Ethernet Standard in IEEE 802 Series | Generated by AI
Question: In the IEEE 802 series of standards, which one is used for Ethernet?
Answer:
The correct answer is A. IEEE 802.3.
Explanation:
-
IEEE 802.3 → This is the standard that defines Ethernet. It specifies the physical layer (PHY) and media access control (MAC) sublayer of the data link layer for wired Ethernet networks. It uses CSMA/CD (in earlier versions) and supports various speeds (10 Mbps, 100 Mbps, 1 Gbps, 10 Gbps, 25 Gbps, 100 Gbps, 400 Gbps, etc.) over twisted-pair copper, optical fiber, and other media.
-
IEEE 802.4 → This standard defined Token Bus, a token-passing LAN technology that was rarely used in practice and is now obsolete.
-
IEEE 802.5 → This standard defined Token Ring, a token-passing network developed by IBM. It was once popular in enterprise environments but has been almost completely replaced by Ethernet.
-
IEEE 802.6 → This standard defined DQDB (Distributed Queue Dual Bus), which was intended for Metropolitan Area Networks (MANs). It was part of the IEEE 802 project but saw very limited real-world deployment.
Therefore, among the given options, only IEEE 802.3 is the Ethernet standard.
Your previous selection (B. IEEE 802.4) was incorrect — IEEE 802.4 is Token Bus, not Ethernet.
References:
- None (this is standard networking knowledge based on IEEE specifications)