Question 2, May 2019, Pearson Edexcel International GCSE (9-1) Information and Communication Technology, Paper-1

Zara uses her tablet computer to watch TV online.

(a) Describe the function of a router. (2)

A router stores the addresses of all devices that are connected to it so that it can forward network traffic to its destination using the quickest route.

(b) State two benefits to Zara of online TV. (2)

1 You may wish to watch it on demand, 24/7 and can be interacted with.

2 Online TV also allow you to rewind and re-watch a scene you particularly like.

(c) Zara streams an online video. She sees the notice shown in Figure 1.

Describe what has happened to Zara. (4)

Zara's tablet computer is infected by a ransomware which is a malicious software that has been downloaded, encrypting her files using a key. It places restrictions on her access to online video until money is paid. It puts pressure on her to act before she has time to think clearly about the threat and how to manage it.

(d) Give two benefits to Zara of connecting her tablet computer to her television. (2)

1 Zara can watch video on a bigger screen which has high resolution.

2 She can minimize 'eye strain' by using larger screen.

(e) Zara uses a PIN to unlock her tablet computer.

List three other methods she could use to prevent unauthorized access to her data. (3)

1 Zara could use password, which is used to authenticate a user, to prevent unauthorized access to her data.

2 She could use encryption to scramble data so that unauthorized users are prevented from being able to understand it.

3 She could use fingerprint recognition to check whether the person being scanned is the authorized user.

(f) Explain one advantage of using hosted applications with tablet computers. (2)

Hosted applications take up less storage or memory because they don't have to be installed onto the tablet. They are stored online so users can collaborate in real time.

(g) Explain one advantage of using locally installed applications. (2)

Locally installed applications run faster without lag because the data is immediately accessible or no connectivity is required. They have more unique features because resources are available on the local machine.

(Total for Question 2 = 17 marks)


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