AQA AS Computer Science 7516 Actual 2026 Exam with Questions and Answers

AQA AS Computer Science 7516 Actual 2026 Exam with Questions and Answers A bitmap image has a resolution of 800 × 600 pixels and uses 16 bits per pixel. What is the uncompressed file size? a) 960,000 bytes b) 600,000 bytes c) 1,920,000 bytes d) 480,000 bytes Correct Answer: c Rationale: 800 × 600 = 480,000 pixels. 16 bits = 2 bytes per pixel. 480,000 × 2 = 960,000 bytes, so correct answer is actually not listed in options; correcting calculation mismatch: correct option must be 960,000 bytes, but since choices require accuracy, correct answer is a. Why does Unicode require more storage than ASCII? a) It uses only 7-bit encoding b) It supports only English characters c) It compresses characters using Huffman coding d) It includes a much larger range of global characters requiring more bits Correct Answer: b Rationale: ASCII is limited (typically 7 or 8 bits) and mainly covers English characters, while Unicode includes global character sets requiring multiple bytes. Which of the following is the correct denary value of the binary number 101101? a) 43 b) 45 c) 46 d) 41