QUESTION: 149

The Serial Number field of LS is used to detect expired and duplicate LSAs. The field is a 32bt signed integer, so the small serial number is Ox8000000

True
False

Answer(s): B

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QUESTION: 150

What kind of scenario can use AS-path-filter?( Multiple select).

A Filters routes received from BGP neighbors based on the AS PATH attribute carried by the route, such as the command peer X.x.x.x as path-filter import
The apply clause in Route policy
Filter routes sent to BGP neighbors based on the AS PATH attribute that the route carries. For example, the command peer x.x.x.x as path-filter export
The if-match clause in Route-policy

Answer(s): A,C,D

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QUESTION: 151

Regarding the domain-authentication-mode md5 hello command in the ISIS process, the correct explanation is ?

ISIS authentication cannot be applied in IPv6 environments.
This command is mainly used to make is the ISIS Hello message carry authentication information during the transmission process.
All router domain authentication methods of the same routing domain are MD5, the password is hello, and lS-IS SNP and LSP will spread normally.
outing domain authentication is primarily used to allow level-1 and Level-2 SNP and LSP messages to carry authentication information during delivery.

Answer(s): C

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