Daily Practice · GCSE Computer Science
November 1992 - GCSE Computer Science 5-a-day
Every sheet in November 1992
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st November 1992Convert the denary number 5 to a 4-bit binary number.
- 2nd November 1992A CPU has a clock speed of 4.0 GHz. Calculate how many clock cycles it completes in 2 seconds.
- 3rd November 1992A 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.
- 4th November 1992Trace 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).
- 5th November 1992A mono sound clip has a sample rate of 4000 Hz and lasts 2 seconds. Calculate the total number of samples taken.
- 6th November 1992State the type of program that is typically stored in ROM.
- 7th November 1992State one reason a small business might choose to use open source software instead of proprietary (closed source) software.
- 8th November 1992A FOR loop runs: total = 0, FOR i = 1 TO 4, total = total + i, NEXT i. State the value of total after the loop finishes.
- 9th November 1992Give one specific way this code could be refined without changing what it does: a = 5, b = 3, c = a + b, PRINT c
- 10th November 1992State the typical maximum capacity of a single-layer DVD.
- 11th November 1992Explain the role of TCP when a large file is downloaded.
- 12th November 1992State what is meant by a syntax error.
- 13th November 1992A 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.
- 14th November 1992What type of utility software reorganises files on a hard disk so fragmented parts are stored closer together?
- 15th November 1992Calculate the maximum number of comparisons required by a binary search on a sorted list of 512 items.
- 16th November 1992Given P = 0 and Q = 1, state the value of P OR Q.
- 17th November 1992Convert the hexadecimal number FF to an 8-bit binary number.
- 18th November 1992A 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.
- 19th November 1992Give one advantage and one disadvantage of using a compiler.
- 20th November 1992Convert the 4-bit binary number 1101 to denary.
- 21st November 1992Two 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.
- 22nd November 1992State why an organisation might employ penetration testers to test its network.
- 23rd November 1992Write a loop in pseudocode that outputs every element of a 1D array named names of length 6.
- 24th November 1992State one example of a file format that commonly uses lossy compression.
- 25th November 1992State how many bits are in one byte, and how many bytes are in one kibibyte (KiB).
- 26th November 1992State whether the source code of proprietary (closed source) software is normally available for the public to view.
- 27th November 1992Write one line of pseudocode that converts the string stored in heightInput into a real number and stores it in a variable called height.
- 28th November 1992State the correct order of the three operations used to read data from a text file.
- 29th November 1992Order these units of data from smallest to largest: megabyte, byte, gigabyte, kilobyte.
- 30th November 1992A user reads the same email on a phone and a tablet, and deleting it on one deletes it on the other. Which protocol is in use and why?