Daily Practice · GCSE Computer Science
May 1995 - GCSE Computer Science 5-a-day
Every sheet in May 1995
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st May 1995Explain why an interpreter is often preferred while a program is being written.
- 2nd May 1995Convert the denary number 5 to a 4-bit binary number.
- 3rd May 1995A CPU has a clock speed of 4.0 GHz. Calculate how many clock cycles it completes in 2 seconds.
- 4th May 1995A simple cipher shifts every letter 2 places forward in the alphabet, wrapping around so Y becomes A and Z becomes B. Encrypt the plaintext CAT using this cipher.
- 5th May 1995A 2D array grid is declared as grid[4][6]. State how many rows and columns it has and how many elements it holds in total.
- 6th May 1995A mono sound clip has a sample rate of 4000 Hz and lasts 2 seconds. Calculate the total number of samples taken.
- 7th May 1995State the type of program that is typically stored in ROM.
- 8th May 1995State one reason a small business might choose to use open source software instead of proprietary (closed source) software.
- 9th May 1995A FOR loop runs: total = 0, FOR i = 1 TO 4, total = total + i, NEXT i. State the value of total after the loop finishes.
- 10th May 1995Give one specific way this code could be refined without changing what it does: a = 5, b = 3, c = a + b, PRINT c
- 11th May 1995State the typical maximum capacity of a single-layer DVD.
- 12th May 1995State the layer that IP operates in, and describe its job.
- 13th May 1995State what is meant by a syntax error.
- 14th May 1995A table called members has fields memberId, firstName, lastName and joinYear. Write an SQL statement that adds a new record with memberId 12, firstName 'Priya', lastName 'Shah' and joinYear 2026.
- 15th May 1995What type of utility software reorganises files on a hard disk so fragmented parts are stored closer together?
- 16th May 1995Calculate the maximum number of comparisons required by a binary search on a sorted list of 512 items.
- 17th May 1995Given P = 0 and Q = 1, state the value of P OR Q.
- 18th May 1995Convert the hexadecimal number FF to an 8-bit binary number.
- 19th May 1995A network administrator is connecting 10 computers in a server room. Calculate the number of cables needed for a full mesh topology, and state the number needed for a star topology with one central switch.
- 20th May 1995Describe what syntax highlighting is and how it helps a programmer.
- 21st May 1995Convert the 4-bit binary number 1101 to denary.
- 22nd May 1995Two CPUs are compared for a task optimised for multiple cores: CPU A has 2 cores at 4.2 GHz; CPU B has 6 cores at 3.0 GHz. Explain which CPU is likely to perform better for this task.
- 23rd May 1995State why an organisation might employ penetration testers to test its network.
- 24th May 1995Trace this algorithm with data = [4, 9, 2, 9, 7] and state the final output. total = 0; count = 0; for i = 0 to 4: if data[i] > 5 then total = total + data[i] and count = count + 1; next i; print(total, count).
- 25th May 1995State one example of a file format that commonly uses lossy compression.
- 26th May 1995State how many bits are in one byte, and how many bytes are in one kibibyte (KiB).
- 27th May 1995State whether the source code of proprietary (closed source) software is normally available for the public to view.
- 28th May 1995Write one line of pseudocode that converts the string stored in heightInput into a real number and stores it in a variable called height.
- 29th May 1995State the correct order of the three operations used to read data from a text file.
- 30th May 1995Order these units of data from smallest to largest: megabyte, byte, gigabyte, kilobyte.
- 31st May 1995Explain the role of TCP when a large file is downloaded.