Back to the 2024 paper

Module 2: Data Link Layer & MAC Sublayer

20242m

Which of the following cannot be used as a medium for 802.3 ethernet?
(i) A thin coaxial cable
(ii) A microwave link
(iii) A twisted pair cable
(iv) A fiber optical cable

Worked SolutionAI Assisted

Answer: (ii) A microwave link

IEEE 802.3 defines Ethernet over wired (guided) physical media only. The other three choices are all standard 802.3 media: thin coaxial cable for 10BASE2 (i), twisted pair for 10BASE-T, 100BASE-TX and 1000BASE-T (iii), and optical fibre for 10BASE-F and the 1000BASE-SX/LX variants (iv).

A microwave link (ii) is an unguided wireless medium. Wireless media belong to the IEEE 802.11 (Wi-Fi) family of standards, not to 802.3, so microwave cannot serve as an 802.3 Ethernet medium.

Similar questions

Free AppAndroid App

Coursify Android App

Generate AI courses, take quick quizzes between classes, and master complex engineering concepts on the go.