132L3 - Network Addresses and DNS
In this lesson, we explore how data is identified, routed, and delivered correctly across computer networks.
Students learn how devices are recognised on a network, how data knows where to go, and why systems need agreed rules to communicate reliably. This lesson builds the foundation for understanding how the internet works behind the scenes.
In this lesson, you will learn:
What an IP address is and why every device on a network needs one
The role of a MAC address and how it uniquely identifies hardware
The difference between IP addresses and MAC addresses
What DNS (Domain Name System) is and how it translates domain names into IP addresses
Why standards are essential for network communication
How all of these ideas work together to ensure data is sent safely and correctly
This lesson is designed for OCR GCSE Computer Science (J277) and supports exam-ready understanding using clear explanations, visuals, and structured examples.
📘 Part of the J277 learning sequence
🎧 Includes supporting visuals and student-friendly explanations
📸 Students can screenshot slides or use the follow-up tasks for evidence
Hashtags
#GCSEComputerScience #OCRJ277 #ComputerNetworks #IPAddresses #DNS #MACAddress #PrototypeEducation