Year 12 ATAR Networking

Network Devices

100

This device connects two or more networks and directs data between them.

router

200

This device allows wireless devices to connect to a wired network.

WAP

300

This device protects a network by controlling incoming and outgoing traffic.

firewall

400

This device filters and forwards packets based on MAC addresses.

What is a switch?

500

Which layer of The OSI model does the switch operate in?

layer 2 - Data link layer

Network Models and Protocols

100

This model has 7 layers and helps standardize network communication.

OSI

200

This protocol assigns IP addresses dynamically to devices.

DHCP

300

This protocol resolves domain names into IP addresses.

DNS

400

The transport layer of the OSI model uses these two main protocols.

TCP and UDP

500

This OSI layer handles encryption and compression, ensuring that data is readable by the recipient system.

Presentation Layer

Transmission Media

100

This type of cable is often used for Ethernet and is inexpensive.

unshielded twisted pair (UTP)

200

This medium uses light signals and offers high speed over long distances.

fibre optic cable

300

This type of wireless transmission is most used in remote areas.

Satellite/Starlink

400

The latest stable Wi-Fi protocol as of now:

Wi-Fi 6E, based on the IEEE 802.11ax standard

500

A school uses UTP cabling for classroom computers. After switching on multiple air conditioning units, they experience intermittent connection drops. Suggest a cause

electromagnetic interference

Network Performance and Security

100

This test is used to measure latency between two devices.

Ping test

200

This tool shows each step along a packet’s journey across a network.

traceroute

300

This type of attack floods a network with traffic to bring it down.

denial of service (DoS)

400

 This protocol has no error-checking, leading to faster but less reliable transmission. 

 UDP 

500

A user reports slow loading of web pages. A ping test shows 4 ms latency, while traceroute shows a delay at the third hop. What’s the issue?

a bottleneck or misconfigured router at the third hop

Network Design and Implementation

100

A diagram showing how devices are connected in a network.

network topology

200

This device should be used to segment networks and improve security.

router

300

Using a secure tunnel over the internet to connect to a private network.

VPN

400

This is the difference between a public and private IP address

public addresses are routable on the internet, private are not

500

The number of usable host addresses in a /26 subnet.

62