Which of the following statements is true about the rel and href attributes of the element of an Atom?

Which attributes must be contained in the element of an Atom?

Which element indicates the default author of the feed of an Atom?

is not a required element of in an Atom.

Which elements are optional for an Atom's element?

For which element of an Atom, time zone is not a required content?

Which one is the default value of the rel attribute of an Atom's Link construct?

Which value must be considered for the mode attribute if it is not present in the Content construct of an Atom?

Which mode of operation is used by Atom processors while decrypting Atom Documents using AES-128?

The is an element of a ________ construct of an Atom.

Which elements are Common Atom Date constructs?