As shown in the following topology, EBGP runs between AS100, AS200, AS300, and per relationships have been established between them. When As400 receives a BGP route to the network segment 1.1.1.1/32 from AS100, which of the following is the correct value of the AS_path attribute?

• A.10,200,300
• B.100,200,300,400 $
• C.400,300,200,100
• D.300,200,100

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Which of the following statements regarding CHAP authentication in the PPP protocol are true? (Choose three.)

• A.Authentication requires three-way handshake. Only the user name is transmitted on the network, not the password.
• B.If no user name is configured for the authenticated party, the password does not need to be configured on the interface of the authenticated party.
• C.The MD5 algorithm is used to calculate a hash based on the authentication sequence ID, a random number, and the key.
• D.The user name must be configured on the interface of the authenticated party.

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Which of the following statements regarding OSPFv3 Router-LSAs is true?

• A.The data part of a Router-LSA contains the interface IDs of the local router and its neighbors' router ID.
• B.When LS type in the LSA header is 0x0001, the data part of the LSAs is a Router-LSA.
• C.Similar to OSPFv2, the Option field exists in an LSA header rather than the data part of a Router-LSA.
• D.The data part of a Router-LSA contains the link-local address.

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The following is about reliability, describing LDP errors?

• A.The LDP FRR LSP LSP can also be generated from the mapping of the non-lowest hops as the privilege
  label, and the primary device is configured as the primary device. The table forwarding entry B.
  LDP IGP IGP LDP IGP is associated with the association. , guaranteed to be consistent with the path
• B.Hand-configured dynamic LDP FRR 32 LDP LSP policy is the default route to the backup device.
• C.LDP GR (Graceful Restart) MPLS uses the feature that the plane and the control plane are separated,
  and is forwarded when the device protocol is replaced by the restart or the primary or the reverse.
  No interruption.

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Route selection tools may have several items defined. To which of the following tools will the system automatically add a deny-any item following all the configured items? (Multiple Choice)

• A.AS-path -filter
• B.Route-policy
• C.Community-filter
• D.IP-prefix

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