Daily Practice · GCSE Computer Science
September 1995 - GCSE Computer Science 5-a-day
Every sheet in September 1995
The same date always regenerates the same five questions, so a sheet you print today is the sheet a classmate prints tomorrow.
- 1st September 1995State the key difference between a procedure and a function.
- 2nd September 1995State the typical maximum capacity of a single-layer DVD.
- 3rd September 1995Give two reasons why network communication is divided into layers.
- 4th September 1995State what is meant by a syntax error.
- 5th September 1995Give one advantage of a relational database over a flat-file database.
- 6th September 1995What type of utility software reorganises files on a hard disk so fragmented parts are stored closer together?
- 7th September 1995Calculate the maximum number of comparisons required by a binary search on a sorted list of 512 items.
- 8th September 1995Given P = 0 and Q = 1, state the value of P OR Q.
- 9th September 1995Convert the hexadecimal number 3F to denary.
- 10th September 1995A 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.
- 11th September 1995Explain why an interpreter is often preferred while a program is being written.
- 12th September 1995Convert the 4-bit binary number 1101 to denary.
- 13th September 1995Two 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.
- 14th September 1995State why an organisation might employ penetration testers to test its network.
- 15th September 1995A 2D array grid is declared as grid[4][6]. State how many rows and columns it has and how many elements it holds in total.
- 16th September 1995State one example of a file format that commonly uses lossy compression.
- 17th September 1995State how many bits are in one byte, and how many bytes are in one kibibyte (KiB).
- 18th September 1995State whether the source code of proprietary (closed source) software is normally available for the public to view.
- 19th September 1995Write one line of pseudocode that converts the string stored in heightInput into a real number and stores it in a variable called height.
- 20th September 1995A 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.
- 21st September 1995Order these units of data from smallest to largest: megabyte, byte, gigabyte, kilobyte.
- 22nd September 1995State the layer that IP operates in, and describe its job.
- 23rd September 1995Give one example of erroneous test data for a field that only accepts whole numbers from 1 to 10.
- 24th September 1995A table called bookings has fields bookingId, customerName and eventDate. Write an SQL statement that deletes the booking with bookingId 45.
- 25th September 1995Each 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.
- 26th September 1995Which flowchart symbol shape is used to represent a decision point (e.g. a yes/no branch)?
- 27th September 1995State the two values a Boolean data type can hold.
- 28th September 1995Convert the denary number 39 to an 8-bit binary number, showing your working.
- 29th September 1995Calculate the number of cables needed to connect 8 computers in a full mesh topology, where every computer connects directly to every other computer.
- 30th September 1995Describe what syntax highlighting is and how it helps a programmer.