Daily Practice · GCSE Computer Science
November 2021 - GCSE Computer Science 5-a-day
Every GCSE Computer Science sheet published in November 2021, with answers. Systems, data representation, networks, algorithms and programming.
Every sheet in November 2021
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st November 2021Give one reason why RAM on its own is not enough, and a computer also needs secondary storage.
- 2nd November 2021State the difference between HTTP and HTTPS, and give one situation where HTTPS is essential.
- 3rd November 2021A password field requires between 6 and 12 characters. State two boundary data values that should be used to test this field.
- 4th November 2021A table called books has fields bookId, title, authorId and copiesAvailable. Write an SQL statement that selects the title of every book with more than 2 copies available.
- 5th November 2021State one function carried out by the operating system of a computer.
- 6th November 2021In computational thinking, what is meant by the term 'decomposition'?
- 7th November 2021Given A = 1 and B = 1, state the value of A AND B.
- 8th November 2021State how many different values can be represented using 5 bits, and explain your reasoning.
- 9th November 2021Define a peer-to-peer network.
- 10th November 2021State why a program written in a high level language must be translated.
- 11th November 2021Convert the denary number 5 to a 4-bit binary number.
- 12th November 2021A CPU has a clock speed of 4.0 GHz. Calculate how many clock cycles it completes in 2 seconds.
- 13th November 2021A 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.
- 14th November 2021Describe what a nested loop does when it processes a 2D array.
- 15th November 2021A mono sound clip has a sample rate of 4000 Hz and lasts 2 seconds. Calculate the total number of samples taken.
- 16th November 2021State the type of program that is typically stored in ROM.
- 17th November 2021State one reason a small business might choose to use open source software instead of proprietary (closed source) software.
- 18th November 2021A FOR loop runs: total = 0, FOR i = 1 TO 4, total = total + i, NEXT i. State the value of total after the loop finishes.
- 19th November 2021State the key difference between a procedure and a function.
- 20th November 2021State the typical maximum capacity of a single-layer DVD.
- 21st November 2021Give two reasons why network communication is divided into layers.
- 22nd November 2021State what is meant by a syntax error.
- 23rd November 2021Give one advantage of a relational database over a flat-file database.
- 24th November 2021What type of utility software reorganises files on a hard disk so fragmented parts are stored closer together?
- 25th November 2021Calculate the maximum number of comparisons required by a binary search on a sorted list of 512 items.
- 26th November 2021Given P = 0 and Q = 1, state the value of P OR Q.
- 27th November 2021Convert the hexadecimal number 3F to denary.
- 28th November 2021A 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.
- 29th November 2021Explain why an interpreter is often preferred while a program is being written.
- 30th November 2021Convert the 4-bit binary number 1101 to denary.