To exit from the current shell what command can be given?

Which of the following commands can create an empty file or update the last mopdified timestamp for an existing file?

Which of the following daemons can be used to synchronize the time between a number of Linux servers and workstations on a network with a clock source on the Internet?

Which of the following commands will create a symbolic link named bar.txt to an original file named foo.txt 

Which of the following commands will return the count of the number of lines in a file named letter.csv?

Dave runs uname at the command line trying to find out what kernel version the system is running. However, it doesn’t give him all the information he needs. He knows there is an option that can be used to display the kernel version. How can he find out which option to use?

Which of the following can be used to show the block devices on a Linux system? (Choose two.)

The core component of the GUI for Linux is known as _______

Which of the following commands will return one result of where the vim binary executable is located? (Choose two.)

Chebyshev’s Theorem is used on Normal Distributions only.