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Oracle Enterprise Linux: Fundamentals Sample Questions:

1. Identify the program that runs with the real and effective UID and GID of the switched user when you switch from one user to another using su command.

A) the id command
B) the chroot command
C) the login command
D) an interactive shell
E) a logout script

2. Match the following variables available to the user that are set internally by the shell, with their descriptions:
1) $1 - $9 a) process ID of the shell 2) $* b) the string containing all the arguments to the shell 3) $? c) process ID of the last command run in the background 4) $$ d) positional parameters 5) $! e) exit status of the most recently executed command

A) 1-d, 2-b, 3-e, 4-a, 5-c
B) 1-d, 2-a, 3-e, 4-b, 5-c
C) 1-d, 2-e, 3-a, 4-b, 5-e
D) 1-d, 2-a, 3-c, 4-b, 5-e

3. Which statements are true about a process? (Choose all that apply.)

A) It does not inherit the environment from the parent process that spawns it.
B) Each process will normally be associated with the UID and GID of the user that launched the program.
C) It uses only RAM irrespective of the amount of memory available in the system.
D) It is associated with a Process ID (PID).
E) It is associated with a nice value.

4. The user smith wants to display the total number of lines that are 4 characters (letters and digits) long or more from the file1.txt file. Which regular expression or command should smith use?

A) egrep "^[[:alpha:]]{4,}$" file1.txt | wc -w
B) egrep "^[[:alnum:]]{4,}$" file1.txt | wc -I
C) egrep "^[[:alnum:]]{4,}$" file1.txt | wc -c
D) egrep "^[[:alpha:]]{4,}V file1.txt | wc -I

5. Match the following arguments with their actions when used with the find command:
1) -print a) Allows a command to be run against each matching file 2) -Is b) Is the default action and displays matches 3) -exec c) Displays full details on matches 4) -ok d) Can be used when you want a confirmation prompt

A) 1-b, 2-a, 3-d, 4-c
B) 1-c, 2-d, 3-a, 4-b
C) 1-b, 2-c, 3-a, 4-d
D) 1-c, 2-a, 3-b, 4-d

Solutions: