Full Test Bank Process Control Ch24 - Answer Key + Test Bank | Linux Essentials 1e Rothwell by William Rothwell. DOCX document preview.
Linux Essentials for Cybersecurity (Rothwell/Kinsey)
Chapter 24 Process Control
1) Which of the following could be considered a process?
A) A web browser
B) A command executed from a BASH shell
C) A program started by the operating system
D) All of the above
2) Which of the following commands is used to list processes that are running on the system?
A) ps
B) uptime
C) pgrep
D) top
3) Which of the following outputs of the ps command refers to the terminal window that started the process?
A) TIME
B) PID
C) TTY
D) CMD
4) When using the ps command with the –f option, which of the following outputs displays a value of 1 if it is currently executing code on the CPU, or a value of 0 if it is currently sleeping?
A) C
B) PPID
C) STIME
D) UID
5) Which of the following options for the pgrep command displays the process name and PID?
A) -u
B) -l
C) -G
D) -n
6) Which of the following commands displays process information that is updated on a regular basis (by default, every two seconds)?
A) ps
B) uptime
C) pgrep
D) top
7) In the output for the top command, which line displays CPU statistics since the last time top data was refreshed?
A) First line
B) Second line
C) Third line
D) Fourth line
8) Which command within the execution of the top command changes the default value from kilobytes to another value?
A) Z
B) s
C) E
D) k
9) Which command-line option for the top command sets the time between data refreshes?
A) -d
B) -u
C) -n
D) -t
10) Which of the following commands displays how long the system has been up for and its load average?
A) ps
B) uptime
C) pgrep
D) top
11) In the output for the uptime command, a load average of 2.0 on a single CPU system means __________ utilization (processes were often waiting for the CPU because it was busy).
A) 50%
B) 100%
C) 150%
D) 200%
12) Consistent utilization of a CPU over __________ indicates a problem and can cause servers to lag in response time.
A) 25%
B) 50%
C) 75%
D) 100%
13) Which of the following commands provide a good overview of how much memory is available and how much is currently used?
A) uptime
B) pgrep
C) free
D) top
14) Which option for the free command displays a line that shows the total of each column?
A) -t
B) -m
C) -k
D) -g
15) A process that is run __________ leaves the BASH shell available for the user to execute additional commands.
A) in the foreground
B) in the background
C) offline
D) online
16) Each job is assigned a job number, which uses the __________ syntax.
A) #job
B) #job_number
C) %job
D) %job_number
17) To pause a program that is running in the foreground, hold down the Ctrl key and press __________.
A) p
B) x
C) z
D) s
18) Which of the following commands can be used to change the state of a process, including to stop a process?
A) end
B) kill
C) stop
D) halt
19) Which of the following commands will execute a child process when the parent process is stopped?
A) pkill
B) hup
C) xkill
D) nohup
20) Which of the following commands is used to change the priority value of an existing process?
A) renice
B) high
C) nice
D) low
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Answer Key + Test Bank | Linux Essentials 1e Rothwell
By William Rothwell