Perform an arithmetic shift right of two places on 11110000 and state the effect.
From Paper 1: Principles of computer science
2(d)2 marks
Explain what is meant by overflow.
From Paper 1: Principles of computer science
2(e)3 marks
A bitmap image is 1,024 × 768 pixels with 16-bit colour depth. Calculate its size in kibibytes (KiB).
From Paper 1: Principles of computer science
2(f)2 marks
Explain why lossless compression is used for text files.
From Paper 1: Principles of computer science
2(g)2 marks
Encrypt the word CAT using a Caesar cipher with a shift of 3, and state one weakness of this cipher.
Score 0 / 14 · 0 of 7 marked
This paper is written by Plasmo in the style of the Edexcel GCSE Computer Science exam. It is not a past paper and is not produced or endorsed by the exam board.
Data Exam Questions: Edexcel GCSE Computer Science | Plasmo