At which layer of the OSI model would a MAC address be added during encapsulation?

Question

BlackTom AI · Accepted Answer

To understand where a MAC address is added during encapsulation, we need to recall how Ethernet frames are constructed in the OSI model.
Option a: network layer. This layer handles logical addressing like IP addresses, not MAC addresses. Encapsulation at this layer involves adding IP headers, not MACs, so this is not where MAC addresses are introduced.
Option b: physical layer. The physical layer concerns the transmission medium and actual bits on the wire. MAC addresses are not added at this layer; it deals with signaling and wiring rather than addressing information.
Option c: transport layer. The transport layer provides end-to-end communication services (like TCP/UDP) and adds headers related to ports and segmentation. It does not introduce MAC addresses; this layer sits above the network layer.
Option d: data link layer. This is the layer where frame-level addressing occurs, including MAC (hardware) addresses. When a frame is created for transmission on a local network, the data link layer encapsulates the packet by adding a frame header and trailer, which includes the source and destination MAC addresses. This is the correct layer for MAC address insertion.

Introduction to Networking (CT043-3-1-IN-25-RESIT)

At which layer of the OSI model would a MAC address be added during encapsulation?

View Explanation

Log in for full answers

Similar Questions

At which layer of the OSI Model error detection is done while sending and receiving the frames?

Question at position 41 Which of the following ARE Link Layer Services? Provide ALL the answersCongestion ControlFlow ControlMaintain Group InformationTimeout ComputationLink AccessFraming

Question at position 1 ARP protocol works at __________ layer.LinkPhysicalTransportNetwork

Question at position 1 ARP protocol works at __________ layer.LinkNetworkTransportPhysical

Which networking device forwards data packets at the hardware address level?

Which of the following layers handle physical communications between two neighboring systems?

MACアドレスは，OSI基本参照モデルのどの層で接続されているノードを識別するために利用されますか？

Wireless access points operate at which layer of the OSI model?

More Practical Tools for Students Powered by AI Study Helper

Homework AI Solver

Stylized AI Paper Writer

Plagiarism Checker Assistant

Citation AI Academic Writing Tool

In-Class Translation Assistant

AI Note Generator

AI Quiz Answers

Past Exam Questions from University Test Bank

Smart Practice Assistant

Adaptive Practice

Making Your Study Simpler