» Linux » Examen sur Linux » Examen 202 : Networking Administration » Section 4 » Question 8/20
8.Which of the following user names is valid?

Theresa Hadden
thadden
Theresa H
T.H.

Explanation: A Linux username is case sensitive and can not contain spaces or dots. ‘thadden’ is the only valid username of the answers given. If you try to create an account containing invalid character, you will get an error saying “invalid username”.

Incorrect Answers
A: The username cannot contain spaces.
C: The username cannot contain spaces.
D: The username cannot contain dots.

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