MAGICAL WINDOWS -8
EXERCISE SOLUTION
A.
Choose
the correct answer.
1. Which software is needed to perform the
booting process?
(a)
Utility Software
(b)
Application Software
(c)
Operating System
(d) None of these
2. What kind of an operating system is
Windows?
(a)
Multiprocessing
(b)
Multitasking
(C)
(d) All of these
3. Which of these is not a System tool?
(a)
Disk Cleanup
(b)
System Restore
(c)
GUI
(d)
Disk
4. Examples of Mobile Operating System are
(a)
Windows Device
(b)
Windows Mobile
(c)
Windows Drivers
(d) All of these
5. The major layers of_________ are Shell,
Kernel and Device Drivers.
(a)
Operating System
(b)
Distributed System
(c)
Linux System
(d) Unix System
6. _______________has a number of system
tools which helps us to maintain the system.
(a)
WindowsXP
(b)
Windows98
(c)
Windows7
(d)
Windows8
B. Fill in the blanks.
1.
An Operating System (OS) is an
intermediary between the user and the hardware.
2. Without an operating system, a computer
is useless.
3. Mobile operating systems are Microsoft
Windows and Apple iOS' .
4. Hardware manufacturers all make drivers
and support of Operating System
5. MSDOS was one of the earliest operating
system to be developed.
6. Operating systems guarantee that
critical tasks complete on time.
7. Spooling refers to putting data of
various I/O jobs in a buffer.
C. State True or False.
1. The operating system may control the
hardware. - True
2. UNIX was developed in Bell Laboratories
in 1991. - False .
3. OS manages device communication via
their respective drivers. - True
4. Operating systems keep evolving after
the period of time. - True
5. Distributed systems are referred as
loosely coupled systems or distributed systems.- True
6. The Linux system picks and begins to
execute one of the job in the memory.- True
Answer in one or two words.
1. What is the most important software
that runs on a computer?
Ans
– Operating System
2. What are the most well-known operating
systems?
Ans-
Windows7,8,10, Linux,UNIX,MacOS
3. What is known as Time -sharing systems?
Ans-
Processor’s time which is shared among multiple users simultaneously is termed
as time-sharing.
4. What is DOS stand for?
Ans-
Disk Operating System
5. Which operating system is a single
operating system?
Ans-
MS-DoS
6. Who developed the UNIX and when?
Ans
– In 1969 by K Thompson and Dennis Ritchie
Answer
these questions in detail.
Why
operating system is needed in the computer system?
Ans-
It manages the computer's memory and
processes, as well as all of its software and hardware. It also allows you to
communicate with the computer without
knowing how to speak the computer's language.
What is Mobile Operating System?
Ans-
A mobile operating system, also called a mobile OS, is an operating system that
is specifically designed to run on mobile devices such as mobile phones,
smartphones, PDAs, tablet computers and other handheld devices.
What
are the advantages and disadvantages of an operating system?
Ans
- An advantage of an operating system: -
•
The operating system provides the interface between the user and the hardware.
•
It can be easily used because it has a graphical user interface, and new users
can run computers easily by this.
•
Accessing hardware without writing programs: – Operating system provides us the
facility to access hardware without writing programs.
•
Through this, we can share one data with a lot of users.
•
Through this, we can share resources such as
– Printer, Modems, Fax-machines, Players, etc
•
It can be easily updated.
A
disadvantage of an operating system: -
•
It is a bit difficult to run Linux compared to Windows due to user friendly.
•
Sometimes it does not support any hardware,
•
The risk of viruses in Mac OS is high.
•
Data loss: – Sometimes the operating system crashes due to which the user’s
data is destroyed
Write
all the functions of an operating system.
Ans-
Managing Resources: Programs that manage the resources of a computer such as
the printer, mouse, keyboard, memory and monitor.
Providing
User Interface: Graphical user interface (GUI) is something developers create
to allow users to easily click something without having to understand how or
why they clicked an icon. Each icon on a desktop represents code linking to the
spot in which the icon represents. It makes it very easy for uneducated users.
Running
Applications, is the ability to run an application such as Word processor by
locating it and loading it into the primary memory. Most operating systems can
multitask by running many applications at once.
Support
for built-in Utility Programs: This is the program that find and fixes errors
in the operating system.
Control
Computer Hardware: All programs that need computer hardware must go through the
operating system which can be accessed through the BIOS (basic input output
system) or the device drivers.
Write
short notes on Multiprogramming and Multitasking.
Ans
- Multi programming: -
Multi-programming
increases CPU utilization by organizing jobs (code and data) so that the CPU
always has one to execute. The idea is to keep multiple jobs in main memory. If
one job gets occupied with IO, CPU can be assigned to other job.
Multi-tasking:-
Multi-tasking
is a logical extension of multiprogramming. In multi-tasking systems, the CPU
executes multiple jobs by switching among them typically using a small time
quantum, and the switches occur so frequently that the users can interact with
each program while it is running.
What
are the popular operating systems? Explain in detail.
Ans
- Microsoft Windows
Microsoft
Windows has existed in one form or another since 1985, and it remains the most
popular operating system for home and office computers. Its latest versions,
including Windows 10, are also used on some tablets, and the OS is used on some
web and number-crunching server computers as well. Computers from a wide
variety of manufacturers can use Windows.
Apple iOS
Apple's
iOS is one of the most popular smartphone operating systems, second only to
Android. It runs on Apple hardware, including iPhones, iPad tablets and iPod
Touch media players.
Google's Android OS
Android
is the most popular operating system in the world judging by the number of
devices installed. Largely developed by Google, it's chiefly used on
smartphones and tablets. Unlike iOS, it can be used on devices made by a
variety of different manufacturers, and those makers can tweak parts of its
interface to suit their own needs.
Apple macOS
Apple's
macOS, successor to the popular OS X operating system, runs on Apple laptops
and desktops. Based in part on the historic family of Unix operating systems
dating back to research in the 1960s at AT&T's Bell Labs, macOS shares some
features with other Unix-related operating systems including Linux. While the
graphical interfaces are different, many of the underlying programming
interfaces and command line features are the same.
Linux Operating System
Unlike
many other operating systems, development on Linux isn't led by any one
company. The operating system was created by Finnish programmer Linus Torvalds
in 1991. Nowadays, programmers from all over the world collaborate on its open
source code and submit tweaks to the central kernel software and other
programs.
