Skip to content
Skip to main content

About this free course

Download this course

Share this free course

Discovering computer networks: hands on in the Open Networking Lab
Discovering computer networks: hands on in the Open Networking Lab

Start this free course now. Just create an account and sign in. Enrol and complete the course for a free statement of participation or digital badge if available.

12.1 IP addresses, MAC addresses and the ARP process

In this section you will briefly recap MAC and IP addresses, look at where they fit into the TCP/IP network model, and how the addresses interact with each other. You will use a small network set up in Packet Tracer running in simulation mode, which will show you what the packets and frames of data are doing at each stage of the process.

Watch the video below, which is about 6 minutes long.

Box _unit7.2.1 The principles of routing and switching

Download this video clip.Video player: 67_the_princuples_of_routing_and_switching.mp4
Copy this transcript to the clipboard
Print this transcript
Show transcript|Hide transcript
Interactive feature not available in single page view (see it in standard view).

Activity _unit7.2.1 Activity 1 Test yourself


(a) Packet


(b) Frame


(c) Data


(d) Block

The correct answer is b.


(a) The ARP cache records the number of ICMP packets sent.


(b) It is an address table.


(c) The ARP cache stores the IP address to MAC address mappings temporarily to minimise ARP lookups.


(d) The ARP cache stores a history of destination IP addresses the machine has communicated with.

The correct answer is c.