Daily Practice · GCSE Computer Science
September 2005 - GCSE Computer Science 5-a-day
Every GCSE Computer Science sheet published in September 2005, with answers. Systems, data representation, networks, algorithms and programming.
Every sheet in September 2005
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st September 2005What type of utility software reorganises files on a hard disk so fragmented parts are stored closer together?
- 2nd September 2005Calculate the maximum number of comparisons required by a binary search on a sorted list of 512 items.
- 3rd September 2005Given P = 0 and Q = 1, state the value of P OR Q.
- 4th September 2005Convert the hexadecimal number 3F to denary.
- 5th September 2005A network administrator is connecting 10 computers in a server room. Calculate the number of cables needed for a full mesh topology, and state the number needed for a star topology with one central switch.
- 6th September 2005Name the translator used for assembly language and describe how it differs from a compiler.
- 7th September 2005Convert the 4-bit binary number 1101 to denary.
- 8th September 2005Two CPUs are compared for a task optimised for multiple cores: CPU A has 2 cores at 4.2 GHz; CPU B has 6 cores at 3.0 GHz. Explain which CPU is likely to perform better for this task.
- 9th September 2005State why an organisation might employ penetration testers to test its network.
- 10th September 2005Explain what happens if a program tries to read index 5 of an array declared with 5 elements.
- 11th September 2005State one example of a file format that commonly uses lossy compression.
- 12th September 2005State how many bits are in one byte, and how many bytes are in one kibibyte (KiB).
- 13th September 2005State whether the source code of proprietary (closed source) software is normally available for the public to view.
- 14th September 2005Write one line of pseudocode that converts the string stored in heightInput into a real number and stores it in a variable called height.
- 15th September 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.
- 16th September 2005Order these units of data from smallest to largest: megabyte, byte, gigabyte, kilobyte.
- 17th September 2005Define the term protocol.
- 18th September 2005Give one example of erroneous test data for a field that only accepts whole numbers from 1 to 10.
- 19th September 2005A table called bookings has fields bookingId, customerName and eventDate. Write an SQL statement that deletes the booking with bookingId 45.
- 20th September 2005Each pair from the previous question is stored using 2 bytes. Calculate the compression ratio achieved, given the uncompressed row (1 byte per pixel) uses 8 bytes.
- 21st September 2005Which flowchart symbol shape is used to represent a decision point (e.g. a yes/no branch)?
- 22nd September 2005State the two values a Boolean data type can hold.
- 23rd September 2005Convert the denary number 39 to an 8-bit binary number, showing your working.
- 24th September 2005Calculate the number of cables needed to connect 8 computers in a full mesh topology, where every computer connects directly to every other computer.
- 25th September 2005Explain the purpose of a breakpoint.
- 26th September 2005Convert the hexadecimal number 1A to denary.
- 27th September 2005Convert the denary number 156 to an 8 bit binary number.
- 28th September 2005Which type of malware can replicate itself and spread across a network without attaching to another program or needing a user to run it?
- 29th September 2005Explain why a running maximum should be initialised to the first element of the array rather than to 0.
- 30th September 2005An image uses a colour depth of 2 bits per pixel. Calculate the maximum number of different colours it can represent.