Linux Processes Quiz

What command is used to report a snapshot of current processes?

• ls

• cat

• top

• ps

What does the 'S' state mean for a process?

• Sleeping

• Running

• Uninterruptible sleep

• Traced or stopped

What does the 'D' state indicate for a process?

• Running

• Sleeping

• Uninterruptible sleep

• Traced or stopped

What does the 'Z' state represent for a process?

• Running

• Uninterruptible sleep

• A defunct or 'zombie' process

• Sleeping

What does the 'l' character indicate in the process states?

• A high priority process

• In the foreground process group

• Has pages locked into memory

• Multi-threaded

What does the 'us' field represent in the %Cpu(s) section of the top program?

• % of time the CPU has been idle

• % of time the CPU is being used for system processes

• % of time the CPU has been waiting for I/O

• % of time the CPU is being used for user processes

What does the 'wa' field represent in the %Cpu(s) section of the top program?

• % of CPU time spent servicing soft interrupts

• % of time the CPU has been waiting for I/O

• % of CPU time spent servicing hard interrupts

• % of time the CPU is being used for user processes

What does the 'PR' column represent in the top program?

• Process ID

• Priority for the process

• Percentage of CPU time the process was using

• Name of the process or path to the command used to start the process

How can you interrupt a process?

• Ctrl + V

• Ctrl + C

• Ctrl + X

• Ctrl + Z

What does the 'VIRT' column represent in the top program?

• Total amount of virtual memory used by the process

• Process status

• Resident size in kb

• Shared memory size in kb