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Unit 1: Computer Systems

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Question 1 of 30 0% read

1. In a data communication system, the device that sends the data message is known as the:

A Sender
B Receiver
C Medium
D Protocol

2. Which component is considered the brain of the computer?

A Keyboard
B Monitor
C CPU
D Hard Disk

3. 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

4. Which component of the computer system is often referred to as the 'brain' of the computer?

A RAM
B Motherboard
C CPU (Central Processing Unit)
D Hard Disk Drive

5. In which mode of data transmission can data flow in both directions, but only one direction at a time?

A Simplex
B Full-duplex
C Half-duplex
D Multiplex

6. Which type of memory is volatile, meaning its contents are lost when the computer is powered off?

A ROM (Read-Only Memory)
B RAM (Random Access Memory)
C Flash Memory
D Hard Disk Drive

7. Which software is required to run a computer?

A Application software
B Utility software
C Operating system
D Antivirus

8. Which memory is also called main memory?

A Cache
B RAM
C ROM
D Register

9. Which of the following is utility software?

A Antivirus
B Compiler
C Browser
D Word Processor

10. Which generation of computers used transistors?

A First
B Second
C Third
D Fifth

11. Which unit of CPU performs arithmetic operations?

A Control Unit
B Memory Unit
C ALU
D Input Unit

12. Which device converts digital signals to analog?

A Router
B Switch
C Modem
D Hub

13. Which bus controls timing and control signals?

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

14. Which part of CPU interprets instructions?

A ALU
B Register
C Control Unit
D Cache

15. Von Neumann architecture is based on the concept of:

A Separate memory for data and instructions
B No memory usage
C Single memory for data and instructions
D Cloud storage

16. Data communication refers to:

A Processing data
B Storing data
C Transferring data
D Deleting data

17. In the hierarchy of computer memory, which of the following is the slowest but has the largest capacity?

A CPU Registers
B Cache Memory
C Main Memory (RAM)
D Secondary Storage (HDD/SSD)

18. Which type of high-speed memory is located directly on the CPU or between the CPU and RAM?

A Secondary Memory
B Cache Memory
C Virtual Memory
D Read-Only Memory

19. A system that interacts with its external environment is known as a(n):

A Closed System
B Open System
C Static System
D Isolated System

20. Which type of memory is volatile, meaning its contents are lost when the power is turned off?

A ROM
B SSD
C RAM
D Flash Memory

21. Which device is considered the first mechanical computer?

A ENIAC
B Abacus
C UNIVAC
D IBM PC

22. According to the Von Neumann architecture, a computer consists of a CPU, a memory unit, and I/O devices. Where are both program instructions and data stored?

A In separate memories
B In a single, shared memory
C Only within the CPU registers
D On the input/output devices

23. A set of parallel electrical wires used to transfer data between different components of a computer is called a:

A Bus
B Port
C Cable
D Socket

24. Which device is used to convert digital signals from a computer to analog signals for transmission over telephone lines and vice-versa?

A Router
B Switch
C Hub
D Modem

25. 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

26. Which component is essential for data communication?

A Sender
B Receiver
C Transmission medium
D All of these

27. Which computer generation is based on artificial intelligence?

A Third
B Fourth
C Fifth
D Second

28. A key feature of the Von Neumann architecture is that:

A It has separate memory for instructions and data.
B It cannot be programmed electronically.
C It uses a single storage structure to hold both instructions and data.
D It uses vacuum tubes exclusively for processing.

29. Which component of the CPU is responsible for performing arithmetic and logical operations?

A Control Unit (CU)
B Arithmetic Logic Unit (ALU)
C Memory Unit (MU)
D Registers

30. Which memory is closest to CPU?

A RAM
B Hard Disk
C Cache
D ROM

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