IP, MAC & Encryption

Lesson Instructions

Watch and follow the YouTube video, the lesson contains three parts:

  1. Key Information and content - all you need to do here is watch and listen. We recommend you take some notes for this one!

  2. Learning activity - You are to complete the sorting and fill in the blanks activity.

  3. Consolidation - these are past exam question and are for deliberate practice to check your understanding.

Task - Sorting & Fill in the Blanks Activity

Task - Exam Questions - Deliberate Practice

Mark Scheme

Question 1


  • IP addresses can be changed / are allocated as needed

  • MAC addresses can't be changed / every device has a fixed MAC address

  • IP(v4) addresses are 4 bytes long

  • MAC addresses are 6 bytes long

  • IP(v4) addresses are normally written in denary

  • MAC addresses are normally written in Hex

  • IP addresses are configured by software

  • MAC addresses are configured in hardware

  • IP addresses are used for routing across a WAN/Internet

  • MAC addresses are only used within the LAN


Question 2

  • Uses an algorithm to

  • ... jumble/scramble/mix up the data / turns it into a cipher

  • If it is accessed it cannot be understood // it is unintelligible

  • Use of keys to encrypt/decrypt data