You can make a hierarchical directory structure under /root that
consists of one directory containing subdirectories by using cd and
mkdir
the mkdir command created the directories while the cd command changes which directory you're currently in
Answer:
The title of RFC 4890 is "Recommendations for Filtering ICMPv6 Messages in Firewalls" and it was published in 2007.
Explanation:
RFC 4890 is the memo that was published in 2007. This document is about the recommendations of filtering messages that are harmful and having security risk for Internet Control Message Protocol ICMP version 6.
In this document different types of risk associated ICMPv6 protocol while forwarding messages. This memo recommends filtering techniques to drop the harmful messages and make the communication secure.
