Unit 1: Computer Systems

1

Sami is learning about computer systems and their types. He knows that a system is a collection of parts that work together. Based on the textbook, which example best represents a natural system?

A A school management system B A traffic control system C The human respiratory system D A banking system

2

Which of the following is primarily an input device used to enter text and commands into a computer?

A Keyboard B Monitor C Printer D Speaker

3

Which part of CPU interprets instructions?

A ALU B Register C Control Unit D Cache

4

Which component sends data from CPU to memory?

A Data bus B Control bus C Address bus D Expansion slot

5

Which memory is volatile?

A ROM B Hard Disk C RAM D DVD

6

Maha is preparing a presentation on the evolution of computer memory. She finds that magnetic core memory was used in the 1950s and 60s. What type of memory is it considered?

A Primary memory (RAM) B Secondary storage (Hard drive) C Cache memory D Virtual memory

7

Which memory stores frequently used data?

A ROM B Cache C Hard Disk D DVD

8

Which generation of computers used transistors?

A First B Second C Third D Fifth

9

Salma is learning about systems and their types. She defines a system as having inputs, processes, and outputs. Based on the textbook, which component of a computer system provides the 'input'?

A The CPU processing data B The user typing on a keyboard C The monitor displaying a result D The RAM storing data

10

Huda is explaining the role of the Control Unit to her friend. She says it is responsible for managing the execution of instructions. According to the textbook, which signal does the Control Unit generate?

A Data signals B Control signals C Address signals D Clock signals

11

The invention of the Integrated Circuit (IC) led to the development of which generation of computers?

A First Generation B Second Generation C Fourth Generation D Third Generation

12

Which unit of CPU performs arithmetic operations?

A Control Unit B Memory Unit C ALU D Input Unit

13

Software engineering mainly deals with:

A Designing hardware B Developing software C Repairing computers D Network cabling

14

Which generation introduced integrated circuits?

A Second B Third C Fourth D First

15

Hassan is explaining to his friend the difference between hardware engineering and software engineering. He gives an example of designing a new keyboard. According to the textbook, which discipline does keyboard design belong to?

A Software Engineering B Data Communication C Hardware Engineering D Network Engineering

16

Which bus carries memory addresses?

A Data bus B Control bus C Address bus D System bus

17

Fatima is troubleshooting a slow computer. She checks the Task Manager and sees that the RAM usage is at 95%. The computer is using the hard drive as virtual memory. Based on the memory hierarchy, why is the computer slow?

A Hard drive is faster than RAM B Cache memory is full C Virtual memory on hard drive is much slower than RAM D The CPU is overheated

18

Which bus in a computer system is responsible for transferring the actual data between the processor, memory, and peripherals?

A Address Bus B Data Bus C Control Bus D Expansion Bus

19

Which component is required at both ends of data communication?

A Sender and receiver B CPU and RAM C Modem only D Hard disk

20

Which bus controls timing and control signals?

A Data bus B Address bus C Control bus D Expansion bus

21

Mona is reading a textbook on data communication. She learns that parallel transmission sends multiple bits simultaneously over multiple wires. What is a disadvantage of parallel transmission compared to serial?

A It is slower than serial transmission B It requires more wires and is less cost-effective over long distances C It can only transmit one bit at a time D It is less reliable than simplex transmission

22

Rami is studying the types of computer software. He knows that an operating system is system software. Which of the following is also system software?

A Microsoft Excel B Anti-virus software (utility) C Adobe Photoshop D Google Chrome

23

Zara is reading about the hierarchy of memory. She learns that cache memory is faster than RAM. Based on the textbook, what is the main purpose of cache memory?

A To store the operating system permanently B To back up data in case of power failure C To reduce the time for the CPU to access data from RAM D To increase the total storage capacity

24

Rayan is explaining the Von Neumann architecture to his class. He mentions that the system has a single shared memory for both instructions and data. What is a key advantage of this design?

A It is cheaper to manufacture B It allows for self-modifying code and flexibility C It separates data from instructions to prevent errors D It eliminates the need for an operating system

25

Which of the following is a natural system?

A Computer B Traffic system C Solar system D Banking system