Daily Practice · GCSE Computer Science
August 1960 5-a-day
Every sheet in August 1960
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st August 1960An 8-bit register stores the value 01100000 (denary 96). State the resulting 8-bit binary value after a left shift by 1 place, and state whether an overflow occurs.
- 2nd August 1960Which CPU register holds the address of the next instruction to be fetched?
- 3rd August 1960Distinguish between the network security threats known as phishing and pharming.
- 4th August 1960Explain why a running maximum should be initialised to the first element of the array rather than to 0.
- 5th August 1960A row of pixels is encoded using run-length encoding as: 3W 4B 3W. State the original row of pixels it represents.
- 6th August 1960A photo file is 3.5 MB in size. Calculate its size in kilobytes (KB). Use 1 MB = 1000 KB.
- 7th August 1960A 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.
- 8th August 1960State the most appropriate data type for storing a person's shoe size if only whole sizes (e.g. 7, 8, 9) are allowed.
- 9th August 1960Write 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.
- 10th August 1960Give one example of an optical secondary storage device.
- 11th August 1960Name the four layers of the TCP/IP model in order from the one closest to the user.
- 12th August 1960State the term used for realistic data that a program would be expected to handle during normal use.
- 13th August 1960State what a foreign key is used for.
- 14th August 1960State the difference between lossy and lossless compression.
- 15th August 1960State the condition that must be met before a binary search can be used on an array.
- 16th August 1960A 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.
- 17th August 1960A 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.
- 18th August 1960Which piece of network hardware connects a LAN to another network such as the internet, directing data packets based on IP address?
- 19th August 1960A 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.
- 20th August 1960Convert the denary number 45 to hexadecimal.
- 21st August 1960What does the acronym CPU stand for?
- 22nd August 1960State what the term malware means.
- 23rd August 1960An array named temps holds 12 values. State the index of the first item and the index of the last item.
- 24th August 1960An 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).
- 25th August 1960Which of RAM and ROM is volatile, meaning its contents are lost when the power is removed?
- 26th August 1960Which piece of UK legislation controls how organisations must store and use people's personal data?
- 27th August 1960Given x = 5 and y = 8, state whether x < y AND x > 0 evaluates to True or False.
- 28th August 1960State the value returned by LENGTH(word) if word stores the string 'Computer'.
- 29th August 1960Give one reason why RAM on its own is not enough, and a computer also needs secondary storage.
- 30th August 1960State the difference between HTTP and HTTPS, and give one situation where HTTPS is essential.
- 31st August 1960A password field requires between 6 and 12 characters. State two boundary data values that should be used to test this field.