Daily Practice · GCSE Computer Science
March 1959 5-a-day
Every sheet in March 1959
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st March 1959What type of utility software reorganises files on a hard disk so fragmented parts are stored closer together?
- 2nd March 1959Calculate the maximum number of comparisons required by a binary search on a sorted list of 512 items.
- 3rd March 1959Given P = 0 and Q = 1, state the value of P OR Q.
- 4th March 1959Convert the hexadecimal number FF to an 8-bit binary number.
- 5th March 1959A 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.
- 6th March 1959A program compiles and runs but always outputs an average that is too small. State the type of error and explain why the translator did not report it.
- 7th March 1959Convert the 4-bit binary number 1101 to denary.
- 8th March 1959Two 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.
- 9th March 1959State why an organisation might employ penetration testers to test its network.
- 10th March 1959An array named temps holds 12 values. State the index of the first item and the index of the last item.
- 11th March 1959State one example of a file format that commonly uses lossy compression.
- 12th March 1959State how many bits are in one byte, and how many bytes are in one kibibyte (KiB).
- 13th March 1959State whether the source code of proprietary (closed source) software is normally available for the public to view.
- 14th March 1959Write one line of pseudocode that converts the string stored in heightInput into a real number and stores it in a variable called height.
- 15th March 1959State the correct order of the three operations used to read data from a text file.
- 16th March 1959Order these units of data from smallest to largest: megabyte, byte, gigabyte, kilobyte.
- 17th March 1959State the difference between HTTP and HTTPS, and give one situation where HTTPS is essential.
- 18th March 1959Give one example of erroneous test data for a field that only accepts whole numbers from 1 to 10.
- 19th March 1959A table called products has fields productId, name, price and stock. Write an SQL statement that changes the price of the product with productId 7 to 15.99.
- 20th March 1959Each 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.
- 21st March 1959Which flowchart symbol shape is used to represent a decision point (e.g. a yes/no branch)?
- 22nd March 1959State the two values a Boolean data type can hold.
- 23rd March 1959Convert the denary number 200 to hexadecimal, showing your working.
- 24th March 1959Calculate the number of cables needed to connect 8 computers in a full mesh topology, where every computer connects directly to every other computer.
- 25th March 1959State why a program written in a high level language must be translated.
- 26th March 1959Convert the hexadecimal number 1A to denary.
- 27th March 1959Convert the denary number 156 to an 8 bit binary number.
- 28th March 1959Which type of malware can replicate itself and spread across a network without attaching to another program or needing a user to run it?
- 29th March 1959Describe what a nested loop does when it processes a 2D array.
- 30th March 1959An image uses a colour depth of 2 bits per pixel. Calculate the maximum number of different colours it can represent.
- 31st March 1959A CPU's cache has a hit rate of 80%. During a task the CPU makes 4000 requests for data. Calculate the number of cache hits and cache misses.