Welcome To A Computer Network- Resource Web Page!

The Time is:

Computer Networking is a specific and very important application of data communications.Many nodes usually require high data transfer rates,and ability to connect to any other node within close proximity of each other.

There are many kinds of topologies such as:

Star
Ring
Bus
Hub/Tree

The above 4 tropologies are explained in detailed:

Star Network Uses large amount of cable, Outage of node connection does not affect others and centre or hub failure-> all nodes outage.
Ring Network Reduces cabling costs, One node or line down and network dies, cable route must be circular.
Bus Network Further reduced cabling costs, non circular route, one node down, rest still work and interconnected via bridges.
Hub/Tree Network Hub is bus/ring with all wiring inside one box,cross between star and bus/ring,can be combined into trees.

What is Baseband System? Sends digital signal straight to line.They may be encoded but they are not modulated.

Network drops because of the frequency of the signals used,care must be taken to avoid reflections due to impedance mismatches.

*Cable ends must be terminated.

* Tees must be avoided.