Unix Programming sample placement test questions – Unix OS Programming Sample Employment Test Questions multiple choice type / objective type for Verizon India campus placement paper

Section I – Unix OS Programming MCQ / Multiple choice questions for Written Technical / Aptitude Test

1) works as a command interpretor

A) Hardware B) Kernal C) Shell D) CPU

2) The major no for a floppy disk device is
A) 1 B) 3 C) 2 D) 4

3) chown
A) Changes the mode of operation to kernel mode
B) Creates a thread
C) Changes the users and/or group ownership of each given file
D) Creates a child process

4) lilo
A) Uninstalls the boot loader
B) Installs the boot loader
C) Is a login utility
D) Invokes a daemon to logoff

5) netdevice
A) Provides low level access to Linux network devices
B) Provides low level access to Linux storage devices
C) Provides an interface to communicate with graphic devices
D) None of the other option listed for this question

6) The process which terminates before the parent process exits, is called as
A) Zombie
B) Orphan
C) Child
D) None of the other option listed for this question

7) Context switch means
A) Kernel switches from executing one process to another.
B) Process switches from kernel mode to user mode.
C) Process switches from user mode to kernel mode.
D) None of the other option listed for this question

8) The following socket provides two way, sequenced, reliable and unduplicated flow of data with no record boundaries.
A) Sequential packet socket
B) Datagram socket
C) Stream socket
D) Raw socket

9) Identify the point(s) that is not true w.r.t. signals
A) Signals are software generated interrupts that are sent to a process when an event happens
B) Signal delivery is analogous to hardware interrupts in that a signal can be blocked from being delivered in the future.
C) Most signals are synchronous by nature.
D) Most signal cause termination of the receiving process if no action is taken by the process in response to the signal.

10) Identify the point(s) that is true wrt Semaphore
A) Only one process at a time can update a semaphore.
B) All the other options listed for this question
C) They are often used to monitor and control the availability of system resources such as shared memory segments.
D) Is a process with exclusive use of a semaphore terminates abnormally and fails to undo the operation or free the semaphore, the semaphore stays locked in the state the process left it.

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