Question

Which layer of the OSI model does a router run at? A. Layer 4 B. Layer 1 C. Layer 3 D. Layer 2

    Which layer of the OSI model does a router run at?
A. Layer 4
B. Layer 1
C. Layer 3
D. Layer 2

CompTIA Network plus Certification Study Guide

CompTIA Network plus Certification Study Guide

Glen Clarke 4th Edition

Chapter 3, Problem 16

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It is divided into seven layers, each with its own specific functions. Show more…

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Which layer of the OSI model does a router run at? A. Layer 4 B. Layer 1 C. Layer 3 D. Layer 2

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Key Concepts

Router

A router is a device that operates primarily at the Network Layer (Layer 3) of the OSI model. It directs data packets between networks by using logical addressing, such as IP addresses, ensuring that data reaches its correct destination across interconnected networks.

Network Layer

The Network Layer, which is the third tier in the OSI model, is responsible for logical addressing and routing. This layer manages the movement of data packets between devices across different networks by determining the best path to the destination based on factors like traffic, network topology, and protocols.

OSI Model

The OSI (Open Systems Interconnection) model is a conceptual framework used to understand and implement network communications by dividing the communication process into seven distinct layers. Each layer has a specific function, making it easier to diagnose network problems and design interoperable hardware and software.

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