1.
A
scheduling algorithm is fair
1 if no
process faces starvation
2 if a
process is starved, detect it and run it with high priority
3 if it
uses semaphores
4 only
if a queue is used for scheduling
Ans ) 1
2.
A
critical region
1 is a
piece of code which only one process executes at a time
2 is a
region prone to deadlock
3 is a
piece of code which only a finite number of processes execute
4 is
found only in Windows NT operation system
Ans ) 1
3.
Semaphore
can be used for solving __________.
1 Wait
& signal
2
Deadlock
3
Synchronization
4
Priority
Ans ) 3
4.
The
operating system of a computer serves as a software interface between the user
and the ________.
1
Hardware
2
Peripheral
3
Memory
4
Screen
Ans ) 1
5.
What
is the name of the software which deals with the running of the actual computer
and not with the programming problems?
1
Operating system
2
System program
3
Object program
4
Source program
Ans ) 2
6.
An
optimal scheduling algorithm in terms of minimizing the average waiting time of
a given set of processes is ________.
1 FCFS
scheduling algorithm
2 Round
robin scheduling algorithm
3 Shortest
job - first scheduling algorithm
4 None
of the above
Ans ) 3
7.
Real
time systems are ________.
1
Primarily used on mainframe computers
2 Used
for monitoring events as they occur
3 Used
for program development
4 Used
for real time interactive users
Ans ) 2
8.
Which
technique was introduced because a single job could not keep both the CPU and
the I/O devices busy?
1
Time-sharing
2
SPOOLing
3
Preemptive scheduling
4
Multiprogramming
Ans ) 4
9.
Inter
process communication can be done through __________.
1 Mails
2
Messages
3
System calls
4 Traps
Ans ) 2
10.
In
Priority Scheduling a priority number (integer) is associated with each
process. The CPU is allocated to the process with the highest priority
(smallest integer = highest priority). The problem of, Starvation ? low
priority processes may never execute, is resolved by __________.
1
Terminating the process.
2 Aging
3
Mutual Exclusion
4
Semaphore
Ans ) 2
11.
CPU
performance is measured through ________.
1
Throughput
2 MHz
3 Flaps
4 None
of the above
Ans ) 1
12.
PCB
=
1
Program Control Block
2
Process Control Block
3
Process Communication Block
4 None
of the above
Ans ) 2
13.
Software is a program that directs the overall
operation of the computer, facilitates its use and interacts with the user.
What are the different types of this software ?
1
Operating system
2
Language Compiler
3
Utilities
4 All
of the above
Ans ) 4
14.
A __________ is a software that manages the
time of a microprocessor to ensure that all time critical events are processed
as efficiently as possible. This software allows the system activities to be
divided into multiple independent elements called tasks.
1
Kernel
2 Shell
3
Processor
4 Device
Driver
Ans ) 1
15.
The
primary job of the operating system of a computer is to ________.
1
Command Resources
2
Manage Resources
3
Provide Utilities
4 Be
user friendly
Ans ) 2
No comments:
Post a Comment
Thank you for using this blog.