AS & A Level Computer Science (9618) — May–June 2023, Paper 31
12 questions · every question answerable online with instant point-by-point AI marking against the official mark scheme.
Start with Question 1 →Numbers are stored in two different computer systems by using floating-point representation. System 1 uses: - 10 bits for the mantissa - 6 bits for the exponent - two's complement…
Answer this question and get it marked →Draw one line from each machine learning category to its most appropriate description. Machine learning categories: - Supervised learning - Reinforcement learning - Deep learning…
Answer this question and get it marked →A hashing algorithm is used to calculate storage locations for records in a random access file. It calculates hash values by using the function modulus 3. The function modulus…
Answer this question and get it marked →Two descriptions of user-defined data types are given. Give appropriate type declaration statements for each, including appropriate names. A data type to hold a set of prime…
Answer this question and get it marked →State, with a reason, where it would be appropriate to use circuit switching.
Answer this question and get it marked →State whether each of the following passwords is valid or invalid and give a reason for your choice. DPAD99$ DAD95 ADY123?
Answer this question and get it marked →Complete the Karnaugh map (K-map) for the following Boolean expression. Z = A'.B'.C'.D' + A'.B'.C'.D + A'.B.C'.D' + A'.B.C'.D + A.B.C'.D' + A.B.C'.D (where X' denotes NOT X, i.e.…
Answer this question and get it marked →Outline the characteristics of massively parallel computers.
Answer this question and get it marked →Encryption is used to alter data into a form that makes it meaningless if intercepted. Describe the purpose of asymmetric key cryptography.
Answer this question and get it marked →The pseudocode algorithm shown copies an active accounts text file ActiveFile.txt to an archive accounts text file ArchiveFile.txt, one line at a time. Any blank lines found in…
Answer this question and get it marked →Write the pseudocode to declare MaxSize, FrontPointer, RearPointer, Length and Queue.
Answer this question and get it marked →Describe what is meant by recursion.
Answer this question and get it marked →