Previously, IPv6 specified that interface identifiers followed which format, which specifies a unique 64-bit interface identifier for each interface?

State which of the following are true and which are false. If a statement is false, explain why.

1) When passing a non-const argument to a const function, the const_cast operator should be used to cast away the “const-ness” of the function. 2) A mutable data member cannot be modified in a const member function. 3) namespaces are guaranteed to be unique. 4) Like class bodies, namespace bodies also end in semicolons. 5) namespaces cannot have namespaces as members.

Why should public e-mail client computer systems never be configured to save an e-mail password?

What will be an ideal response?