Tag: operating systems

Questions Related to operating systems

  1. True

  2. False


Correct Option: A
Explanation:

To solve this question, the user needs to know what a multi-user operating system is. A multi-user operating system is an operating system that allows multiple users to access and use a single computer system simultaneously. This type of operating system is commonly used in large organizations and institutions where many users need access to the same resources.

The correct answer is:

A. True

  1. Preserve Working Directory

  2. Present Workspace Directive

  3. Preserve Workable Diskspace

  4. Present Working Directory


Correct Option: D

What command is used to change your password?

  1. pass -change

  2. changepword

  3. chpassword

  4. passwd


Correct Option: D

What is VI?

  1. An E-mail client

  2. A text editor

  3. The UNIX telnet service

  4. An FTP client


Correct Option: B

What will be the output of "echo this || echo that && echo other"?

  1. this

  2. that

  3. this that

  4. this other


Correct Option: D

AI Explanation

To answer this question, we need to understand the concept of logical operators in shell scripting.

In shell scripting, the || operator is the logical OR operator, and the && operator is the logical AND operator.

When the || operator is used, the command following it will only be executed if the preceding command fails or returns a non-zero exit status. On the other hand, when the && operator is used, the command following it will only be executed if the preceding command succeeds or returns a zero exit status.

Let's go through the given command step by step:

  1. echo this - This command will be executed and will output "this" to the console.

  2. echo that - This command will not be executed because the preceding command (echo this) succeeds and returns a zero exit status.

  3. echo other - This command will be executed and will output "other" to the console.

Therefore, the output of the given command "echo this || echo that && echo other" will be "this other".

The correct answer is option D) this other.