A telecommunication system consists of hardware and software that transmits information from one location to another. These systems can transmit text, data, graphics, voice, documents, or full-motion video information with two basic types of signals analog and digital. The major components of a telecommunication system include the following: devices, communication processors, and communications channels and media.
2. Compare and contrast the main wired communications channels ? (Ethernet & Fibre Optic)
Fibre Optic cables consist of thousands of very thin filaments of glass fibres that transmit information via light pulse generated by lasers. The fibre-optic cable is surrounded by cladding, a coating that prevents the light from leaking out of the fibre. In disparity, Ethernet is a common LAN protocol, it consists of coaxial cable carriers (insulated copper wire; used to carry high speed data traffic and television signals) which transmits data at the speeds of 1 billion bits per second. 
3. What are the main business reasons for using networks?
A computer network is a system that connects computers via communications media so that data can be transmitted among them, these include networks such as WANs, LANs and personal area network. A network connects Pc’s. Laptops, servers, printers, point of sale termin
al, and mobiles. Nevertheless, the main reasons for using networks include:
- Networked computer systems enable organisations to be more flexible so that they can adapt to rapidly changing business conditions.
- Networks allow companies to share, hardware, computer applications, and data across and among the organization.
- Networks make it possible for geographically dispersed employees and workgroups to share, documents, ideas, and creative insights, as this encourages teamwork, innovation, and more efficient and effective interactions.
- Networks are a critical link between businesses and their customers.
al, and mobiles. Nevertheless, the main reasons for using networks include:- Networked computer systems enable organisations to be more flexible so that they can adapt to rapidly changing business conditions.
- Networks allow companies to share, hardware, computer applications, and data across and among the organization.
- Networks make it possible for geographically dispersed employees and workgroups to share, documents, ideas, and creative insights, as this encourages teamwork, innovation, and more efficient and effective interactions.
- Networks are a critical link between businesses and their customers.
Networks - http://en.wikipedia.org/wiki/Computer_network
4. What is the difference between LANs and WANs?
The two major types of networks are local area networks (LANs) and wide area networks (WANs).
LANs encompassed a limited geographic area and are usually composed of one communication medium. As stated before they are located within one geographic site for example Notre Dame – Broadway Campus, it is fast and secure approximately 1000mb/s Cat 6, usually fibre optic cables are used though may sometimes be wireless. LANs enables companies to share data and hardware e.g. printers; each device has a network interface and a unique IP address.
In contrast, WANs encompass a broad geographical area and are usually composed of multiple communication media. It allows to connect LANs in remote locations, for example Notre Dame Sydney, Broome and Perth campuses. Thus, WANs are slower and less secure as they use the Internet to form a virtual link. They are also used to share data, but not network devices.
LANs encompassed a limited geographic area and are usually composed of one communication medium. As stated before they are located within one geographic site for example Notre Dame – Broadway Campus, it is fast and secure approximately 1000mb/s Cat 6, usually fibre optic cables are used though may sometimes be wireless. LANs enables companies to share data and hardware e.g. printers; each device has a network interface and a unique IP address.
In contrast, WANs encompass a broad geographical area and are usually composed of multiple communication media. It allows to connect LANs in remote locations, for example Notre Dame Sydney, Broome and Perth campuses. Thus, WANs are slower and less secure as they use the Internet to form a virtual link. They are also used to share data, but not network devices.
5. What is a network protocol?
The network protocol is a set of rules and procedures governing transmissions across a network. Computing devices that are connected to the network access and share the network to transmit and receive data. These components are often referred to as “nodes” of the network. The “nodes” and “protocols” work together by adhering to a common set of rules that enable them to communicate with one another.
6. Describe TCP/IP protocol.
The Transmission Control Protocol/Internet Protocol (TCP/IP) is a file- transfer, packet sw
itching protocol that can send large files of information with the assurance that the data will arrive in uncorrupted form. TCP/IP is the communications protocol of the internet. It can also be used as a communication protocol in a private network. The TCP/IP is the basic communication. The TCP performs three basic functions:I. It manages the movement of packets between computers by establishing a connection between the computers.
II. It sequences the transfer of packets, and
III. It acknowledges the packets that have been transmitted.
The Internet Protocol (IP) is responsible for disassembling, delivering and reassembling the data during transmission. Each computer on the internet has an IP address, these can either be private or public, and however every address must be unique. An example of this includes a domain name system that is used to translate a url into n IP address.
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