R4RIN – MCQs, Mock Tests | Unix/Lunux Linux Mcqs Questions Set 1

To increase the response time and throughput, the kernel minimizes the frequency of disk access by keeping a pool of internal data buffer called

1. Pooling
2. Spooling
3. Buffer cache
4. Swapping

✅ Correct Answer: 3

At start of process execution, STDOUT & STDERR

1. Point to current terminal device
2. Are closed
3. Point to special files on the system
4. None of the mentioned

✅ Correct Answer: 1

wtmp and utmp files contain:

1. Temporary system data
2. User login-logout log
3. The users command execution log
4. The users su and sudo attempts

✅ Correct Answer: 2

Which is the core of the operating system?

1. Shell
2. Kernel
3. Commands
4. Script

✅ Correct Answer: 2

ILP32 stands for

1. 32 bit Integer, Long & Pointer
2. 32 bit Integrated Long & Pointer
3. 32 bit Intelligent Long & Pointer
4. 32 bit Long & Pointer

✅ Correct Answer: 1

Single Unix Specification Version 2 provides enhanced support for

1. 16 bit Unix
2. 32 bit Unix
3. 64 bit Unix
4. 8 bit Unix

✅ Correct Answer: 3

Which among the following interacts directly with system hardware?

1. Shell
2. Commands
3. Kernel
4. Applications

✅ Correct Answer: 3

Applications communicate with kernel by using:

1. System Calls
2. C Programs
3. Shell Script
4. Shell

✅ Correct Answer: 1

Solaris is the name of a flavor of UNIX from

1. HP
2. IBM
3. Digital Equipment Corp
4. Sun Microsystems

✅ Correct Answer: 4

Which of the following is NOT a UNIX variant ?

1. Solaris
2. AIX
3. IRIX
4. AS400

✅ Correct Answer: 4

The system calls in UNIX is written using which language

1. C
2. C++
3. Assembly Language
4. Fortran

✅ Correct Answer: 1

Which of the following enables multi-tasking in UNIX?

1. Time Sharing
2. Multi programming
3. Multi user
4. Modularity

✅ Correct Answer: 1

Which of the following is considered as the super daemon in Unix?

1. sysinit
2. init
3. inetd
4. proc

✅ Correct Answer: 2

Unix is which kind of Operating System?

1. Multi User
2. Multi Processes
3. Multi Tasking
4. All of the mentioned

✅ Correct Answer: 4

SVR4 stands for?

1. Standard Version Release 4
2. System Version Release 4
3. Standard Five Release 4
4. System Five Release 4

✅ Correct Answer: 4

Lp0 device file is used to access:

1. Floppy
2. Cdrom
3. Printer
4. Tape drive

✅ Correct Answer: 3

Syntax of any Unix command is:

1. command [options] [arguments].
2. command options [arguments].
3. command [options] [arguments].
4. command options arguments

✅ Correct Answer: 1

SVR4 was developed by

1. Sun Microsystems
2. AT&T
3. University of Berkeley
4. Sun and AT&T jointly

✅ Correct Answer: 4

Which of these is not a Unix Flavor?

1. BSD
2. MAC
3. AIX
4. IRIX

✅ Correct Answer: 2

Which of the following statement is FALSE ?

1. Unix supports multiple users
2. Linux is an open source operating system and the source code is shared
3. Shell takes care of inter process communication
4. Shell provides the feature of I/O Redirection

✅ Correct Answer: 3

Which of the following UNIX flavor is from IBM?

1. BSD
2. Solaris
3. HP-UX
4. AIX

✅ Correct Answer: 4

x86-32 uses which programming model?

1. IP16
2. IP32
3. ILP16
4. ILP32

✅ Correct Answer: 4

Which among the following is used to write small programs to control Unix functionalities?

1. Shell Commands
2. Shell Script
3. Filters
4. C Language

✅ Correct Answer: 2

What control character signals the end of the input file?

1. ctrl + a
2. ctrl + b
3. ctrl + c
4. ctrl + d

✅ Correct Answer: 4

How do you get help about the command cp?

1. help cp
2. man cp
3. cd ?
4. none of the mentioned

✅ Correct Answer: 2

The dmesg command

1. Shows user login logoff attempts
2. Shows the syslog file for info messages
3. kernel log messages
4. Shows the daemon log messages

✅ Correct Answer: 3

The command mknod myfifo b 4 16

1. Will create a block device if user is root
2. Will create a block device for all users
3. Will create a FIFO if user is not root
4. None of the mentioned

✅ Correct Answer: 1

Which command is used to set terminal IO characteristic?

1. tty
2. ctty
3. ptty
4. stty

✅ Correct Answer: 4

Which command is used to record a user login session in a file

1. macro
2. read
3. script
4. none of the mentioned

✅ Correct Answer: 3

Which command is used to display the operating system name

1. os
2. unix
3. kernel
4. uname

✅ Correct Answer: 4

Which command is used to display the unix version

1. uname -r
2. uname -n
3. uname -t
4. kernel

✅ Correct Answer: 1

Which command is used to print a file

1. print
2. ptr
3. lpr
4. none of the mentioned

✅ Correct Answer: 3

Using which command you find resource limits to the session?

1. rlimit
2. ulimit
3. setrlimit
4. getrlimit

✅ Correct Answer: 2

Which option of ls command used to view file inode number

1. –l
2. -o
3. –a
4. –i

✅ Correct Answer: 4

Find / -name * will

1. List all files and directories recursively starting from /
2. List a file named * in /
3. List all files in / directory
4. List all files and directories in / directory

✅ Correct Answer: 1

Which command is used to display the octal value of the text

1. octal
2. text_oct
3. oct
4. od

✅ Correct Answer: 4

Which command is used to view compressed text file contents

1. cat
2. type
3. zcat
4. print

✅ Correct Answer: 3

Which command changes a files group owner

1. cgrp
2. chgrp
3. change
4. group

✅ Correct Answer: 2

Which command is used to extract intermediate result in a pipeline

1. tee
2. extract
3. exec
4. none of the mentioned

✅ Correct Answer: 1

Which command is used to extract a column from a text file

1. paste
2. get
3. cut
4. tar

✅ Correct Answer: 3

Which command is used to display disk consumption of a specific directory

1. du
2. ds
3. dd
4. dds

✅ Correct Answer: 1

Which command is used to perform backup in unix?

1. backup
2. cpio
3. zip
4. gzip

✅ Correct Answer: 2

Which command creates an empty file if file does not exist?

1. cat
2. touch
3. ed
4. read

✅ Correct Answer: 2

Which option of rm command is used to remove a directory with all its subdirectories

1. –b
2. –o
3. –p
4. –r

✅ Correct Answer: 4

Which command is used to identify file type?

1. Type
2. File
3. Finfo
4. Info

✅ Correct Answer: 2

Command used to determine the path of an executable file is

1. which
2. where
3. wexec
4. what

✅ Correct Answer: 1

Command used to count number of character in a file is

1. grep
2. wc
3. count
4. cut

✅ Correct Answer: 2

Which of these commands could you use to show one page of output at a time?

1. less
2. sed
3. pause
4. grep

✅ Correct Answer: 1

Which commands will give you information about how much disk space each file in the current directory uses?

1. ls -l
2. Is -la
3. du
4. ls -a

✅ Correct Answer: 3

Which of the following command output contains userid?

1. ls
2. help
3. date
4. ls –l

✅ Correct Answer: 4