Daily Practice · GCSE Computer Science
November 1956 5-a-day
Every sheet in November 1956
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st November 1956Give one advantage and one disadvantage of using a compiler.
- 2nd November 1956An 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.
- 3rd November 1956Which CPU register holds the address of the next instruction to be fetched?
- 4th November 1956Distinguish between the network security threats known as phishing and pharming.
- 5th November 1956Write a loop in pseudocode that outputs every element of a 1D array named names of length 6.
- 6th November 1956A row of pixels is encoded using run-length encoding as: 3W 4B 3W. State the original row of pixels it represents.
- 7th November 1956A photo file is 3.5 MB in size. Calculate its size in kilobytes (KB). Use 1 MB = 1000 KB.
- 8th November 1956A 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.
- 9th November 1956State the most appropriate data type for storing a person's shoe size if only whole sizes (e.g. 7, 8, 9) are allowed.
- 10th November 1956Write 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.
- 11th November 1956Give one example of an optical secondary storage device.
- 12th November 1956A 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?
- 13th November 1956State the term used for realistic data that a program would be expected to handle during normal use.
- 14th November 1956State what a foreign key is used for.
- 15th November 1956State the difference between lossy and lossless compression.
- 16th November 1956State the condition that must be met before a binary search can be used on an array.
- 17th November 1956A 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.
- 18th November 1956A 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.
- 19th November 1956Which piece of network hardware connects a LAN to another network such as the internet, directing data packets based on IP address?
- 20th November 1956Name the translator used for assembly language and describe how it differs from a compiler.
- 21st November 1956Convert the denary number 45 to hexadecimal.
- 22nd November 1956What does the acronym CPU stand for?
- 23rd November 1956State what the term malware means.
- 24th November 1956Explain what happens if a program tries to read index 5 of an array declared with 5 elements.
- 25th November 1956An 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).
- 26th November 1956Which of RAM and ROM is volatile, meaning its contents are lost when the power is removed?
- 27th November 1956Which piece of UK legislation controls how organisations must store and use people's personal data?
- 28th November 1956Given x = 5 and y = 8, state whether x < y AND x > 0 evaluates to True or False.
- 29th November 1956State the value returned by LENGTH(word) if word stores the string 'Computer'.
- 30th November 1956Give one reason why RAM on its own is not enough, and a computer also needs secondary storage.