Communication Systems: JAMB Computer Studies Questions, Answers & Notes

What Communication Systems covers in the JAMB Computer Studies syllabus

A communication system is used to send and receive information and messages. Its three basic parts are the sender (source), the medium (channel — the path through which a message travels) and the receiver. Communication can be wired (using cables such as telephone lines and fibre optic) or wireless (using radio waves, such as Wi-Fi and mobile networks); it can also be traditional (smoke signals, drums, town-criers) or modern/electronic (radio, television, telephone). Telecommunication is communication over long distances by electronic means, a modem modulates and demodulates signals for transmission over telephone lines, and bandwidth (data rate) is the rate at which data is transferred. These systems have made the world a 'global village' by connecting people everywhere. The main point: a communication system sends information from a sender through a medium to a receiver, by wired or wireless means.

For Communication Systems, JAMB expects you to be able to:

• Define a communication system and its parts (sender, medium/channel, receiver)
• Distinguish wired vs wireless, and traditional vs modern (electronic) means
• Recall telecommunication, modem, bandwidth and the 'global village'

Key facts & revision notes: Communication Systems

These are the recurring points our Communication Systems questions test — revise them until each feels automatic, then practise the questions above to lock them in.

• A communication system is used to send and receive information and messages.
• The three basic parts are the sender (source), the medium (channel) and the receiver.
• The medium (channel) is the path through which a message travels.
• A telephone is an example of a communication device.
• Wired transmission uses cables/wires (e.g.
• telephone lines, fibre optic).
• Wireless transmission sends signals without cables, using radio waves (e.g.
• Smoke signals, drums and town-criers are traditional means of communication.
• Telecommunication is communication over long distances by electronic means.
• A modem modulates and demodulates signals for transmission over telephone lines.
• Radio, television and telephone are modern (electronic) media of communication.
• Bandwidth (data rate) is the rate at which data is transferred over a channel.
• Communication systems have made the world a 'global village' by connecting people everywhere.
• A communication system sends and receives information.
• The three basic parts are sender, medium and receiver.
• Communication using cables is wired.
• Communication using radio waves is wireless.
• Drums and town-criers are a traditional means.
• A modem transmits signals over phone lines.
• Communication over long distances electronically is telecommunication.
• The main point is that a communication system sends information from a sender through a medium to a receiver, by wired or wireless means.

Worked examples

Three Communication Systems questions with the answer and a short explanation, so you can see how the topic is set before you practise the full set.

How Communication Systems is tested in JAMB Computer Studies

Our Communication Systems bank holds 20 questions (3 easy, 13 medium, 4 hard). JAMB Computer Studies typically returns to Communication Systems year after year, so steady practice on this topic is high-value revision. Questions are multiple-choice with four options, and at UTME pace you get roughly 40 seconds each — which is why timed practice matters.

How to answer Communication Systems questions

Work the stem first and predict the answer before you look at the options; then eliminate the ones that contradict the key facts above. Watch for “which is not…”, “all of the above” and “except” style stems, which are where rushed candidates lose easy marks on Communication Systems. If a calculation or a precise definition is involved, work it from first principles rather than guessing from a half-remembered rule. When two options look right, re-read the stem for the qualifier that separates them — JAMB rarely repeats an option by accident. If you are still unsure, eliminate the two weakest choices to lift your odds, flag the question, and move on; never burn a full minute on one Computer Studies item when the exam gives you about forty seconds each. Then come back to flagged questions with whatever time remains. The single most reliable way to get faster at Communication Systems is repeated timed practice, so use the button above until the recurring patterns feel automatic.

Common mistakes to avoid in Communication Systems

The errors that cost marks on Communication Systems are usually careless rather than conceptual: misreading a negative stem, confusing two similar terms, or rushing a definition you actually know. Candidates also over-rely on “expo” and last-minute cramming instead of understanding the topic — which fails the moment JAMB rephrases a familiar idea. Treat every option as a claim to be checked against the facts above, keep your working tidy for any calculation, and don’t change a considered answer on a hunch. Above all, revise Communication Systems actively by answering questions, not just by re-reading notes — recall under time is what the exam rewards.

Frequently asked questions

Is Communication Systems part of the JAMB Computer Studies syllabus?

Yes. Communication Systems is a recognised topic in the JAMB Computer Studies syllabus, covering define a communication system and its parts (sender, medium/channel, receiver). You should be able to recall its key facts and apply them to multiple-choice questions.

How many Communication Systems questions can I practise on Belmadeng?

There are 20 original, JAMB-standard Communication Systems questions in our free bank, each with the correct answer and a worked explanation. You can practise them untimed or as a timed test.

What are the most important points to know about Communication Systems?

A communication system is used to send and receive information and messages. Its three basic parts are the sender (source), the medium (channel — the path through which a message travels) and the receiver. Communication can be wired (using cables such as telephone lines and fibre optic) or wireless …

How do I answer Communication Systems questions quickly in JAMB?

Read the stem carefully, eliminate clearly wrong options, and match the remaining choices to the key facts for Communication Systems. Practising timed Communication Systems questions builds the speed you need for UTME's pace of about 40 seconds per question.

Are these JAMB Computer Studies Communication Systems questions past questions or original?

They are original questions written to JAMB (UTME) standard and mapped to the official syllabus — not reproduced past papers. This keeps them legal to use freely while closely mirroring how the real exam tests the topic.

Where can I practise Communication Systems questions free without signing up?

Right here — tap “Start Communication Systems practice” on this page to begin instantly. Belmadeng's CBT practice is completely free and needs no sign-up, download or subscription.

About these questions: original, JAMB-standard items written from the official UTME Computer Studies syllabus (last reviewed 2026-09-18). Belmadeng is an independent study platform and is not affiliated with JAMB. Spotted an error? Use the report link.