Daily Practice · GCSE Computer Science
August 1965 5-a-day
Every sheet in August 1965
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st August 1965Distinguish between the network security threats known as phishing and pharming.
- 2nd August 1965Write a loop in pseudocode that outputs every element of a 1D array named names of length 6.
- 3rd August 1965A row of pixels is encoded using run-length encoding as: 3W 4B 3W. State the original row of pixels it represents.
- 4th August 1965A photo file is 3.5 MB in size. Calculate its size in kilobytes (KB). Use 1 MB = 1000 KB.
- 5th August 1965A 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.
- 6th August 1965State the most appropriate data type for storing a person's shoe size if only whole sizes (e.g. 7, 8, 9) are allowed.
- 7th August 1965Write 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.
- 8th August 1965Give one example of an optical secondary storage device.
- 9th August 1965A 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?
- 10th August 1965State the term used for realistic data that a program would be expected to handle during normal use.
- 11th August 1965State what a foreign key is used for.
- 12th August 1965State the difference between lossy and lossless compression.
- 13th August 1965State the condition that must be met before a binary search can be used on an array.
- 14th August 1965A 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.
- 15th August 1965A 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.
- 16th August 1965Which piece of network hardware connects a LAN to another network such as the internet, directing data packets based on IP address?
- 17th August 1965Name the translator used for assembly language and describe how it differs from a compiler.
- 18th August 1965Convert the denary number 45 to hexadecimal.
- 19th August 1965What does the acronym CPU stand for?
- 20th August 1965State what the term malware means.
- 21st August 1965Explain what happens if a program tries to read index 5 of an array declared with 5 elements.
- 22nd August 1965An 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).
- 23rd August 1965Which of RAM and ROM is volatile, meaning its contents are lost when the power is removed?
- 24th August 1965Which piece of UK legislation controls how organisations must store and use people's personal data?
- 25th August 1965Given x = 5 and y = 8, state whether x < y AND x > 0 evaluates to True or False.
- 26th August 1965State the value returned by LENGTH(word) if word stores the string 'Computer'.
- 27th August 1965Give one reason why RAM on its own is not enough, and a computer also needs secondary storage.
- 28th August 1965Define the term protocol.
- 29th August 1965A password field requires between 6 and 12 characters. State two boundary data values that should be used to test this field.
- 30th August 1965A 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.
- 31st August 1965State one function carried out by the operating system of a computer.