Networks
Computer Network – A computer network is a group of two or more computers linked
together.
LAN – LAN is a type of computer network WAN – WAN is a type of computer
which is generally used for computers that network which is generally used for
are geographically close together. computers that are further apart. These
computers are usually connected by
either telephone lines or radio waves.
Network Topology – Network topology is
the shape of a computer network. They
can be either physical or logical.
Types of Network Topology
Networks
Star Network
Definition
All devices are connected to a central hub.
Advantages
Easy to install and manage.
Disadvantages
Bottlenecks can occur as all data must pass through the hub.
Bus Network
Definition
All devices are connected to a central cable.
Advantages
Inexpensive and easy to install.
Disadvantages
Can only handle a small number of computers, requires a cable.
Ring Topology
Definition
All devices are connected to one another in a loop.
Advantages
Offer high bandwidth and can span large distances.
Disadvantages
Expensive and difficult to install.