Key Advantages Of Using A Network Over Standalone Computers

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Nelson Information Technology VCE Units 1 & 2 Test your knowledge answers Chapter 2: Networks Communications 1 Describe the difference between an analog signal and a digital signal. A-1 An analog or analogue signal is any continuous signal for which the time varying feature (variable) and A digital signal is a physical signal that is a representation of a sequence 2 What is the function of a dial-up modem? A-2 Access a computer system or service remotely Networks 3 What is a network? How is a local area network (LAN) different from a wide area network (WAN)? A-3 A computer network is a network which allows computer to exchange data. A lan only covers small areas like schools, café, offices whereas WAN covers large geographical areas like…show more content…
A-11 Star topology is one of the most common network setups. In this setup all nodes are connected to the central server or computer and server and it also looks like a star. 12 What is an intranet? What benefits to organizations are there is setting up an Intranet? A-12 An intranet is a computer network that uses Internet Protocol technology to share information. Intranets restrict access to company information and facilities to employees. 13 Why do manufacturers of network hardware and software follow established Standards? A-13 Standards allow manufactures the combination of products from different manufacturers to create a customized system whereas without standards, only hardware and software’s from the same company could be used together. 14 Briefly describe how an Ethernet network transmits data. A-14 Ethernet networks use cables to transmit data. When a workstation on an Ethernet network wishes to transmit, it checks the network to see if it is not busy and the broadcasts a packet. If the packet is addressed to workstation #15, only workstation #15 will read it. If two workstations simultaneously check the network, find it is not busy and send packets at the same time, a collision occurs. When collision occurs a special signal travels over the network to indicate that it is ‘jammed’. 15 In what situations would the TCP/IP protocol be most useful? A-15 16 Explain the term packet switching. A-16 A mode of data transmission in which a
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