When the system doesn't know how to respond to a command, what is the result?1 pointStandard outputA request for additional resourcesStandard inputAn error message

Question 1What is the shell?1 pointAn instruction telling the computer to do somethingInformation received by the operating system (OS) via the command lineData consisting of an ordered sequence of charactersThe command-line interpreter2.Question 2After a user inputs a command into the shell, what can the shell return to the user? Select two answers.1 pointA request for more input from the userOutputA request for user approvalAn error message3.Question 3What is standard error in Linux?1 pointInformation returned by the operating system through the shellInformation received by the operating system via the command lineA Linux command that outputs a specified string of textError messages returned by the operating system through the shell4.Question 4What is the difference between standard input and standard output?1 pointStandard input is sent from the Filesystem Hierarchy Standard (FHS). Standard output is sent to the FHS.Standard input is sent to the operating system. Standard output is sent from the operating system.Standard input is sent from the operating system. Standard output is sent to the operation system.Standard input is sent to the Filesystem Hierarchy Standard (FHS). Standard output is sent from the FHS.

After a user inputs a command into the shell, what can the shell return to the user? Select two answers.1 pointA request for user approvalAn error messageA request for more input from the userOutput

Which of the following are communication methods with the shell? Select all that apply.1 pointStandard commandStandard outputStandard inputStandard error

What is standard error in Linux?1 pointError messages returned by the operating system through the shellA Linux command that outputs a specified string of textInformation received by the operating system via the command lineInformation returned by the operating system through the shell

What is the return value of the system call open if it fails?0-198