The IPv6 site local address belongs to the ______ address type.

• A.Multicast
• B.Unicast
• C.Broadcast
• D.Anycast

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An enterprise network administrator needs to set a subnet mask to divide the Class C network 211.110.10.0 that he is responsible for into at least 10 subnets. How many subnet masks can be used for division? (multiple choice)

• A.27
• B.26
• C.28
• D.25
• E.29

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In the following statement about HDLC, what is wrong is ______. (Multiple choice)

• A.HDLC can run on the same/asynchronous link, so it has a wide range of applications.
• B.Any bit stream can be transparently transmitted on the HDLC link.
• C.The HDLC protocol is a bit-oriented transport layer protocol.
• D.The HDLC protocol uses a unified frame format, so both data messages and protocol messages are transmitted in standard format frames on the HDLC link.

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Router MSR-1 is interconnected with MSR-2 and MSR-3 respectively. Among them, there is a RIP route learned from MSR-2 to the destination network segment 120.10.12.0/24 in the routing table of MSR-1. It is 3; at this time, MSR-1 also receives a RIP route from MSR-3 that is still going to the destination network segment 120.10.12.0/24, and its Cost is 15, then ______.

• A.The routing table of MSR-1 is not updated, and the network segment route learned from MSR-2 is still retained
• B.The routing table of MSR-1 will be updated to the route learned from MSR-3 to the cost of 15.
• C.The routing table of MSR-1 will not be updated, because RIP routing with a Cost of 15 means unreliable routing, and RIP will not write it into its routing table
• D.The routing table of MSR-1 will be updated, because RIP routing with a Cost of 15 means that the network may have loops

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Which of the following statements about HDLC is correct is ______. (Multiple choice)

• A.HDLC can support IP address negotiation.
• B.The HDLC protocol adopts a unified frame format, so both data messages and protocol messages are transmitted in standard format frames on the HDLC link.
• C.The HDLC protocol is a bit-oriented data link layer protocol.
• D.HDLC can only run on asynchronous links.

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