Daily Practice · GCSE Computer Science
May 1956 5-a-day
Every sheet in May 1956
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st May 1956State the type of program that is typically stored in ROM.
- 2nd May 1956State one reason a small business might choose to use open source software instead of proprietary (closed source) software.
- 3rd May 1956A FOR loop runs: total = 0, FOR i = 1 TO 4, total = total + i, NEXT i. State the value of total after the loop finishes.
- 4th May 1956State the pseudocode operator commonly used to join (concatenate) two strings, then show how it joins 'Rev' and 'ision' to produce 'Revision'.
- 5th May 1956State the typical maximum capacity of a single-layer DVD.
- 6th May 1956Give two reasons why network communication is divided into layers.
- 7th May 1956State what is meant by a syntax error.
- 8th May 1956Define the term 'primary key' as used in a database table.
- 9th May 1956What type of utility software reorganises files on a hard disk so fragmented parts are stored closer together?
- 10th May 1956Calculate the maximum number of comparisons required by a binary search on a sorted list of 512 items.
- 11th May 1956Given P = 0 and Q = 1, state the value of P OR Q.
- 12th May 1956Convert the 8-bit binary number 10110100 directly to hexadecimal by splitting it into nibbles.
- 13th May 1956A 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.
- 14th May 1956Explain why an interpreter is often preferred while a program is being written.
- 15th May 1956Convert the 4-bit binary number 1101 to denary.
- 16th May 1956Two 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.
- 17th May 1956State why an organisation might employ penetration testers to test its network.
- 18th May 1956A 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.
- 19th May 1956State one example of a file format that commonly uses lossy compression.
- 20th May 1956State how many bits are in one byte, and how many bytes are in one kibibyte (KiB).
- 21st May 1956State whether the source code of proprietary (closed source) software is normally available for the public to view.
- 22nd May 1956Write one line of pseudocode that converts the string stored in heightInput into a real number and stores it in a variable called height.
- 23rd May 1956A function is defined as: FUNCTION addTax(price) RETURN price x 1.2 ENDFUNCTION. Another line of code runs: total <- addTax(20) + addTax(30). Trace both function calls and state the final value of total.
- 24th May 1956Order these units of data from smallest to largest: megabyte, byte, gigabyte, kilobyte.
- 25th May 1956State the layer that IP operates in, and describe its job.
- 26th May 1956Give one example of erroneous test data for a field that only accepts whole numbers from 1 to 10.
- 27th May 1956A table called staff has fields staffId, name, department and salary, storing these records: staffId | name | department | salary, 1 | Ben | Sales | 24000, 2 | Chloe | IT | 31000, 3 | Dan | Sales | 27000. State which staffId(s) would be returned by: SELECT staffId FROM staff WHERE department = 'Sales' AND salary > 25000;
- 28th May 1956Each pair from the previous question is stored using 2 bytes. Calculate the compression ratio achieved, given the uncompressed row (1 byte per pixel) uses 8 bytes.
- 29th May 1956Which flowchart symbol shape is used to represent a decision point (e.g. a yes/no branch)?
- 30th May 1956State the two values a Boolean data type can hold.
- 31st May 1956Convert the 8-bit binary number 01011010 to denary.