22. OCR GCSE (J277) 1.2 Compression

Ava is trying to send a large video file to Eesha and Noah via email, but the file is too large. What should Ava do to make the file smaller so it can be sent?

• Slow down the data transfer

• Increase the size of the file

• Decrease the storage capacity of her device

• Compress the file to reduce its size

Leo, Lily, and Priya are working on a school project where they need to include images, sound, and video. Which type of compression should they use for these multimedia elements?

• Both types of compression

• Lossless compression

• Lossy compression

• No compression needed

Amelia is working on a project where she needs to compress some image files. She is considering using lossy compression. What could be the main drawback of Amelia using lossy compression for her project?

• It will increase the size of her image files

• It will reduce the quality of her images

• It is not suitable for any type of data she has

• It is less effective than the lossless compression method that Priya and Arthur are using

Lily is working on a project where she needs to store a large number of documents and executable files. She wants to ensure that no data is lost in the process. Which type of compression should she use?

• Lossy compression

• Lossless compression

• No compression needed

• Both types of compression

William is working on a project where he needs to send a large video file over email. He decides to use lossy compression. What will be the effect of this on the file size?

• Greatly reduces the file size

• Slightly reduces the file size

• Increases the file size

• Does not affect the file size

Ishaan is working on a project where he needs to compress some data without losing any information. Rosie suggests using lossless compression. For which type of data would this method be most suitable?

• All types of data

• Images and video

• Sound and music

• Documents and executable files

Thomas is working on a project where he needs to store a large amount of data without losing any information. Which advantage of lossless compression would be most beneficial to him?

• It reduces the quality of the image or sound

• It greatly reduces the file size

• It can be used for all types of data

• It is less effective than lossy compression

Eesha is working on a project where she needs to compress some data. She is wondering what determines the type of compression that can be used for her data. Charlie suggests it's the file size, Matilda thinks it's the internet speed, and another friend suggests it's the type of storage device. Eesha, however, believes it's the type of data. Who is correct?

• Charlie - File size

• Matilda - Internet speed

• Friend - Type of storage device

• Eesha - Type of data

Arjun is uploading his vacation photos to a cloud storage. He decides to use lossy compression for his images. What could be the main reason for Arjun's decision?

• He wants to improve the quality of his photos

• He wants to increase the size of his photos

• He wants to reduce the quality of his photos

• He wants to reduce the file size and upload time