Computer networks allow sharing of resources like printers and storage between connected computers. They save resources, costs, time and manpower compared to each computer having separate devices. There are several ways to classify computer networks, including by their data distribution method (host-based vs distributed), the relationship of computers (client-server vs peer-to-peer), geographic range (LAN, MAN, WAN, intranet), connection method (wired vs wireless), and physical topology (bus, star, mesh, ring). The document provides examples of each classification type of computer network.

1. COMPUTER NETWORK
SYSTEM

2. D. Computer Network System
1. The Definition of a Computer Network
A computer network is a collection of two or more
computers connected to each other that allows resource
sharing and data communication directly. The use of
resource together is called sharing, whereas the resource
used together can be a hard disk, printer, scanner, and
CD-ROM drive.
Computer network can save resources, cost , time,
and manpower. Network can save resources because can
be installed one printer for five computers instead of
installing one printer network can for each computer.

3. This saves time and manpower because you don’t
have to, for example, walk to a certain computer just to
copy data using a disk. You can copy data directly from the
computer’s hard disk that is used.
2. Kinds of Computer Network
Network can be classified based on distribution data
method, functional relationship, the area range, the
connection method, and topolody.
a. Network Classified Based on Distribution Data Method
Based on the distribution data, computer network can
be divided into host based network and distributed
network.
Host based network consist of several terminal
computers that are connected to a host computer.

4. Host computer contains data and application and does
almost all of the data processing. The terminal in a host
based network can be a dumb terminal, which is a
terminatl that doesn’t have a data processing tool. The
example of a dumb terminal is a monitor connected
physically to a host computer. Distributed network
physically can be built from the combination of host
based network.
b. Network Classified Based on The Computer’s
Functional Relationship in Data Processing.
Based on the access and data processing, computer
network can be divided into client-server network and
peer to peer network.
Client-server network consist of one more servers
connected to several client computers. The srever plays
a role in providing service, like accessing file, tools, as
well as databases.

5. Peer to peer network consist of several terminals
connected to each other. The principle of this network is
that every computer in a network can be a server and a
client at once.
c. Network Classified Based on the Area Range
Based on the area range , network can be divided into
LAN, MAN, WAN, CAN, and Intranet.
LAN (Local Area Network) is a network within a
relatively small range, limited to a room or a building or
a complex
MAN (Metropolitan Area Network) is a network that
connects two or mire LANs, but its range does not
exceed city area or metropolitan.

6. WAN (Wide Area Netwrok) is a communication data
network that coves a large geographic area and usually
uses commmunication network, like the telephone line.
Intranet, like you have read before, is an information
network of company or organization.
CAN (Campus Area Network) is a computer network
that connects two or more LANs in a certain area.
d. Network Classified Based on The Connection Method
Based on the connection method, network can be
divided into wired/wireline network and wireless
network.
There are several kinds of cable that is usually used
in a network, i.e. coaxial cable, twisted pair that consists
of UTP (Unshielded Twisted Pair) cable and SPT
(Shielded Twisterd Par) cable, along with fiber optic.

7. e. Network Classfied Based on The Topology
Topology shows the physical from of a computer
network. There are some network topologies, such as
bus topology, star topology, mesh topology, and ring
topology.