Daily Practice · GCSE Computer Science
November 1963 5-a-day
Every sheet in November 1963
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st November 1963State the typical maximum capacity of a single-layer DVD.
- 2nd November 1963Define the term protocol.
- 3rd November 1963State what is meant by a syntax error.
- 4th November 1963Define the term 'primary key' as used in a database table.
- 5th November 1963What type of utility software reorganises files on a hard disk so fragmented parts are stored closer together?
- 6th November 1963Calculate the maximum number of comparisons required by a binary search on a sorted list of 512 items.
- 7th November 1963Given P = 0 and Q = 1, state the value of P OR Q.
- 8th November 1963Convert the 8-bit binary number 10110100 directly to hexadecimal by splitting it into nibbles.
- 9th November 1963A 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.
- 10th November 1963Explain the purpose of a breakpoint.
- 11th November 1963Convert the 4-bit binary number 1101 to denary.
- 12th November 1963Two 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.
- 13th November 1963State why an organisation might employ penetration testers to test its network.
- 14th November 1963Explain why a running maximum should be initialised to the first element of the array rather than to 0.
- 15th November 1963State one example of a file format that commonly uses lossy compression.
- 16th November 1963State how many bits are in one byte, and how many bytes are in one kibibyte (KiB).
- 17th November 1963State whether the source code of proprietary (closed source) software is normally available for the public to view.
- 18th November 1963Write one line of pseudocode that converts the string stored in heightInput into a real number and stores it in a variable called height.
- 19th November 1963A 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.
- 20th November 1963Order these units of data from smallest to largest: megabyte, byte, gigabyte, kilobyte.
- 21st November 1963Name the four layers of the TCP/IP model in order from the one closest to the user.
- 22nd November 1963Give one example of erroneous test data for a field that only accepts whole numbers from 1 to 10.
- 23rd November 1963A 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;
- 24th November 1963Each 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.
- 25th November 1963Which flowchart symbol shape is used to represent a decision point (e.g. a yes/no branch)?
- 26th November 1963State the two values a Boolean data type can hold.
- 27th November 1963Convert the 8-bit binary number 01011010 to denary.
- 28th November 1963Calculate the number of cables needed to connect 8 computers in a full mesh topology, where every computer connects directly to every other computer.
- 29th November 1963A 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.
- 30th November 1963Convert the hexadecimal number 1A to denary.