Chapter 1 (Quiz 1 Portion)

Question 1

What is an Operating System (OS) ?

Answer 1

A program that acts as an intermediary between the user of a computer and the computer hardware.

Question 2

One of the names of the OS is “Manager”. (True or False)

Answer 2

True.

Question 3

What the Operating System (OS) goals?

Answer 3

1- Execute user programs & make solving user problems easier.
2- Make the computer system convenient to use.
3- Use the computer hardware in an efficient manner.

Question 4

What are the 4 components of the computer system?

Answer 4

1- Hardware (CPU, memory, Inputs/Outputs..).
2- Operating System.
3- Application programs (web browsers, video games..).
4- Users.

Question 5

Give examples of users that make up 1 of the computer system components :-

Answer 5

1- People.
2- Machines.
3- Other computers.

Question 6

What Operating systems do?

Answer 6

1- Ease of use.
2- Good performance.
3- Make users for big computers (mainframe or minicomputer) happy.

Question 7

One of the names of the OS is “Resource allocator”. (True or False)

Answer 7

True.

Question 8

Why is the Operating System called “resource allocator”?

Answer 8

1- Manages all resources.
2- Decides between conflicting requests for fair resource use.

Question 9

One of the names of the OS is “Control program”. (True or False)

Answer 9

True.

Question 10

Why is the Operating System called “Control program”?

Answer 10

Controls execution of programs to prevent errors and improper use of the computer.

Question 11

What is kernel?

Answer 11

Part of the OS, the one program running at all times on the computer.

Question 12

Aside from Kernel what is everything else is considered as?

Answer 12

1- A system program.
2- An application program.

Question 13

What is a bootstrap program?

Answer 13

its loaded at power-up or reboot

Question 14

What are the details of the bootstrap program?

Answer 14

1- Typically stored in ROM or EPROM, generally known as “firmware”
2- Initializes all aspects of system
3- Loads operating system kernel and starts execution

Question 15

What are the resources of the Operating System (OS) ?

Answer 15

1- CPU.
2- Memory.
3- Input devices.
4- Output devices.
5- Secondary storage.

Question 16

What are examples of Input devices ?

Answer 16

1- Mouse.
2- Keyboard.

Question 17

What are examples of Output devices ?

Answer 17

1- Monitor.
2- Printer.

Question 18

What are examples of Secondary storage?

Answer 18

Disks

Question 19

What is a hardware interrupt?

Answer 19

Communication between CPU & hardware devices.

Question 20

What is a trap or exception?

Answer 20

A software interrupt.

Question 21

What causes software interrupt?

Answer 21

Its caused by either an “Error” or “User request”.

Question 22

One of the names of the OS is “Interrupt Driven”. (True or False)

Answer 22

True.

Question 23

What is Main Memory and its main details?

Answer 23

Large storage media that the CPU can access directly.
- Main details :-
1- Random access.
2- volatile.

Question 24

What is Secondary storage and its main details?

Answer 24

Extension of main memory that provides large “nonvolatile” storage capacity.
- Main details :-
1- nonvolatile.

Question 25

What is the “criteria” to organize storage systems in hierarchy?

Answer 25

1- Cost.
2- Speed.
3- Volatility.

Question 26

What is Caching?

Answer 26

copying information into faster storage system; main memory can be viewed as a cache for secondary storage.

Question 27

One of the names of the OS is “Device Driver”. (True or False)

Answer 27

True.