MOD E03: Authentication & Authorization

Question 1

Which of the following are not one of the three basic Linux user accounts?

• Administrative User
• Authentication User
• Regular User
• Service Account

Answer 1

Authentication User

Question 2

Which type of account is defined as an account having the necessary privileges to perform standard tasks on a Linux computer?

• Administrative User
• Authentication User
• Regular User
• Service Account

Answer 2

Regular User

Question 3

Which type of account handles things such as mail, Apache, and printing?

Answer 3

Service account

Question 4

Local passwords are stored where?

(Hint: Full file path name required)

Answer 4

/etc/shadow

Question 5

Another name for a root account is what?

Answer 5

super user

Question 6

Passwords are encrypted and displayed as an incomprehensible string of characters known as a _________.

Answer 6

hash

Question 7

Of the following what is located in the /etc/shadow file?

• Contains a list of local users and their data
• Defines groups and associated accounts
• Contains encrypted passwords
• Contains executable binaries

Answer 7

Contains encrypted passwords

Question 8

What is the 3rd block in the /etc/passwd file?

• Username
• User ID
• GID
• User Info

Answer 8

User ID

Question 9

What is the 6th block in the /etc/passwd file?

• Password
• Shell
• User Info
• Home Dir

Answer 9

Home Dir

Question 10

What file, defined in this lesson, contains user information?

• /etc/shadow
• /etc/tmp
• /etc/passwd
• /etc/var

Answer 10

/etc/passwd

Question 11

What principle is applied to privileged accounts?

Answer 11

least

Question 12

Which of the following is not a safe way to manage password?

• require the password to be changed periodically
• reuse of old passwords
• require that they be of some level of complexity
• require the use of characters and symbols

Answer 12

reuse of old passwords

Question 13

What command is used to add a new user?

Answer 13

useradd

Question 14

What command can be utilized to add a user to the HOME_DIR?

Answer 14

useradd -d

Question 15

What command can be used to set passwords to expire?

Format is the full command.

Answer 15

sudo passwd -e

Question 16

What command can be utilized to delete an account along with files in the home directory of the users account?
(Format does not need to include account name)

Answer 16

userdel -r

Question 17

Where are the group names stored at?

• /home/user
• /etc/passwd
• /bin/chgrp
• • /etc/profile

Answer 17

/etc/passwd

Question 18

What command can be utilized to find out what user test, UID is?

• cd test
• ls test
• sudo test
• id test

Answer 18

id test

Question 19

A user is an entity, in a Linux operating system, that can manipulate files and perform several other operations.

[TRUE / FALSE]

Answer 19

TRUE

Question 20

When rights and permissions are assigned to a group, all user accounts that are part of the group inherit the same rights and permissions.

[TRUE / FALSE]

Answer 20

TRUE