---
title: "Differentiate wired and wireless systems"
subject: "Basic Electronics Engineering"
chapter: 5
key: "semester_2/basic_electronics_engineering:wired-vs-wireless-diff"
source: https://www.bctengineer.com/q/semester_2/basic_electronics_engineering/wired-vs-wireless-diff
site: BCT Engineering
---

# Differentiate wired and wireless systems

Basic Electronics Engineering · Chapter 5: Communication System

- Asked in: 2074 Bhadra, 3 marks
- Video: [Wired Vs Wireless communication || Difference between Wired and Wireless communication](https://www.youtube.com/watch?v=Gv8t-AHBpyc) — Engineer MB Sah
- Answer checked by Claude Opus 5.5 (high effort) on 2026-10-14
- Page: https://www.bctengineer.com/q/semester_2/basic_electronics_engineering/wired-vs-wireless-diff
- Whole chapter: https://www.bctengineer.com/md/semester_2/basic_electronics_engineering/chapter-5

## Question

Differentiate between wired and wireless communication systems.

## Short answer

Wired uses physical cables, offers higher security and stable data rates but no mobility; wireless uses free-space EM waves, provides mobility and easier installation but suffers from interference and lower security.

## Answer

| Point | Wired | Wireless |
|---|---|---|
| Medium | Physical cable (copper, coaxial, fiber) | Free space (air or vacuum) as EMW |
| Mobility | Fixed, no mobility | Allows mobility of users |
| Installation | Costly and time-consuming to lay cables | Quick and cheap, good in hilly areas |
| Security | More secure, hard to tap | Less secure, signal can be intercepted |
| Interference | Little (shielded cable, fiber) | High, affected by weather and other signals |
| Data rate | High and stable | Lower and variable |
| Examples | Telephone, LAN, optical fiber, cable TV | Radio, TV, mobile phone, Wi-Fi, satellite |

## Check yourself

The answer's key points as multiple-choice questions, with the correct option and why.

1. Which system allows user mobility?
   A. Wireless
   B. Wired
   C. Both equally
   D. Neither
   Answer: A. Wired systems are fixed to cables. (Key point: Mobility)

2. Which is more secure and why?
   A. Wireless; it cannot be intercepted
   B. Wired; it is open to anyone
   C. Wired; the signal is hard to tap
   D. Both are equal
   Answer: C. Wireless signals can be intercepted. (Key point: Security)

3. Which is more affected by weather and other signals?
   A. Wireless
   B. Wired shielded cable
   C. Optical fiber
   D. Wired Ethernet
   Answer: A. Free-space signals suffer interference. (Key point: Interference)

## Close variants set in other exams

- [Wired and wireless communication systems](https://www.bctengineer.com/question.md?key=semester_2%2Fbasic_electronics_engineering%3Awired-wireless-systems) — Basic Electronics Engineering, chapter 5, asked 2×

## Related in other subjects

- [Wired vs wireless media; four-wire and hybrid](https://www.bctengineer.com/question.md?key=semester_8%2Ftelecommunications%3Awired-wireless-four-wire-hybrid) — Telecommunications, chapter 2, asked 2×
- [Regulatory issues in wireless communication](https://www.bctengineer.com/question.md?key=semester_7%2Fwireless_communication%3Aregulatory-issues) — Wireless Communication, chapter 1, asked 6×
- [Trends in wireless communication beyond 3G](https://www.bctengineer.com/question.md?key=semester_7%2Fwireless_communication%3Atrends-beyond-3g) — Wireless Communication, chapter 1
- [Benefits of wireless communication and 4G](https://www.bctengineer.com/question.md?key=semester_7%2Fwireless_communication%3Awireless-benefits-4g) — Wireless Communication, chapter 1