Networking

Question 1

Name and explain the purpose of 3 methods of securing a wireless network

Answer 1

1. WPA2 - requires a client to enter a password before connecting
2. Disabling SSID broadcast - prevents those who do not know the SSID from connecting by disabling it’s display
3. MAC address filtering - Blocks or allows certain devices from connecting to the network.

Question 2

Describe the steps in the CSMA/CA protocol

Answer 2

1. The device listens to the communication channel to see if it is idle.
2. If the channel isn’t idle, it waits a random period of time and checks again
3. When the channel is idle , the data is transmitted.

Question 3

Explain the role of each layer in the tcp/ip stack

Answer 3

Application - Selects the relevant protocol and interacts with application software
Transport - Establishes an end-to-end connection, splits the transmission into packets
Network - Provides the IP address for each packet
Link - Controls physical connections between pieces of hardware in a network and MAC address

Question 4

What is a socket address

Answer 4

A combination of an IP and a Port Number