Daily Practice · GCSE Computer Science
September 2004 - GCSE Computer Science 5-a-day
Every GCSE Computer Science sheet published in September 2004, with answers. Systems, data representation, networks, algorithms and programming.
Every sheet in September 2004
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st September 2004Give one reason why RAM on its own is not enough, and a computer also needs secondary storage.
- 2nd September 2004Name the four layers of the TCP/IP model in order from the one closest to the user.
- 3rd September 2004A password field requires between 6 and 12 characters. State two boundary data values that should be used to test this field.
- 4th September 2004A 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;
- 5th September 2004State one function carried out by the operating system of a computer.
- 6th September 2004In computational thinking, what is meant by the term 'decomposition'?
- 7th September 2004Given A = 1 and B = 1, state the value of A AND B.
- 8th September 2004Convert the 8-bit binary number 01011010 to denary.
- 9th September 2004Define a peer-to-peer network.
- 10th September 2004A 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.
- 11th September 2004Convert the denary number 5 to a 4-bit binary number.
- 12th September 2004A CPU has a clock speed of 4.0 GHz. Calculate how many clock cycles it completes in 2 seconds.
- 13th September 2004A 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 September 2004An array named temps holds 12 values. State the index of the first item and the index of the last item.
- 15th September 2004A mono sound clip has a sample rate of 4000 Hz and lasts 2 seconds. Calculate the total number of samples taken.
- 16th September 2004State the type of program that is typically stored in ROM.
- 17th September 2004State one reason a small business might choose to use open source software instead of proprietary (closed source) software.
- 18th September 2004A 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 September 2004Write the pseudocode header and body for a function called isAdult that takes one integer parameter called age and returns True if age is 18 or over.
- 20th September 2004State the typical maximum capacity of a single-layer DVD.
- 21st September 2004State the difference between HTTP and HTTPS, and give one situation where HTTPS is essential.
- 22nd September 2004State what is meant by a syntax error.
- 23rd September 2004State what a foreign key is used for.
- 24th September 2004What type of utility software reorganises files on a hard disk so fragmented parts are stored closer together?
- 25th September 2004Calculate the maximum number of comparisons required by a binary search on a sorted list of 512 items.
- 26th September 2004Given P = 0 and Q = 1, state the value of P OR Q.
- 27th September 2004A pseudocode algorithm is: count <- 0, x <- 10, WHILE x > 0, count <- count + 1, x <- x - 3, ENDWHILE, OUTPUT count. Complete a trace table for x and count, laid out as x | count, then state the value output.
- 28th September 2004A 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 September 2004State why a program written in a high level language must be translated.
- 30th September 2004Convert the 4-bit binary number 1101 to denary.