Which of the following is an Open message optional parameter?

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Multiple Choice

Which of the following is an Open message optional parameter?

Explanation:
Open messages establish a BGP session and can carry Optional Parameters. Among these, the Session Authentication parameter is the one designed to convey authentication data for the session, so it’s the correct choice. The other items belong to UPDATE messages: NLRI is the network information being advertised or withdrawn, and Next Hop indicates the next hop for those routes. The MD5 Path Attribute is not an Open message optional parameter; MD5-based security is typically handled at the TCP layer or through other security mechanisms, not as an Open optional parameter.

Open messages establish a BGP session and can carry Optional Parameters. Among these, the Session Authentication parameter is the one designed to convey authentication data for the session, so it’s the correct choice. The other items belong to UPDATE messages: NLRI is the network information being advertised or withdrawn, and Next Hop indicates the next hop for those routes. The MD5 Path Attribute is not an Open message optional parameter; MD5-based security is typically handled at the TCP layer or through other security mechanisms, not as an Open optional parameter.

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