?

• A.For Ethernet, PPP packets, the tag stack is like a "cushion layer", located between the layer 2 header and the data, and when there is a VLAN tag, the MPLS header is placed on the Ether head and VLANtag between
• B.label in the S field, lbit Used to identify whether the label is a bottom label, and a value of 1 indicates that it is the penultimate label
• C.The TTL field in the label has a similar meaning to the TTL (Time To Live) in the IP packet, and also has the effect of preventing loops
• D.The total length of an MPLS single tag is 4 bytes (32 bits).

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The following description of the BGP route reflector is? (Multiple choice questions).

• A.The Originator_ID attribute is generated by the Route Reflector (RR) for inter-cluster ring protection.
• B.The route learned from the client, all non-clients and clients published to this RR.
• C.Cluster_List is an optional non-staging property for ring protection within the cluster.
• D.A network of bones is divided into multiple reflection clusters, each of which configures the other RRs as non-clients, and establishes an IBGP full connection between the RRs.

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