Lesson Notes By Weeks and Term v4 - SHS 1
GUIDED AND UNGUIDED NETWORK SYSTEMS
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GUIDED AND UNGUIDED NETWORK SYSTEMS
Download the Lessonotes Mobile Ghana app for faster lesson access on Android and iPhone.
Subject: Ict
Class: SHS 1
Term: 2nd Term
Week: 17
Grade code: 2.2.1.LI.2
Strand code: 2
Sub-strand code: 1
Content standard code: 2.2.1.CS.1
Indicator code: 2.2.1.LI.2
Theme: NETWORK SYSTEMS FOR TRANSMI TTING INFORMATION
Subtheme: GUIDED AND UNGUIDED NETWORK SYSTEMS
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This lesson introduces the "rules of the road" for the internet and all computer networks. Just like we use language and grammar to understand each other, computers and devices use protocols and standards to communicate effectively. Whether you are connecting to the school's Wi-Fi, sending a WhatsApp message using mobile data, or transferring music with Bluetooth, these invisible rules are always at work. Understanding them is crucial for comprehending how our digital world in Ghana—from mobile money transactions to online learning—functions. We will explore the key protocols that power both wired (guided) and wireless (unguided) networks.
Introduction: Why Do We Need Rules?
Imagine a busy market in Makola where everyone is shouting in a different language. It would be chaos! No one would understand each other. To have a proper conversation, people need to agree on a common language and some rules (like taking turns to speak).
In the world of computer networks, it's the same. We have devices from many different companies (Samsung, Apple, Tecno, HP, Dell) that all need to communicate. Network Protocols are the agreed-upon set of rules and instructions that allow these devices to exchange information smoothly and reliably. Network Standards are technical specifications that ensure hardware and software from different manufacturers are compatible with each other.
These protocols operate over both physical cables (Guided Media) and through the air (Unguided Media). The protocol defines the "language," while the media is the "path" the language travels on.