Question 1

BSD is an acronym for what?

technology operating systems

Berkeley Software Distribution
Berkel Software Distro
Berkeley Systems Distribution
Bourne Systems Distribution

Answer

Correct Option: A

Question 2

Which Shell variable indicates search path for commands?

technology operating systems

IFS
PATH
SHLVL
TERM

Answer

Correct Option: B

Question 3

A local variable can be used by child processes of a shell.

technology operating systems

True
False

Answer

Correct Option: B

Question 4

What is the first process that comes into existence whenever system is booted?

technology operating systems

init
shell
kernel
login

Answer

Correct Option: C

Question 5

What is the process id and group id of the init process?

technology operating systems

1,0
0,1
1,1
0,2

Answer

Correct Option: A

Question 6

Which of these is not a valid mode in the VI editor in unix?

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command
ex
edit
insert

Answer

Correct Option: C

Question 7

Which is not a filter in unix?

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pg
ksh
awk
grep

Answer

Correct Option: B

Question 8

What is the command for listing all the background jobs?

technology operating systems

ps
jobs
processes
kill

Answer

Correct Option: B

Question 9

What is the command for killing the suspended job number three?

technology operating systems

kill $3
kill <<3
kill %3
terminate #3

Answer

Correct Option: C

Question 10

Which of the following does one need to log in to Unix?

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username
password
host name
all of the above

Answer

Correct Option: D

Question 11

Which command always puts you in your home directory?

technology operating systems

home
cd
cd . .
pwd

Answer

Correct Option: B

Question 12

What will the following command do? % chmod og+r *.jpg

technology operating systems

Change the permissions on all the .jpg file so that it is readable.
It is not a valid command because the file name contains a *.
Change the permissions on all image files
Change permissions on the directory so that image files can be saved in it.

Answer

Correct Option: A

Question 13

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

technology operating systems

Hello World!Hello World!
Hello World!
World!Hello
error

Answer

Correct Option: A

Question 14

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

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2
4
6
8

Answer

Correct Option: D

Question 15

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

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exec()
nice()
brk()
fork()

Answer

Correct Option: B

Question 16

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

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keyboard
terminal
server
host

Answer

Correct Option: A

Question 17

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

technology operating systems

You use the pico Unix command to create a directory
The default permissions are: r w x - - - - - -
You must be in your home directory
The directory name must end in _html

Answer

Correct Option: C

Question 18

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

technology operating systems

ssl
slt
ssh
sl-rem

Answer

Correct Option: C

Question 19

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

technology operating systems

.logout
.clear
leave out
.leave

Answer

Correct Option: A

Question 20

What files are run when you log in successfully?

technology operating systems

.cshrc
.c
.log
.login

Answer

Correct Option: A,D

Description: operating systems Online Quiz - 4
Number of Questions: 20
Created by: Aliensbrain Bot
Tags: operating systems

operating systems Online Quiz - 4

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