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MCQs — Computer Systems

Practice questions for Computer Science.

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Question 21

Which pair of high-level languages was introduced during the second generation?

A. Python and Java

B. C++ and Ruby

C. FORTRAN and COBOL

D. Swift and Kotlin

Question 22

An integrated circuit (IC) is best described as:

A. A vacuum tube sealed in glass

B. A tiny chip holding many transistors and other components

C. A card with holes that stores data

D. A gear wheel used for counting

Question 23

Third-generation users began to interact with computers directly through:

A. Keyboards and monitors

B. Plugboards and switches only

C. Punched cards only

D. Voice commands only

Question 24

The IBM System/360 belongs to which of these groups of computers?

A. Vacuum-tube computers

B. Transistor-only computers

C. Microprocessor-based personal computers

D. Integrated-circuit computers

Question 25

What is the defining feature of fourth-generation computers?

A. The whole CPU is placed on a single chip called a microprocessor

B. Each switch is a separate vacuum tube

C. Data is entered only through punched cards

D. Every part is built from separate transistors

Question 26

The IBM PC and Apple Macintosh are examples of computers built around:

A. Vacuum tubes

B. Microprocessors

C. Mechanical gears

D. Relays

Question 27

The Intel 4004, released in 1971, is important because it was the first:

A. Transistor

B. Commercially available microprocessor

C. Vacuum-tube computer

D. Punched-card tabulator

Question 28

Fifth-generation computing is mainly associated with:

A. Vacuum tubes

B. Punched cards

C. Mechanical calculators

D. Artificial intelligence

Question 29

Which capability best describes a fifth-generation system?

A. Programmed only by changing wires and switches

B. Understanding spoken commands and learning from data

C. Working only with cards that have punched holes

D. Calculating only with rotating gear wheels

Question 30

Which generation and technology pair is correct?

A. First generation – integrated circuits

B. Second generation – transistors

C. Third generation – vacuum tubes

D. Fourth generation – transistors only

Question 31

What is the main hardware difference between third- and fourth-generation computers?

A. Third used ICs with few components; fourth put a whole CPU on one chip

B. Third used vacuum tubes; fourth used relays

C. Third used punched cards only; fourth used abacuses

D. Third used microprocessors; fourth used transistors

Question 32

A system is best defined as:

A. A single device that works alone

B. Any machine that uses electricity

C. A group of related components working together to achieve a common goal

D. A collection of unrelated objects kept in one place

Question 33

In a school system, the students, teachers and classrooms are examples of:

A. The environment outside the system

B. The components of the system

C. Feedback signals

D. The outputs of another system

Question 34

The surroundings that lie outside a system's boundary but interact with it are called its:

A. Components

B. Processes

C. Environment

D. Objectives

Question 35

Why is a single bicycle wheel, by itself, not considered a complete system?

A. A system must contain electronic parts

B. A system needs several interrelated components working towards a goal

C. A wheel is too small to be a system

D. A system must be built by a company

Question 36

Which of the following is NOT a system?

A. A traffic-light network at a city crossing

B. A library with books, staff and a catalogue

C. A mobile phone network

D. A pile of unrelated stones on the ground

Question 37

A hospital exists to treat patients and improve public health. Which characteristic of a system does this show?

A. Objective (purpose)

B. Boundary

C. Environment

D. Randomness

Question 38

In a car, the engine cannot move the vehicle without the transmission and wheels. This illustrates:

A. Independence of components

B. Interdependence of components

C. Absence of a goal

D. Natural origin

Question 39

The limit that separates a system from its environment is called its:

A. Input

B. Output

C. Feedback

D. Boundary

Question 40

Natural systems are systems that:

A. Exist in nature without being designed by humans

B. Are designed and built by engineers

C. Work only with electricity

D. Are controlled only by computers

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