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Question 376

SDN architecture mainly includes two interfaces: NBI northbound interface and SBI southbound interface.

A.FALSE
B.TRUE

Question 377

Which of the following descriptions about the Keepalive message in BGP is wrong?

A.The Keepalive message contains only one BGP data header
B.Keepalive messages are periodically sent between two BGP neighbors
C.By default, the Keepalive interval is 180 seconds
D.Keepalive messages are mainly used to maintain the connection between BGP peers

Question 378

Which of the following descriptions about IPv6 transition technology is correct?

A.Conversion technology is suitable for communication between pure IPv4 network and pure IPv6 network, which is convenient for network management and auditing
B.The principle of conversion technology is to rewrite the header of IPv6 into the header of IPv4, or rewrite the header of IPv4 into the header of IPv6. Using tunneling technology, IPv4 can be encapsulated in the IPv6 tunnel to achieve intercommunication, but the endpoint of the tunnel Need to support dual stack technology
C.IPv4/IPv6 dual-stack technology has hardware requirements for the device, and two network cards are required to run IPv4/IPv6 respectively

Question 379

Route summarization can effectively reduce the number of BGP routes. However, many parameters need to be properly set when configuring BGP route summarization. Otherwise, problems such as routing loops may occur.
Which of the following statements is false about BGP route summarization?

A.If the aggregate command with suppress-policy specified is run on a device, the device advertises only the specific routes that match the given routing policy.
B.If the aggregate command is run on a device, the device advertises both specific and summary routes.
C.If the summary automatic command is run on a device, the device summarizes subnet routes based on natural network segments.
D.If the aggregate command with detail-suppressed specified is run on a device, the device advertises only the summary route.

Question 380

Which of the following does not belong to IGP?

A.IS-IS
B.OSPF
C.BGP
D.RIP