Users hope to be able to make the router forward and select messages according to their own defined policies on the basis of traditional route forwarding, and can adopt policy routing, and the following description of policy routing is incorrect

• A.Policy Routing can set the next hop IP address
• B.Policy-based routing can be used to match message lengths
• C.Policy Routing cannot be set in the next statement DSCP
• D.Policy Routing cannot be used to set IP precedence

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MPLS is called multiprotocol label switching, and with respect to label descriptions in MPLS, the correct one is ?( Multiple select).

• A.The MPLS system has a variety of label publishing protocols, such as LDP is a label publishing protocol
• B.MPLS supports single-layer tags as well as multi-tier tags
• C.A tag is a fixed-length, locally only meaningful identifier that uniquely identifies the FEC to which a group belongs
• D.The label is carried by the head of the MPLS message and has a global significance, that is, the label value of all routers cannot repeat

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SSH uses asymmetric encryption algorithms AES and DES to achieve security for data transmission, and uses HMAC to ensure the complete integrity of integer data

• A.FALSE
• B.TRUE

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OSPFv3 uses the same route advertisement method as OSPFv2: advertising is done through the network command in the OSPFv3 area view.

• A.TRUE
• B.False

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The network administrator is ready to use the 6to4 automatic tunnel to carry IPv6 data on the IPv4 network, and the IPv4 address of the router interface is 1381485210, so the corresponding tunnel address is
2001:8a0e:55d2:1:230:65ff:fe2:9a6?

• A.True
• B.False

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