Tag: operating systems

Questions Related to operating systems

Which of the following commands is not a filter?
technology operating systems

  1. cat

  2. man

  3. pg

  4. head

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Correct Option: B

Which of the following is true?
technology operating systems

  1. UNIX is a widely used mail system

  2. UNIX is case sensitive

  3. UNIX has a graphical user interface

  4. All of the above are true

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Correct Option: D

What is inode?
technology operating systems

  1. File status indicator

  2. It is stored in both disk and memory and tracts file status

  3. There is one inode for each file on the system

  4. All the above

  5. None of the above

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Correct Option: D

Output of below code is: main() { fork(); fork(); fork(); printf("Hello"); }
technology operating systems

  1. "Hello" will be printed 3 times

  2. "Hello" will be printed 4 times

  3. "Hello" will be printed 8 times

  4. Error

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Correct Option: C

Which is the not valid state of Unix process?
technology operating systems

  1. Waiting

  2. stopped

  3. Zombie

  4. None

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Correct Option: D

Which command is used to change your password?
technology operating systems

  1. password

  2. pass

  3. passwd

  4. pwd

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Correct Option: C

Which command allows you to determine if a host is connected to the Internet?
technology operating systems

  1. ping

  2. cmd

  3. nalookup

  4. ls-la

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Correct Option: A

The fork() function is used to create a new process from an existing process.
technology operating systems

  1. True

  2. False

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Correct Option: A

A Map is an Array, which contains the addresses of the free space in the swap device that are allocatable resources.
technology operating systems

  1. True

  2. False

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Correct Option: A

Below command finds all of the files which have been accessed within the last 30 days. find / -type f -time -30
technology operating systems

  1. True

  2. False

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Correct Option: B