As shown in the figure, R1 and R2 form a VRRP backup group 1. By executing the vrrp vrid 1 vitual-ip () command on R1, you can make it the IP address owner, let R1 be the Master and R2 as the Backup.

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The ABR in the OSPF stub area does not flood the fifth type LSA and the fourth type LSA into the stub area, and draws a default LSA to the stub area to guide how data packets reach the destination outside the AS

• A.TRUE
• B.FALSE

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For two routers running IS-IS, the adjacency relationship can be established only when the time interval of lH transmission is the same

• A.FALSE
• B.TRUE

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Using the authentication in BGP configuration, how to configure?

• A.All routers in the AS must use the same password
• B.All routers in the same AS must use the same password
• C.The same MD5 password must be used between a pair of BGP peers
• D.All BGP peers on a router must use the same password

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There are 4 port roles defined in RSTP, among which the part role values in the flags field of the Alternative port and Backup port in the STP packet are always 01.

• A.TRUE
• B.FALSE

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