1- Identify two examples where an infrared wireless connection could be used.
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2. What do you think would happen if a buffer were not used when streaming data?
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3. A company creates websites using style sheets.
Describe another scenario that would allow an organisation to take advantage of the ability to scale up resources using cloud computing.
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EXAM-STYLE QUESTIONS
1 Explain the function of the presentation layer in the OSI model. [2]
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2 Explain the function of the network layer in the TCP/IP model. [2]
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3 William wants to create a network in his home that will connect three computers, a printer, a mobile tablet device and a mobile telephone. He wants to minimise the costs in setting up his network.
a Identify the network structure that would be suitable for William to use.
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Justify your choice. b Identify the components William will need to build the network and describe the role of each. [4]
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c William wants to use the network to stream videos and music. Explain the importance of bandwidth and bit rate for this purpose. [2] [Total 7]
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4 Identify two protocols that are used in the transmission of emails. Describe the role of each protocol in the process. [4]
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5 Describe how the sound required to make a telephone call is sent from one mobile device to another, using a mobile network. [4]
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6 Emily stores data about her customers on a server in a server room in her office building. Emily wants to keep the data more secure, so she installs a biometric device required to gain access to the server room. She also installs a firewall.
a Explain one advantage and one disadvantage of using a biometric device to secure access to the server room. [2]
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b Describe how the firewall will help keep the data safe. [4] [Total 6]
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7 Discuss the impact of implementing a disaster recovery plan for an organisation. [6]
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