Daily Practice · GCSE Computer Science
April 2005 - GCSE Computer Science 5-a-day
Every GCSE Computer Science sheet published in April 2005, with answers. Systems, data representation, networks, algorithms and programming.
Every sheet in April 2005
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st April 2005Give one advantage of a relational database over a flat-file database.
- 2nd April 2005State the difference between lossy and lossless compression.
- 3rd April 2005State the condition that must be met before a binary search can be used on an array.
- 4th April 2005A 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.
- 5th April 2005Convert the hexadecimal number 3F to denary.
- 6th April 2005Which piece of network hardware connects a LAN to another network such as the internet, directing data packets based on IP address?
- 7th April 2005Give one advantage and one disadvantage of using a compiler.
- 8th April 2005Convert the denary number 45 to hexadecimal.
- 9th April 2005What does the acronym CPU stand for?
- 10th April 2005State what the term malware means.
- 11th April 2005Write a loop in pseudocode that outputs every element of a 1D array named names of length 6.
- 12th April 2005An 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).
- 13th April 2005Which of RAM and ROM is volatile, meaning its contents are lost when the power is removed?
- 14th April 2005Which piece of UK legislation controls how organisations must store and use people's personal data?
- 15th April 2005Given x = 5 and y = 8, state whether x < y AND x > 0 evaluates to True or False.
- 16th April 2005A programmer wants any syntax error in their program to be reported before the program starts running at all. State whether a compiler or an interpreter behaves this way, and explain why.
- 17th April 2005Give one reason why RAM on its own is not enough, and a computer also needs secondary storage.
- 18th April 2005A 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?
- 19th April 2005A password field requires between 6 and 12 characters. State two boundary data values that should be used to test this field.
- 20th April 2005A table called bookings has fields bookingId, customerName and eventDate. Write an SQL statement that deletes the booking with bookingId 45.
- 21st April 2005State one function carried out by the operating system of a computer.
- 22nd April 2005In computational thinking, what is meant by the term 'decomposition'?
- 23rd April 2005Given A = 1 and B = 1, state the value of A AND B.
- 24th April 2005Convert the denary number 39 to an 8-bit binary number, showing your working.
- 25th April 2005Define a peer-to-peer network.
- 26th April 2005Name the translator used for assembly language and describe how it differs from a compiler.
- 27th April 2005Convert the denary number 5 to a 4-bit binary number.
- 28th April 2005A CPU has a clock speed of 4.0 GHz. Calculate how many clock cycles it completes in 2 seconds.
- 29th April 2005A simple cipher shifts every letter 2 places forward in the alphabet, wrapping around so Y becomes A and Z becomes B. Encrypt the plaintext CAT using this cipher.
- 30th April 2005Explain what happens if a program tries to read index 5 of an array declared with 5 elements.