Explain why a computer may need virtual memory and one drawback.
From Paper 1: Computer systems
2(c)3 marks
Recommend a type of secondary storage for a school's daily backup of 6 TB of data. Justify your answer.
From Paper 1: Computer systems
2(d)2 marks
How many 600 MB videos can be stored on a 2 TB drive? Show your working (use 1 TB = 1,000 GB = 1,000,000 MB).
From Paper 1: Computer systems
2(e)1 mark
Convert denary 200 to 8-bit binary.
From Paper 1: Computer systems
2(f)1 mark
Convert hexadecimal A7 to denary.
From Paper 1: Computer systems
2(g)2 marks
Add 11010110 and 01100101 in 8-bit binary and explain the result.
From Paper 1: Computer systems
2(h)2 marks
State the result of a right shift of 3 places on 01101000 and its effect.
From Paper 1: Computer systems
2(i)2 marks
Explain how characters are represented using a character set.
From Paper 1: Computer systems
2(j)3 marks
Explain what metadata is stored with an image and why it is needed.
From Paper 1: Computer systems
2(k)3 marks
Explain how increasing the sample rate affects a sound file.
From Paper 1: Computer systems
2(l)2 marks
Explain one reason for compressing a file before emailing it.
Score 0 / 26 · 0 of 12 marked
This paper is written by Plasmo in the style of the OCR GCSE Computer Science exam. It is not a past paper and is not produced or endorsed by the exam board.