Daily Practice · GCSE Computer Science
October 1969 5-a-day
Every sheet in October 1969
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st October 1969A mono sound clip has a sample rate of 4000 Hz and lasts 2 seconds. Calculate the total number of samples taken.
- 2nd October 1969State the type of program that is typically stored in ROM.
- 3rd October 1969State one reason a small business might choose to use open source software instead of proprietary (closed source) software.
- 4th October 1969A FOR loop runs: total = 0, FOR i = 1 TO 4, total = total + i, NEXT i. State the value of total after the loop finishes.
- 5th October 1969Write 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.
- 6th October 1969State the typical maximum capacity of a single-layer DVD.
- 7th October 1969State the difference between HTTP and HTTPS, and give one situation where HTTPS is essential.
- 8th October 1969State what is meant by a syntax error.
- 9th October 1969State what a foreign key is used for.
- 10th October 1969What type of utility software reorganises files on a hard disk so fragmented parts are stored closer together?
- 11th October 1969Calculate the maximum number of comparisons required by a binary search on a sorted list of 512 items.
- 12th October 1969Given P = 0 and Q = 1, state the value of P OR Q.
- 13th October 1969A 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.
- 14th October 1969A 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.
- 15th October 1969State why a program written in a high level language must be translated.
- 16th October 1969Convert the 4-bit binary number 1101 to denary.
- 17th October 1969Two 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.
- 18th October 1969State why an organisation might employ penetration testers to test its network.
- 19th October 1969Describe what a nested loop does when it processes a 2D array.
- 20th October 1969State one example of a file format that commonly uses lossy compression.
- 21st October 1969State how many bits are in one byte, and how many bytes are in one kibibyte (KiB).
- 22nd October 1969State whether the source code of proprietary (closed source) software is normally available for the public to view.
- 23rd October 1969Write one line of pseudocode that converts the string stored in heightInput into a real number and stores it in a variable called height.
- 24th October 1969State the value returned by LENGTH(word) if word stores the string 'Computer'.
- 25th October 1969Order these units of data from smallest to largest: megabyte, byte, gigabyte, kilobyte.
- 26th October 1969Give two reasons why network communication is divided into layers.
- 27th October 1969Give one example of erroneous test data for a field that only accepts whole numbers from 1 to 10.
- 28th October 1969A 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.
- 29th October 1969Each 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.
- 30th October 1969Which flowchart symbol shape is used to represent a decision point (e.g. a yes/no branch)?
- 31st October 1969State the two values a Boolean data type can hold.