2026 AQA A LEVEL COMPUTER SCIENCE
EXAMPREP MATERIAL SOLVED QUESTIONS
AND VERIFIED SOLUTIONS PREMIUM
COLLECTION
◉ Absolute Error. Answer: The difference between the actual number
and the nearest representable value.
◉ Abstract data type (ADT). Answer: A data type whose properties
are specified independently of any particular programming language.
◉ Abstraction. Answer: Representation that is arrived at by removing
unnecessary details.
◉ Aggregation. Answer: Relationship between two object types in
which one object type has a component which is of the other type.
◉ Ajax. Answer: Web technology that allows only the part of a web
page that needs updating to be fetched from the web server.
◉ Algorithm. Answer: A sequence of unambiguous instructions for
solving a problem. It can be represented as a Turing machine
program.
,◉ Application programming interface (API). Answer: A layer of
software that allows application programs to call on the services of
the operating system.
◉ Association. Answer: If the relationship is not inheritance and it is
not aggregation then it is an association.
◉ Asymptotic behaviour of f. Answer: It is the behaviour of the
function f(n) for very large values of n.
◉ Asynchronous serial data transmission. Answer: Transmission
system in which the sender and receiver have separate clocks which
are not kept synchronised. Instead, the clocks are synchronised
temporarily at the start of a transmission. The arrival of data cannot be
predicted by the receiver; s a start bit is used to signal the arrival of
data and to synchronise the transmitter and receiver temporarily.
◉ Attribute. Answer: A property or characteristic of an entity
(databases) or an object (OOP).
◉ Automation. Answer: Turning an abstraction into a form that can be
processed by a computer.
◉ Backus-Naur Form, (BNF). Answer: Backus-Naur Form, (BNF)
◉ Bandwidth. Answer: For a transmission medium, the range of
signal frequencies it may transmit.
, ◉ Base case. Answer: A value that has a solution which does not
involve any reference to the general case solution.
◉ Baseband system. Answer: A system that uses a single data channel
system in which the whole bandwidth of the transmission medium is
dedicated to one data channel at a time.
◉ Basic operation. Answer: The operation which contributes most to
the total running time.
◉ Baud rate. Answer: The rate at which signals on a wire may
change.
◉ Behaviours. Answer: The functions of the object or what the object
does.
◉ Bit rate. Answer: The number of bits transmitted per second
◉ Broadband. Answer: A multiple data channel system in which the
bandwidth of the transmission medium carries several data streams at
the same time.
◉ Bubble sort. Answer: A sorting algorithm where during a pass,
neighbouring values are compared and swapped. Passes are made
until no further swaps are needed.
EXAMPREP MATERIAL SOLVED QUESTIONS
AND VERIFIED SOLUTIONS PREMIUM
COLLECTION
◉ Absolute Error. Answer: The difference between the actual number
and the nearest representable value.
◉ Abstract data type (ADT). Answer: A data type whose properties
are specified independently of any particular programming language.
◉ Abstraction. Answer: Representation that is arrived at by removing
unnecessary details.
◉ Aggregation. Answer: Relationship between two object types in
which one object type has a component which is of the other type.
◉ Ajax. Answer: Web technology that allows only the part of a web
page that needs updating to be fetched from the web server.
◉ Algorithm. Answer: A sequence of unambiguous instructions for
solving a problem. It can be represented as a Turing machine
program.
,◉ Application programming interface (API). Answer: A layer of
software that allows application programs to call on the services of
the operating system.
◉ Association. Answer: If the relationship is not inheritance and it is
not aggregation then it is an association.
◉ Asymptotic behaviour of f. Answer: It is the behaviour of the
function f(n) for very large values of n.
◉ Asynchronous serial data transmission. Answer: Transmission
system in which the sender and receiver have separate clocks which
are not kept synchronised. Instead, the clocks are synchronised
temporarily at the start of a transmission. The arrival of data cannot be
predicted by the receiver; s a start bit is used to signal the arrival of
data and to synchronise the transmitter and receiver temporarily.
◉ Attribute. Answer: A property or characteristic of an entity
(databases) or an object (OOP).
◉ Automation. Answer: Turning an abstraction into a form that can be
processed by a computer.
◉ Backus-Naur Form, (BNF). Answer: Backus-Naur Form, (BNF)
◉ Bandwidth. Answer: For a transmission medium, the range of
signal frequencies it may transmit.
, ◉ Base case. Answer: A value that has a solution which does not
involve any reference to the general case solution.
◉ Baseband system. Answer: A system that uses a single data channel
system in which the whole bandwidth of the transmission medium is
dedicated to one data channel at a time.
◉ Basic operation. Answer: The operation which contributes most to
the total running time.
◉ Baud rate. Answer: The rate at which signals on a wire may
change.
◉ Behaviours. Answer: The functions of the object or what the object
does.
◉ Bit rate. Answer: The number of bits transmitted per second
◉ Broadband. Answer: A multiple data channel system in which the
bandwidth of the transmission medium carries several data streams at
the same time.
◉ Bubble sort. Answer: A sorting algorithm where during a pass,
neighbouring values are compared and swapped. Passes are made
until no further swaps are needed.
