Networks

Networks

1. Advantages of networks

   • Sharing devices such as printers saves money.
   • Site licences are likely to be cheaper than buying several standalone licences.
   • Files can easily be shared between users.

2. Disadvantages of networks

   • Purchasing the network cabling and file servers can be expensive.
   • Managing a large network is complicated, requires training and a network manager usually needs to be employed.
   • Viruses can spread to other computers throughout a computer network.

3. client/server network. A computer network in which one centralized, powerful computer is a hub to which many less powerful personal computers or workstations are connected. The clients run programs and access data that are stored on the server. Compare peer-to-peer network.

4. In its simplest form, a peer to peer network is created when two or more PCs are connected and share resources without going through a separate server computer. A peer to peer network can be an ad hoc connection—a couple of computers connected via a Universal Serial Bus to transfer

5. Ring network

6. Bus network

7. Star network

8. A Local Area Network is a private computer network that connects computers in small physical areas. Example: A small office, A Single building, Multiple buildings inside a campus etc. Wide Area Networks is type of computer network to connect offices which are located in different geographical locations.

9. IP address

   • a unique string of numbers separated by full stops that identifies each computer using the Internet Protocol to communicate over a network.

10. Mac address

    • A mac address of a computer is a unique identifier assigned to network interfaces for communications at the data link layer of a network segment.

11. Packets

    • A piece of a message transmitted over a packet-switching network. See under packet switching. One of the key features of a packet is that it contains the destination address in addition to the data. In IP networks, packets are often called datagrams.

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