A computer network connects shared resources like file servers and communication channels to allow workstations or terminals to access and exchange information. It consists of a host computer, transmission lines using technologies like UTP or STP cabling, and networking devices like hubs, switches, and routers to connect the workstations or terminals to the host and each other. Common network operating systems that manage these connections and resources include Windows, Linux, Novell Netware, and Unix variants.

1. Computer Network)
Shared
Resource)
(File Server)
Communication Chanel) (Workstation or
Terminal) Network Operation
System)
1.

2. (Resources)
LAN)
Host Computer
2.
Receiver) Transmitter)
(UTP)

3. STP)
3.
Workstation or Terminal)
Workstation)
Terminal)
Host
4.
- Network Interface

4. Card :NIC)
- Modem : Modulator Demodulator)
Digital)
Analog)

5. - Hub)
Star)
File Server Workstation
5.
Windows NT ,
Linux , Novell Netware , Windows XP ,Windows
2000 , Solaris , Unix

6. 2
,
6
(Local Area Network:
LAN)
(Wide Area Network:
WAN)

7. (Metropolitan area network : MAN)
(Controller area network) : CAN)
(Micro Controller unit: MCU)
(Personal area
network) : PAN)
(Storage area network) :
SAN)