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CDAC-CCEE operating system Mock test 2 (15 questions, time 15 minutes)

1.
Which one of the following can not be scheduled by the kernel?

user level thread
kernel level thread
process
none of these
user level thread
2.
In multilevel feedback scheduling algorithm

a process can move to a different classified ready queue
classification of ready queue is permanent
processes are not classified into groups
none of the mentioned
a process can move to a different classified ready queue
3.
. Which process can be affected by other processes executing in the system? a) cooperating process b) c) d)

cooperating process
parent process
child process
init process
cooperating process
4.
Which process can be affected by other processes executing in the system?

cooperating process
parent process
child process
init process
cooperating process
5.
Message passing system allows processes to :

communicate with one another without resorting to shared data.
communicate with one another by resorting to shared data.
share data
name the recipient or sender of the message
communicate with one another without resorting to shared data.
6.
Message passing system allows processes to :

communicate with one another without resorting to shared data.
communicate with one another by resorting to shared data.
share data
name the recipient or sender of the message
communicate with one another without resorting to shared data.
7.
Message passing system allows processes to :

communicate with one another without resorting to shared data.
communicate with one another by resorting to shared data.
share data
name the recipient or sender of the message
communicate with one another without resorting to shared data.
8.
A form of code that uses more than one process and processor, possibly of different type, and that may on occasions have more than one process or processor active at the same time, is known as

multiprogramming
multi threading
broadcasting
time sharing
multi threading
9.
The table created by lexical analysis to describe all literals used in the source program, is

Terminal table
Literal table
Reductions
Identifier table
Literal table
10.
When several processes access the same data concurrently and the outcome of the execution depends on the particular order in which the access takes place, is called

essential condition
dynamic conditio
critical condition
race condition
race condition
11.
The request and release of resources are ___________.

command line statements
interrupts
special programs
system calls
system calls
12.
An un-interruptible unit is known as :

single
static
atomic
None of these
atomic
13.
Multithreaded programs are :

lesser prone to deadlocks
not at all prone to deadlocks
more prone to deadlocks
None of these
more prone to deadlocks
14.
The total time to prepare a disk drive mechanism for a block of data to be read from it is

latency
latency plus seek time
latency plus transmission time
latency plus seek time plus transmission time
latency plus seek time
15.
Hard real time operating system has ___ jitter than a soft real time operating system.

less
more
equal
None of these
less
16.
CPU fetches the instruction from memory according to the value of

instruction register
status register
program counter
None of these
program counter


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