Explain how the resolution of an image affect the size of the file. (3 marks)

1. Digital images can either be in the form of a bitmap image or vector graphic.

Identify two differences between a bitmap image and a vector graphic. ( 2 Marks)

1. Compression is often used to reduce the size of files before sending them electronically.

2. Describe one advantage for compressing files in this way. (2 marks)

1. Describe what is meant by lossy compression. (2 marks)

1. Describe what is meant by lossless compression. (2 marks)

How many bits in a byte?

(a)  

Organise these files types into the correct categories

1. Steve is a musician who would like to make use of technology to record some of his songs

Give one piece of hardware that can be used to input sound into a computer

1. When recording these songs, Steve needs to be aware of sampling frequency.

2. Explain how the sampling frequency may affect Steve’s recordings. (2 marks)

   
   

1. Computers use primary storage and secondary storage.

2. Explain why secondary storage is needed. (2 marks)

1. Data can be either externally or internally stored in secondary storage devices.

2. Name two external secondary storage devices. (2 marks)

Calculate how many bytes are in 3MB of data. You must show your working out. ( 2 marks)

The Parkwood Vale Insurance Company use cloud storage to store their data.

Other than being able to access the cloud from any device that has access to the Internet, explain the advantages and disadvantages of using cloud storage. ( 6 marks)

Wes has purchased a new smartphone so he can use Virtual Reality (VR) and Augmented Reality (AR).

Identify one difference between Virtual Reality and Augmented Reality. (1 mark)

State one digital device that uses voice interaction. ( 1 mark)

Describe how gesture interaction can be used in gaming. ( 2 marks)

Identify one advantage and one disadvantage of gesture interaction in gaming. ( 2 marks)