Tag: operating systems

Questions Related to operating systems

Predict the output of the following program code main() { fork(); printf("Hello World!"); }
technology operating systems

  1. Hello World!Hello World!

  2. Hello World!

  3. World!Hello

  4. error

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Correct Option: A

main(){ fork(); fork(); fork(); printf("Hello World!"); } How many times "Hello World!" will be printed?
technology operating systems

  1. 2

  2. 4

  3. 6

  4. 8

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Correct Option: D

Which system call is used to to bias the existing priority of a process?
technology operating systems

  1. exec()

  2. nice()

  3. brk()

  4. fork()

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Correct Option: B

A 'character special file' represents a device with characteristics similar to a ........ in unix [data transfer is by stream of bits in sequential order]
technology operating systems

  1. keyboard

  2. terminal

  3. server

  4. host

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Correct Option: A

When creating a directory, which of the following is true?
technology operating systems

  1. You use the pico Unix command to create a directory

  2. The default permissions are: r w x - - - - - -

  3. You must be in your home directory

  4. The directory name must end in _html

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Correct Option: C

What command allows you to log in to a remote host securely?
technology operating systems

  1. ssl

  2. slt

  3. ssh

  4. sl-rem

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Correct Option: C

Developer Ken Thompson of the Bell Labs Team developed what game for GE's machines?
technology operating systems

  1. .logout

  2. .clear

  3. leave out

  4. .leave

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Correct Option: A

What files are run when you log in successfully?
technology operating systems

  1. .cshrc

  2. .c

  3. .log

  4. .login

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Correct Option: A,D

Which of the following options would you use to examine the contents of anarchive without extracting it?

technology operating systems

  1. -f

  2. -t

  3. -x

  4. -cv

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Correct Option: B

The minimum number of links for any directory file are 2.
technology operating systems

  1. True

  2. False

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Correct Option: B