Daily Practice · GCSE Computer Science
November 1966 5-a-day
Every sheet in November 1966
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st November 1966An array named temps holds 12 values. State the index of the first item and the index of the last item.
- 2nd November 1966A row of pixels is encoded using run-length encoding as: 3W 4B 3W. State the original row of pixels it represents.
- 3rd November 1966A photo file is 3.5 MB in size. Calculate its size in kilobytes (KB). Use 1 MB = 1000 KB.
- 4th November 1966A streaming company records which shows each user watches and uses this to recommend similar shows. Explain one ethical concern this could raise, even if the company only uses the data to improve recommendations.
- 5th November 1966State the most appropriate data type for storing a person's shoe size if only whole sizes (e.g. 7, 8, 9) are allowed.
- 6th November 1966Write 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.
- 7th November 1966Give one example of an optical secondary storage device.
- 8th November 1966State the difference between HTTP and HTTPS, and give one situation where HTTPS is essential.
- 9th November 1966State the term used for realistic data that a program would be expected to handle during normal use.
- 10th November 1966State what a foreign key is used for.
- 11th November 1966State the difference between lossy and lossless compression.
- 12th November 1966State the condition that must be met before a binary search can be used on an array.
- 13th November 1966A logic circuit has inputs C and D. C feeds into a NOT gate; the output of the NOT gate and D feed into an OR gate, giving output Y. Write the Boolean expression for Y and state its value when C = 1 and D = 0.
- 14th November 1966A 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.
- 15th November 1966Which piece of network hardware connects a LAN to another network such as the internet, directing data packets based on IP address?
- 16th November 1966State why a program written in a high level language must be translated.
- 17th November 1966Convert the denary number 45 to hexadecimal.
- 18th November 1966What does the acronym CPU stand for?
- 19th November 1966State what the term malware means.
- 20th November 1966Describe what a nested loop does when it processes a 2D array.
- 21st November 1966An uncompressed file is 6000 KB. After lossless compression it is 1500 KB. Calculate the compression ratio in the form n:1 (original size : compressed size).
- 22nd November 1966Which of RAM and ROM is volatile, meaning its contents are lost when the power is removed?
- 23rd November 1966Which piece of UK legislation controls how organisations must store and use people's personal data?
- 24th November 1966Given x = 5 and y = 8, state whether x < y AND x > 0 evaluates to True or False.
- 25th November 1966State the value returned by LENGTH(word) if word stores the string 'Computer'.
- 26th November 1966Give one reason why RAM on its own is not enough, and a computer also needs secondary storage.
- 27th November 1966Give two reasons why network communication is divided into layers.
- 28th November 1966A password field requires between 6 and 12 characters. State two boundary data values that should be used to test this field.
- 29th November 1966A 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.
- 30th November 1966State one function carried out by the operating system of a computer.