Fundamentals Of Communication And Networking

A wireless local area network that is based on international standards Used to enable devices to connect to a network wirelessly

Wireless network adapter Wireless access point

SSID of the network cannot be seen when trying to connect so only trusted users who knows the SSID of the network can connect

MAC is a unique code that can identify a particular device on a network Whitelisting means that only certain trusted people on a network can access it

To detect collisions and and only starts transmission when the channel is free before a station starts transmission. Ethernet is not required.

allows user to connect to the desired network when multiple independent network operate in the same area

Doesn’t need a central server and easier to set up Less secure and speed of one machine can affect other machines in a network

How nodes are physically laid out

How data flows through a network

By using a bus protocol and appropriate physical switching

Faster access speed and more secure Client is dependant on the server

Number of signal changes in the medium in a second

Range of frequencies that can be transmitted across a network connection

Set of rules

Number of bits transferred between devices in one second

If more than one bit is encoded in each signal change

Bit rate = baud rate x no. Of bit pet baud Where: Bit rate is directly proportionate to bandwidth

Where the pulse of the clock of the sending and receiving devices are in time with each other. They might share a common clock

Data is transmitted between two devices that do not share a common clock signal

Indicates to the receiving device when the data transmission begins and ends

Data flows through a signal line

Data flows through multiple lines

Cheaper as less wire is required Doesn’t suffer from crosstalk as there is only one transmission line