network and switching
Network Protocols
date
Oct 19, 2023
slug
network-protocols
author
status
Public
tags
introduction
summary
type
Post
thumbnail
category
network and switching
updatedAt
Oct 19, 2023 12:04 PM
Introduction to Network Protocols
Definition: Protocols define how communications take place between devices
Comparison: Just like rules in human communications, e.g., classroom rules
Purpose: Ensure successful sending and receiving of messages
Card 2: Layered Architectural Model
- TCP/IP Model: Breaks down communication into four areas - application, transport, internet, and network access layers.
- OSI Model: Seven layers - physical, data link, network, transport, session, presentation, and application.
- Benefits: Simplifies protocol design, fosters competition, and allows for independent improvements
Cue Card: Data Link Layer
- Purpose: Links software and hardware layers.
- Key Role: Facilitates connection of upper-layer services to the media.
- Unique Feature:
- Physical devices like PC NIC (Network Interface Card) at the Data Link layer have both software and hardware components.
- Implementation:
- Certain functions are executed in software.
- Other functions are managed in hardware.
- Position in OSI Model:
- Layer 2, just above the Physical Layer.
- Related OSI Layers:
