The following statement about is the ISIS protocol LSP message is correct

• A.Reducing the minimum time interval for sending LSPs per port can speed up the diffusion of LSPs.
• B.By configuring an LSP-generated smart timer, the timer automatically adjusts the delay time based on the frequency of changes in routing information
• C.LSP fast diffusion feature, first diffuse less than the specified number of LSPs, to speed up the synchronization process of LSDB
• D.When the link status information increases, the message length of the LSP can be increased so that each LSP can carry more information.

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Is the following information about BGP4+ described correctly?

• A.BGP4 can use dampening commands to suppress oscillations on IBGP routes.
• B.Modifying the RouterID of BGP causes the BGP connection between routers to be re-established.
• C.BGP4+ does not support route auto-aggregate
• D.The Next Hop attribute in BGP4+ is represented by an IPv6 address, which can be the link-local address of the next hop.

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Regarding the Stub region in the OSPF protocol, the following statement is correct.

• A.Type7 LSA injection is not allowed in the Stub zone
• B.Virtual connections cannot traverse the Stub region
• C.Backbone zones cannot be configured as Stub zones
• D.ASBR cannot exist in the Stub zone

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Regarding the sliding window of TCP, what are the following descriptions that are enough to be wrong? ( Multiple choice question)

• A.The sender does not need to transmit messages of full window size
• B.Sliding window size can only be increased or remain unchanged
• C.After the retransmission timer times out, the sender has not received an acknowledgment and will retransmit unacknowledged data
• D.The receiver needs to acknowledge the sender's packet
• E.The sender declares the initial window size
• F.The TCP sliding window allows multiple packets to be sent before an acknowledgment is received

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Which of the following scenarios send free ARP messages?( Multiple choice questions).

• A.After the VRRP protocol master and standby role election is completed
• B.When a host connected to the switch issues a Ping message.
• C.The DHCP client receives an acknowledgment message from the server after it sends it
• D.When a new host configured with an IP address is connected to the network

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