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MCQs — Computer Systems

Practice questions for Computer Science.

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Question 261

A laptop's screen is cracked, but the operating system and files are fine. What kind of problem is this?

A. A software problem, because the files are fine

B. A hardware problem, because a physical part is damaged

C. A software problem, because the OS is installed

D. Neither, because laptops cannot break

Question 262

Data communication is best defined as:

A. The exchange of data between two or more devices through a transmission medium

B. Storing data on a hard disk

C. Printing data on paper

D. Deleting data from memory

Question 263

Which of the following is an example of data communication?

A. Editing a photo on a computer that is not connected to anything

B. Sending a message from one mobile phone to another

C. Typing a document and saving it on the same computer

D. Playing a stored music file

Question 264

Which of the following describes effective data communication?

A. Data is delivered to any random device

B. Data is changed during transmission

C. Data is delivered accurately, to the correct destination and on time

D. Data arrives after a long delay

Question 265

Before data travels along a cable or through the air, it is converted into:

A. Photographs

B. Printed pages

C. Musical notes

D. Signals

Question 266

Which is a major benefit of data communication?

A. It allows information to be shared quickly over long distances

B. It prevents the use of computers

C. It removes the need for electricity

D. It makes files smaller on paper

Question 267

In data communication, the device that originates and sends the message is called the:

A. Receiver

B. Sender

C. Medium

D. Protocol

Question 268

The device that accepts the message at the destination is called the:

A. Sender

B. Medium

C. Receiver

D. Message

Question 269

In data communication, the information that is being transferred is called the:

A. Medium

B. Sender

C. Receiver

D. Message

Question 270

The transmission medium is:

A. The path through which the message travels

B. The person reading the message

C. The screen on which the message is shown

D. The program that writes the message

Question 271

Which of the following is a wired (guided) transmission medium?

A. Radio waves

B. Optical fibre cable

C. Microwaves

D. Satellite signals

Question 272

A computer network is:

A. A single computer with a monitor

B. A set of unrelated software programs

C. Two or more computers or devices connected to share data and resources

D. A type of printer

Question 273

What is the main purpose of a computer network?

A. To reduce the size of the CPU

B. To stop users from using printers

C. To remove the need for memory

D. To share resources and information among connected devices

Question 274

Which is an advantage of connecting computers in a network?

A. Many users can share a single printer

B. Every user must buy a separate printer

C. Files cannot be shared

D. Users cannot communicate

Question 275

Which of the following is NOT a benefit of a computer network?

A. Faster communication between users

B. Complete protection of every computer from all viruses

C. Sharing of files and devices

D. Easier central backup of data

Question 276

Network architecture refers to:

A. The building in which the network is housed

B. The colour of the cables

C. The design and structure of a network and how its computers are organised to communicate

D. The size of the monitors

Question 277

Which two are the main network architectures (models)?

A. LAN and WAN

B. Bus and star

C. RAM and ROM

D. Client-server and peer-to-peer

Question 278

Which factors should mostly decide whether to choose client-server or peer-to-peer architecture?

A. The number of computers and the need for central control

B. The colour of the computers

C. The brand of the monitors

D. The wallpaper on the desktop

Question 279

A school computer lab has 40 computers that need central login accounts and shared student files. Which architecture is most suitable?

A. Peer-to-peer

B. Client-server

C. Stand-alone with no network

D. Punched-card system

Question 280

In a client-server network, the server is:

A. A computer that only requests services

B. A printer cable

C. A powerful computer that provides services and resources to other computers

D. A type of keyboard

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