AQA A LEVEL COMPUTER SCIENCE
7517 BUNDLE 2026 COMPLETE
REVIEW MATERIAL WITH MARK
SCHEMES AND SOLVED QUESTIONS
GRADE A+
◉ Abstract data type (ADT). Answer: A conceptual model of how data
is organised and what operations can be performed on it (independent of
implementation).（抽象数据类型/模型/操作）
◉ Abstract syntax tree (AST). Answer: A tree representation of the key
constructs of source code, showing structure and order of evaluation.（
抽象语法树/语法结构/求值顺序）
◉ Abstraction. Answer: Removing unnecessary detail so the main
processes/structure can be identified and solved more easily.（抽象/去
细节/抓本质）
◉ Acceptable Use Policy. Answer: An agreement setting how users may
use organisation IT systems/network and what restrictions apply.（可接
受使用政策/AUP/使用规则）
◉ Accepting state. Answer: A state reached when a valid string is input
(in an automaton).（接受状态/有效字符串）
,◉ Access modifiers. Answer: Keywords controlling access to class
members, e.g. public/private/protected.（访问修饰符/封装）
◉ Access speed. Answer: How fast data can be read from or written to a
storage device.（访问速度/读写速度）
◉ Accessibility. Answer: Removing barriers so people can access and
interact with products/services/environments.（无障碍/可访问性）
◉ Address bus. Answer: Pathway carrying memory addresses for
reads/writes to main memory.（地址总线/传地址）
◉ Address bus width. Answer: Number of lines in the address bus;
determines how much memory can be addressed.（地址总线宽度/可寻
址空间）
◉ Addressing mode. Answer: Part of an instruction specifying how to
interpret the operand.（寻址方式/操作数解释）
◉ Adjacency list. Answer: A list of nodes with lists of their
neighbouring (adjacent) nodes.（邻接表/图结构）
,◉ Adjacency matrix. Answer: A 2D array used to store graph
connectivity/weights.（邻接矩阵/二维数组）
◉ ADSL. Answer: Asymmetric Digital Subscriber Line; uses phone
lines with faster download than upload.（非对称数字用户线/电话线宽
带）
◉ Aggregation. Answer: "Has-a" relationship between classes where
objects can exist independently.（聚合/has-a/可独立）
◉ Agile methodology. Answer: A development approach managing the
SDLC iteratively with flexibility and feedback.（敏捷开发/迭代/反馈
）
◉ Algorithm. Answer: A finite, well-defined sequence of steps to
complete a task.（算法/有限步骤）
◉ ALU. Answer: Arithmetic Logic Unit; performs arithmetic and
logical comparisons in the CPU.（算术逻辑单元/ALU）
◉ Amplitude. Answer: Height of an analogue wave from rest level; for
sound, relates to volume.（振幅/音量）
, ◉ Analogue. Answer: A continuously varying signal over time (e.g.
sound wave).（模拟信号/连续）
◉ AND. Answer: Boolean operation: True only if both inputs are True.
（与/逻辑与）
◉ Anomaly. Answer: A deviation that doesn't fit the usual pattern/rule.
（异常/偏离）
◉ Anti-malware. Answer: Software that detects and removes malware.
（反恶意软件/查杀）
◉ Append mode. Answer: File mode that writes extra data at the end
without erasing existing contents.（追加模式/文件末尾）
◉ Append operator (++). Answer: Adds item(s) to the end of a list.（追
加运算符/列表末尾）
◉ Application software. Answer: End-user software for tasks like
documents, email, etc.（应用软件/应用程序）
7517 BUNDLE 2026 COMPLETE
REVIEW MATERIAL WITH MARK
SCHEMES AND SOLVED QUESTIONS
GRADE A+
◉ Abstract data type (ADT). Answer: A conceptual model of how data
is organised and what operations can be performed on it (independent of
implementation).（抽象数据类型/模型/操作）
◉ Abstract syntax tree (AST). Answer: A tree representation of the key
constructs of source code, showing structure and order of evaluation.（
抽象语法树/语法结构/求值顺序）
◉ Abstraction. Answer: Removing unnecessary detail so the main
processes/structure can be identified and solved more easily.（抽象/去
细节/抓本质）
◉ Acceptable Use Policy. Answer: An agreement setting how users may
use organisation IT systems/network and what restrictions apply.（可接
受使用政策/AUP/使用规则）
◉ Accepting state. Answer: A state reached when a valid string is input
(in an automaton).（接受状态/有效字符串）
,◉ Access modifiers. Answer: Keywords controlling access to class
members, e.g. public/private/protected.（访问修饰符/封装）
◉ Access speed. Answer: How fast data can be read from or written to a
storage device.（访问速度/读写速度）
◉ Accessibility. Answer: Removing barriers so people can access and
interact with products/services/environments.（无障碍/可访问性）
◉ Address bus. Answer: Pathway carrying memory addresses for
reads/writes to main memory.（地址总线/传地址）
◉ Address bus width. Answer: Number of lines in the address bus;
determines how much memory can be addressed.（地址总线宽度/可寻
址空间）
◉ Addressing mode. Answer: Part of an instruction specifying how to
interpret the operand.（寻址方式/操作数解释）
◉ Adjacency list. Answer: A list of nodes with lists of their
neighbouring (adjacent) nodes.（邻接表/图结构）
,◉ Adjacency matrix. Answer: A 2D array used to store graph
connectivity/weights.（邻接矩阵/二维数组）
◉ ADSL. Answer: Asymmetric Digital Subscriber Line; uses phone
lines with faster download than upload.（非对称数字用户线/电话线宽
带）
◉ Aggregation. Answer: "Has-a" relationship between classes where
objects can exist independently.（聚合/has-a/可独立）
◉ Agile methodology. Answer: A development approach managing the
SDLC iteratively with flexibility and feedback.（敏捷开发/迭代/反馈
）
◉ Algorithm. Answer: A finite, well-defined sequence of steps to
complete a task.（算法/有限步骤）
◉ ALU. Answer: Arithmetic Logic Unit; performs arithmetic and
logical comparisons in the CPU.（算术逻辑单元/ALU）
◉ Amplitude. Answer: Height of an analogue wave from rest level; for
sound, relates to volume.（振幅/音量）
, ◉ Analogue. Answer: A continuously varying signal over time (e.g.
sound wave).（模拟信号/连续）
◉ AND. Answer: Boolean operation: True only if both inputs are True.
（与/逻辑与）
◉ Anomaly. Answer: A deviation that doesn't fit the usual pattern/rule.
（异常/偏离）
◉ Anti-malware. Answer: Software that detects and removes malware.
（反恶意软件/查杀）
◉ Append mode. Answer: File mode that writes extra data at the end
without erasing existing contents.（追加模式/文件末尾）
◉ Append operator (++). Answer: Adds item(s) to the end of a list.（追
加运算符/列表末尾）
◉ Application software. Answer: End-user software for tasks like
documents, email, etc.（应用软件/应用程序）
