Network

Assalamualaikum,

This week I would share about what I've have been learn about computer network. It is simply a group of interconnected computers. Two or more computers are connected via hardware or software, and able to communicate with each other.

Network computer is a major components of a computer network, for example;

1. Communication
2. Media
3. Interconnecting Devices
4. Computers
5. Networking

The data transmission characteristics is :

• Bandwidth (rate of transmission)
• Analog or Digital (type of signal)
• Serial or Parallel (order of bits)

Communication Channel

-To send data through the channel requires some type of transmission media, which may be either physical or wireless.

Network Medium

- Computers share access to common network medium that carries signals from one computer to another.

- Medium may be physical cable, such as twisted pair, coaxial, or fiber-optic.

- Medium may also be wireless.

PHYSICAL MEDIA

WIRELESS MEDIA

•       Microwave system – transmits data via high-frequency radio signals through the atmosphere

•       Satellite system – receive transmitted signals, amplify them, and then transmit the signals to the appropriate locations

•       Cellular technology – uses antennae resembling telephone towers to pick up radio signals within a specific area (cell)

•       Infrared technology – transmits data as infrared light waves from one device to another, providing wireless links between PCs and peripherals

3 TYPES OF NETWORK :)

•   Network in small geographical Area (Room, Building or a Campus) is called LAN (Local Area Network)

•   Network in a City is call MAN (Metropolitan Area Network)

•   Network spread geographically (Country or across Globe) is called WAN (Wide Area Network)

Peer-to-Peer Networking Advantages

•       Easy to install and configure

•       No dedicated server

•       Users control own shared resources

•       Inexpensive to purchase and operate

•       No additional equipment or software

•       No dedicated administrators

•      Works best with 10 or fewer users

Peer-to-Peer Networking Disadvantages

•       Security applies to single resource at a time

•       Users may have many different passwords

•       Must back up each machine individually

•       Machine sharing resources may suffers reduced performance

•       No centralized organization scheme to locate or control access to data

•       Does not usually work well with more than

10 users

that s all that i can share in network topic . theres a lot information to complete this topic, but just this all i can share . see again . :)