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Test your knowledge: The shell Quiz Answers

Question 1)
What is the shell?

• The command-line interpreter
• Information received by the operating system (OS) via the command line
• An instruction telling the computer to do something
• Data consisting of an ordered sequence of characters

Question 2)
After a user inputs a command into the shell, what can the shell return to the user? Select two answers.

• A request for user approval
• Output
• An error message
• A request for more input from the user

Question 3)
What is standard error in Linux?

• Information returned by the operating system through the shell
• Error messages returned by the operating system through the shell
• A Linux command that outputs a specified string of text
• Information received by the operating system via the command line

Question 4)
What is the difference between standard input and standard output?

• Standard input is sent to the Filesystem Hierarchy Standard (FHS). Standard output is sent from the FHS.
• Standard input is sent from the operating system. Standard output is sent to the operation system.
• Standard input is sent to the operating system. Standard output is sent from the operating system.
• Standard input is sent from the Filesystem Hierarchy Standard (FHS). Standard output is sent to the FHS.