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Exam 9: Managing Linux Processes

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Question 1

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​Match each correct item with the statement below.​​​ a.​at command b.background command​ c.​child process d.cron table​ e.​daemon process f.​forking g.​parent process h.​process ID (PID) i.​time slice j.trapping -​A process that was started by another process.

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Question 2

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On a Fedora based system, where are the shell environment and scheduled commands for at stored?​

A) ​/var/spool/cron/atjobs
B) ​/var/spool/at
C) ​/var/run/at
D) /var/run/cron/at​

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Question 3

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Which of the following is not one of the three main types of Linux commands?​

Describe the system cron table. How it is organized, and what information may be contained within it?

What command below is used to display the lineage of a process by tracing its PPIDs until the init daemon?​

​Match each correct item with the statement below.​​​ a.​at command b.background command​ c.​child process d.cron table​ e.​daemon process f.​forking g.​parent process h.​process ID (PID) i.​time slice j.trapping -​The act of creating a new BASH shell child process from a parent BASH shell process.

In the output of the ps -l command, what column is the most valuable to systems administrators because it indicates what the process is currently doing?

​Match each correct item with the statement below.​​​ a.​at command b.background command​ c.​child process d.cron table​ e.​daemon process f.​forking g.​parent process h.​process ID (PID) i.​time slice j.trapping -A file specifying tasks to be run by the cron daemon​

What character, when appended to a command, causes the command to be run in the background?

The killall command uses the PID to kill a process.

What signal name and number function as the absolute kill signal, and when issued, forces the Linux kernel to stop executing the process by sending the process's resources to /dev/null?​

A(n) ____________________ refers to a program that is running in memory and on the CPU.

Processes are started with what nice value by default?

What kill signal and number can be used to send an interrupt signal to a process, and is the same as using the Ctrl+c combination to kill a running process?​

After a process has been started, you can change its priority by using the renice command.

In a cron table entry, what field specifies the absolute pathname to a command that is to be executed?

​What two ps options can be used to display a full list of information about each process, and a long list of information about each process?

What can be used on a Linux system to trace the lineage of each child process?​

Which kill signal terminates a process by taking the process information in memory and saving it to a file called core on the hard disk in the current working directory?

When there are multiple background processes executing in the shell, the jobs command indicates the most recent one with which symbol?