AQA A LEVEL COMPUTER SCIENCE
2024 MERGED QUESTION PAPERS
AND MARK SCHEMES COMPLETE
QUESTIONS AND VERIFIED
ANSWERS GRADED A+
◉ 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.
◉ Cipher text. Answer: Message data after it has been encrypted.
2024 MERGED QUESTION PAPERS
AND MARK SCHEMES COMPLETE
QUESTIONS AND VERIFIED
ANSWERS GRADED A+
◉ 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.
◉ Cipher text. Answer: Message data after it has been encrypted.
