Session Review

Question 1 (103.5-021 / short_answer)

Which command kills all running sleep processes by name?

Status: Unanswered

Your Answer:

Accepted Answer(s):
killall sleep

Explanation:
The lesson gives killall sleep as the example for killing multiple instances of a process [1].

Question 2 (103.5-017 / multiple_choice)

Which ps command displays only the user and command name columns?

Status: Unanswered

Your Answer:

Options:

• ps o user,comm
• ps aux
• ps -p user,comm
• ps o user,%cpu,cmd

Explanation:
The lesson gives ps o user,comm as the command that shows only the user and the program names [1].

Question 3 (103.5-001 / multiple_choice)

Which symbol sends a command to run in the background when appended to the command line?

Status: Unanswered

Your Answer:

Options:

• |
• &
• ;
• >

Explanation:
The objective explicitly includes the & operator, and jobs are created by sending processes to the background [1].

Question 4 (103.5-024 / short_answer)

Which top command-line option sorts processes by memory usage at startup?

Status: Unanswered

Your Answer:

Accepted Answer(s):
top -o %MEM

Explanation:
The lesson gives top -o %MEM to launch top sorted by memory usage [1].

Question 5 (103.5-023 / short_answer)

Which ps command shows the user, memory percentage, CPU percentage and full command columns?

Status: Unanswered

Your Answer:

Accepted Answer(s):
ps o user,%mem,%cpu,cmd

Explanation:
The lesson gives ps o user,%mem,%cpu,cmd as the required command [1].

Question 6 (103.5-013 / multiple_choice)

Which command displays how long the system has been running, number of users, and load averages?

Status: Unanswered

Your Answer:

Options:

• uptime
• free
• watch
• jobs

Explanation:
The lesson command list defines uptime as displaying how long the system has been running, the number of users and the load average [1].

Question 7 (103.5-006 / multiple_choice)

Which command shows a dynamic, continuously updating view of running processes?

Status: Unanswered

Your Answer:

Options:

• ps
• top
• pgrep
• watch

Explanation:
The summary states that top displays output dynamically and keeps updating constantly [1].

Question 8 (103.5-011 / multiple_choice)

If no signal is explicitly provided, what signal do kill, pkill, and killall send by default?

Status: Unanswered

Your Answer:

Options:

• SIGKILL
• SIGSTOP
• SIGTERM
• SIGHUP

Explanation:
The lesson states that if no signal is provided, the default signal sent is SIGTERM [1].

Question 9 (103.5-002 / multiple_choice)

Which command lists active jobs and their status in the current shell?

Status: Unanswered

Your Answer:

Options:

• ps
• jobs
• top
• free

Explanation:
The lesson command list defines jobs as displaying active jobs and their status [1].

Question 10 (103.5-025 / short_answer)

Which command periodically runs uptime so you can monitor load average changes over time?

Status: Unanswered

Your Answer:

Accepted Answer(s):
watch uptime

Explanation:
The lesson uses watch uptime as the example of monitoring load average changes over time [1].