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Federal college of dental technology

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Federal college of dental technology

  1. 1. FEDERAL COLLEGE OF DENTAL TECHNOLOGY AND THERAPY P.M.B. 01473 ENUGU, NIGERIA COM 101 ASSIGNMENTS EZE JOHN ONYENEKE FCDT&T/17/DTH/04510 OF DEPARTMENT OF DENTAL THERAPY COURSE LECTURER: MR. OSIJIRIN ADESEGUN
  2. 2. QUESTION 1. Vividly explain the following terms Intranets Traditionally, intranet software was a static platform for information sharing, but a lot has changed since their initial inception. Now seen as a significant part of a wider digital workplace, an intranet software platform will primarily consist of social, collaborative, and information management features. These will include essential applications such as calendar management, a Document Management System (DMS), and a Content Management System (CMS), as well as HR functions such as a holiday management app and staff directory. Most importantly, however, an intranet is, as the name suggests, a system which is accessed internally. Ultimately, an intranet is a secure and private online portal for your employees, and will be situated within your business framework to allow your staff to connect, communicate, and collaborate. An intranet will be used for all matters which relate to the company, with only those who work within the business allowed to have access. Intranets allow employees to work together in a secure and productive environment, facilitating open communication, efficient information sharing, and streamlined processes in one private and central space. Staff members who work remotely can still work as effectively as they could if they were in the office; all the data they need will be stored in the company intranet, and communicating to their colleagues is as easy as a click of a mouse. Extranets Extranet software, unsurprisingly, is an online portal that can be accessed externally. The important thing to bear in mind is that extranets exist to create a path of communication between your internal staff and external organisations, whether they be customers, suppliers, or business partners. An extranet provides a place for your business and third parties to work together and share information in a secure environment, which sits outside of your intranet – meaning that external partners will not have access to confidential internal matters. From a customer’s point of view especially, utilising an extranet shows a great sense of commitment from your business, as they are provided a place to communicate directly with you and build a blossoming relationship. For business partners or suppliers, extranets allow for easy data transfer and knowledge sharing, as well as an efficient way to collaborate and brainstorm on common tasks, saving time and eliminating the need for endless emails.
  3. 3. QUESTIONS 2a. State two differences between Data and Information 1. Data is a single unit. A group of data which carries news and meaning is called Information. 2. Data doesn’t carry a meaning. Information must carry a logical meaning b. Mention five sources of information 1. Diaries 2. Letters 3. Speeches 4. Newspaper articles 5. Journal articles QUESTION 3. State two advantages and disadvantages of each of the following a. Mesh topology Advantages of Mesh topology 1) Data can be transmitted from different devices simultaneously. This topology can withstand high traffic. 2) Even if one of the components fails there is always an alternative present. So data transfer doesn’t get affected. Disadvantages of Mesh topology 1) Set-up and maintenance of this topology is very difficult. Even administration of the network is tough. 2) There are high chances of redundancy in many of the network connections. b. Tree topology Advantages of Tree Topology 1. It is an extension of Star and bus Topologies, so in networks where these topologies can't be implemented individually for reasons related to scalability, tree topology is the best alternative. 2. Expansion of Network is possible and easy.
  4. 4. Disadvantages of Tree Topology 1. Because of its basic structure, tree topology, relies heavily on the main bus cable, if it breaks whole network is crippled. 2. As more and more nodes and segments are added, the maintenance becomes difficult. c. Hybrid topology Advantages of Hybrid Network Topology 1) Scalable: Hybrid networks are built in a fashion which enables for easy integration of new hardware components like additional concentration points. It’s quite simple to extend the size of network with the addition of new elements, without disturbing existing architecture. 2) Effective: Hybrid topology is the combination of two or more topologies, so we can design it in such a way that strengths of constituent topologies are maximized while there weaknesses are neutralized. For example we saw Ring Topology has good data reliability (achieved by use of tokens) and Star topology has high tolerance capability (as each node is not directly connected to other but through central device), so these two can be used effectively in hybrid star-ring topology. Disadvantages of Hybrid Topology 1) Complexity of Design: One of the biggest drawback of hybrid topology is its design. Its not easy to design this type of architecture and its a tough job for designers. Configuration and installation process needs to be very efficient. 2) Expensive: The network hubs needed for hybrid topology networking are costly to purchase and maintain. The cost of this topology is higher in comparison to the other topologies. The hubs used to connect two distinct networks are expensive. These hubs are not the same as usual hubs since they have to be smart enough to work with different architectures and should be able to operate even when a portion of network is down.
  5. 5. d. Ring topology Advantages of Ring Topology 1) This type of network topology is very organized. Each node gets to send the data when it receives an empty token. This helps to reduces chances of collision. Also in ring topology all the traffic flows in only one direction at very high speed. 2) Even when the load on the network increases, its performance is better than that of Bus topology. Disadvantages of Ring Topology 1) Network is highly dependent on the wire which connects different components. 2) Each packet of data must pass through all the computers between source and destination. This makes it slower than Star topology.
  6. 6. REFERENCE: 1. http://www.businessdictionary.com/definition/extranet.html 2. https://simplicable.com/new/extranet 3. https://www.tutor2u.net/business/ict/intro_information_sources.htm 4.

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