📚 AS CIE Computer Science 2026 Exam Changes and Trends | AS CIE 计算机科学：2026年考试变化与趋势
The Cambridge International AS Level Computer Science syllabus (9618) is stepping into a new phase from 2026, introducing targeted updates that reflect the rapid evolution of technology and modern pedagogical priorities. These changes affect content, assessment structure, and the depth in which core concepts are examined. Understanding exactly what has been added, refined, or removed is essential for students and teachers aiming for high performance in the upcoming exams. This article provides a comprehensive examination of the 2026 syllabus adjustments, highlights emerging trends, and offers strategic guidance for mastering the new material.
剑桥国际 AS 级计算机科学大纲（9618）从 2026 年起进入新阶段，有针对性地更新了内容，以反映技术的快速演进和现代教学重点。这些变化涉及教学内容、评估结构以及核心概念的考查深度。准确把握新增、优化或删减的部分，对目标锁定高分的考生和教师至关重要。本文全面梳理 2026 年大纲的调整，揭示新出现的命题趋势，并提供掌握新内容的学习策略。
1. Overview of Syllabus Refresh for 2026 | 2026 年大纲更新总览
The 2026–2028 syllabus for AS Computer Science retains the familiar two-component structure: Paper 1 Theory Fundamentals and Paper 2 Fundamental Problem-solving and Programming Skills. However, Cambridge has introduced a series of subtle but significant modifications. These include the insertion of artificial intelligence topics into the ethics section, an updated taxonomy of network security threats, a stricter standardisation of pseudocode, and a clearer emphasis on using high-level programming languages in Paper 2. The number of learning objectives has been slightly rationalised, and some topics have been shifted to create a more coherent progression from AS to A Level.
2026–2028 年 AS 计算机科学大纲保留了熟悉的双卷结构：卷一理论基础和卷二基本问题解决与编程技能。但剑桥在多个方面做出了细微而关键的调整，包括在伦理部分新增人工智能话题，更新了网络安全威胁分类，统一了伪代码标准，并更明确地强调在卷二中使用高级编程语言。学习目标数量略有精简，部分主题被重新编排，以使 AS 到 A Level 的衔接更为顺畅。
2. Enhanced Focus on Artificial Intelligence Ethics | 加强人工智能伦理的考查
One of the headline changes in the 2026 syllabus is the inclusion of Artificial Intelligence within Section 7 (Ethics and Ownership). Students are now expected to explore the societal impact of AI, including bias in algorithms, accountability for autonomous decisions, job displacement, and data privacy concerns. Examination questions may present scenarios involving AI-driven systems and ask candidates to evaluate ethical dilemmas, applying frameworks of ownership and responsibility. This update aligns the qualification with global discourse on responsible AI.
2026 年大纲最显著的变化之一是在第 7 章（伦理与所有权）中纳入了人工智能内容。现在要求考生探讨 AI 的社会影响，包括算法偏差、自主决策的责任归属、工作岗位减少以及数据隐私等问题。考题可能给出 AI 驱动系统的应用场景，要求考生运用所有权和责任的框架评估伦理困境。这一更新使资格认证与全球对负责任 AI 的讨论保持同步。
3. Updated Communication and Network Security Topics | 更新的通信与网络安全主题
Section 2 (Communication) and Section 6 (Security, Privacy and Data Integrity) have undergone revision to reflect current threat landscapes. The syllabus now explicitly mentions ransomware, zero-day exploits, man-in-the-middle attacks, and social engineering tactics alongside traditional threats like viruses and worms. Furthermore, the principle of secure socket layer (SSL) and transport layer security (TLS) handshakes is explained in more detail, with emphasis on asymmetric and symmetric encryption roles. The curriculum also strengthens understanding of firewalls, intrusion detection systems, and security policies as layered defence strategies.
第 2 章（通信）和第 6 章（安全、隐私与数据完整性）经过修订，以体现当前威胁形势。大纲现在明确提及勒索软件、零日漏洞利用、中间人攻击和社会工程策略，同时保留了病毒和蠕虫等传统威胁。此外，安全套接层（SSL）和传输层安全（TLS）握手过程的原理被更详细地阐述，强调非对称和对称加密各自的作用。课程还加强了对防火墙、入侵检测系统以及作为分层防御策略的安全政策的理解。
4. Refined Algorithm Design and Pseudocode Standards | 精化的算法设计与伪代码规范
Cambridge has taken steps to standardise the notation used in pseudocode across all assessment materials. Candidates must now adhere to a precise set of conventions for variable assignment, conditional statements, loops, and function definitions. While variations are tolerated to some extent, greater consistency is expected, particularly in Paper 2 where writing and tracing pseudocode carries substantial weight. The syllabus also introduces a stronger emphasis on algorithmic efficiency, requiring students to identify O(n), O(log n), and O(n²) complexity classes and to compare algorithms in terms of time and space trade-offs.
剑桥已采取措施统一所有评估资料中使用的伪代码符号。考生现在必须遵循一套精确的赋值、条件语句、循环和函数定义规范。尽管一定程度的变通仍被接受，但期望更高的统一性，尤其在伪代码编写和追踪占比较重的卷二。大纲还加强了对算法效率的重视，要求考生能识别 O(n)、O(log n) 和 O(n²) 复杂度类别，并从时间和空间权衡的角度比较算法。
5. Deepening Programming and Problem-Solving in Paper 2 | 深化卷二的编程与问题解决
Paper 2 has always focused on practical programming skills, but from 2026 the expectation to produce, test, and debug code in a high-level language is explicitly embedded in the assessment objectives. While the pre-release material remains a key element, the external examination will increasingly ask candidates to write and evaluate code snippets under timed conditions. Python, Java, C# and VB.NET remain the permissible languages, but centres are encouraged to select a language that allows students to focus on logical constructs without unnecessary syntactic burden. The design of solutions using stepwise refinement and the ability to generate test data and trace tables are now assessed more directly.
卷二历来侧重实用编程技能，但从 2026 年起，用高级语言编写、测试和调试代码的期望被明确写入评估目标。虽然预发布材料仍然是关键要素，但外部考试将越来越多地要求考生在限时条件下编写和评估代码段。Python、Java、C# 和 VB.NET 仍是允许的语言，但鼓励学校选择能让学生专注于逻辑结构而免受不必要语法负担的语言。使用逐步求精设计解决方案以及生成测试数据和跟踪表的能力，现在被更直接地考查。
6. Emphasis on Data Structures and Abstract Data Types | 强调数据结构与抽象数据类型
Section 10 (Data Types and Structures) has been refined to include clear distinctions between static and dynamic data structures, with specific attention to linked lists, stacks, queues, and binary trees. The concept of abstract data types (ADTs) is now formally introduced at AS, requiring students to describe the operations of an ADT without referring to implementation details. Knowledge of how these structures are used to solve problems – such as using a stack for bracket matching or a queue for task scheduling – is explicitly tested. Additionally, file organisation and access methods, including serial, sequential, and direct access, are covered in greater depth.
第 10 章（数据类型与结构）经过优化，纳入了静态与动态数据结构的清晰区分，特别关注链表、栈、队列和二叉树。抽象数据类型（ADT）的概念现在正式引入 AS 阶段，要求考生能够描述 ADT 的操作而不涉及实现细节。如何运用这些结构解决问题——例如用栈进行括号匹配或用队列实现任务调度——被明确考查。此外，文件组织和访问方法（包括串行、顺序和直接访问）的讲授深度也得到加强。
7. Evolution in Processor Fundamentals and Hardware | 处理器基础与硬件的演变
The processor fundamentals section (Section 4) has been updated to include contemporary examples of instruction pipelines and interrupt handling in multicore systems. While the classic fetch–decode–execute cycle remains central, the syllabus now expects students to relate these concepts to performance metrics such as clock speed, cores, and cache size. Moreover, the treatment of hardware (Section 3) now includes solid-state storage technologies such as NVMe and M.2 interfaces, reflecting current industry standards, and the role of GPUs in parallel processing is underscored.
处理器基础部分（第 4 章）更新后纳入了多核系统中指令流水线和中断处理的当代实例。虽然经典的取指–译码–执行周期仍是核心，但大纲现在期望考生将这些概念与时钟速度、核心数和缓存大小等性能指标联系起来。此外，硬件部分（第 3 章）现在纳入了 NVMe 和 M.2 接口等固态存储技术，反映了当前的行业标准，并强调了 GPU 在并行处理中的作用。
8. Strengthening Database Concepts and SQL | 强化数据库概念与 SQL
Section 8 (Databases) now places a stronger emphasis on relational database design principles, including normalisation to third normal form (3NF). Candidates must be able to identify partial and transitive dependencies and transform unnormalised forms into 3NF. The structured query language (SQL) requirement has been expanded to include aggregate functions (COUNT, SUM, AVG, MAX, MIN), GROUP BY, and HAVING clauses, as well as nested subqueries. Practical skills in writing SQL to retrieve, insert, update, and delete data are assessed not only in Paper 1 but also through problem-solving contexts that bridge Paper 2.
第 8 章（数据库）现在更加强调关系数据库设计原则，包括达到第三范式（3NF）的规范化。考生必须能够识别部分依赖和传递依赖，并将未规范化的形式转化为 3NF。结构化查询语言（SQL）的要求扩展到了聚合函数（COUNT、SUM、AVG、MAX、MIN）、GROUP BY 和 HAVING 子句，以及嵌套子查询。编写 SQL 实现数据检索、插入、更新和删除的实践技能，不仅在卷一考查，还通过跨卷的问题解决情境加以评估。
9. Expanding Software Development Lifecycle Knowledge | 扩展软件开发生命周期知识
Section 12 (Software Development) has grown to include iterative and incremental development models alongside the traditional waterfall model. The syllabus now requires an understanding of agile practices, including sprints, daily stand-ups, and the role of user stories. Verification and validation are treated as distinct concepts, and testing strategies such as white-box and black-box testing are explained with concrete examples. Students are also introduced to the use of version control systems and the significance of documentation at each stage of development.
第 12 章（软件开发）扩展到包括迭代和增量开发模型，以及传统的瀑布模型。大纲现在要求理解敏捷实践，包括冲刺、每日站会和用户故事的作用。验证和确认被作为不同的概念处理，白盒测试和黑盒测试等策略用具体例子加以说明。学生还会接触到版本控制系统的使用，以及每个开发阶段文档的意义。
10. Exam Structure and Assessment Weight Adjustments | 考试结构与权重微调
The assessment structure retains the 60:40 ratio between Paper 1 and Paper 2, but the internal distribution of marks has been rebalanced. In Paper 1 (1 hour 30 minutes, 75 marks), the proportion of questions requiring extended writing has increased, reflecting the new emphasis on ethics, evaluation, and structured explanations. Paper 2 (2 hours, 75 marks) now devotes more marks to tasks that require writing code and designing algorithms from scratch, while the pre-release-based scenario question remains but with a revised rubric that rewards analytical thinking over recall. Command words like ‘evaluate’, ‘justify’, and ‘compare’ appear with greater frequency.
评估结构保持了卷一与卷二的 60:40 比率，但内部分数分布有所调整。在卷一（1 小时 30 分，75 分）中，需要扩展写作的题目比例增加，反映出对伦理、评价和结构化解释的新侧重。卷二（2 小时，75 分）现在将更多分值分配给要求从头编写代码和设计算法的任务，基于预发布材料的场景题保留但评分标准经修订，更看重分析思维而非记忆复现。’evaluate’、’justify’ 和 ‘compare’ 等指令词出现频率更高。
11. Key Trends and Preparation Strategies | 关键趋势与备考策略
Looking at the 2026 changes holistically, three distinct trends emerge: a shift toward contextual application, a tighter integration of theory with practical programming, and a heightened focus on contemporary computing issues. To excel, students should practice solving open-ended problems that mirror real-world scenarios, build fluency in both pseudocode and a chosen high-level language, and engage with news articles on AI ethics, cybersecurity incidents, and data legislation. Regular timed practice with past and specimen papers, while mentally mapping answers to the latest learning objectives, will develop the evaluative mindset rewarded in the new exams.
综合审视 2026 年的变化，三个显著趋势浮出水面：向情境应用的转变、理论与编程实践更紧密的整合，以及对当代计算议题的高度关注。要想脱颖而出，学生应练习解决反映真实场景的开放式问题，熟练掌握伪代码和一种高级语言，同时阅读关于 AI 伦理、网络安全事件和数据立法的新闻文章。在限时条件下定期练习历年真题和样卷，并自觉将答案对应到最新的学习目标上，将培养在新考试中获得认可的评价性思维。
12. Conclusion | 结语
The 2026 AS CIE Computer Science syllabus represents a thoughtful evolution rather than a radical overhaul. By embracing AI ethics, modern security paradigms, stricter problem-solving standards, and contemporary software development practices, Cambridge ensures the course remains a robust foundation for further study and careers in computing. Students who recognise these shifts early and tailor their learning and revision accordingly will be best positioned to turn the changes into an advantage.
2026 年 AS CIE 计算机科学大纲体现了一次深思熟虑的演变，而非彻底翻新。通过纳入 AI 伦理、现代安全范式、更严格的问题解决标准以及当代软件开发实践，剑桥确保该课程依然是为计算机领域深造和职业生涯奠定坚实基础的可靠途径。能够尽早认识这些变化并相应调整学习与复习的考生，最有可能将变化转化为优势。
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