Which of the following commands shows block devices, including their major and minor numbers, on a system which are located in the /sys/block directory?

Which of the following commands will shut down a Linux system? (Choose all that apply.)

Javier wants to rename a directory for a project that he has been working on. Which command will perform that action?

The ls -l command allows you to view permissions for a file, if there is a file with a symbolic link, what will appear in the permissions?

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?