Year 7 CCEA Computing: Mock Unit Test Review | Year 7 CCEA 计算机：单元测试模拟卷解析

📚 Year 7 CCEA Computing: Mock Unit Test Review | Year 7 CCEA 计算机：单元测试模拟卷解析

This article walks you through a full mock unit test designed for Year 7 CCEA Computing. Each question is explained in detail so you can understand the correct answers and learn how to avoid common mistakes. Use this review to boost your confidence and revision for the real test.

本文带你完整解析一套为 Year 7 CCEA 计算机课程设计的单元模拟卷。每道题都配有详细的解答，帮助你理解正确答案并避开常见陷阱。用这份解析来巩固复习内容，增强考试信心。

1. Question 1: Input and Output Devices | 第1题：输入与输出设备

Question: Which one of the following devices is an input device? A) Monitor   B) Mouse   C) Printer   D) Speakers

题目：以下哪项设备是输入设备？ A) 显示器   B) 鼠标   C) 打印机   D) 音箱

Correct Answer: B) Mouse

正确答案：B) 鼠标

An input device sends data or commands into the computer system. When you move or click a mouse, you are giving instructions to the computer. That makes the mouse a classic input device.

输入设备将数据或指令发送到计算机系统中。当你移动或点击鼠标时，你就是在向计算机发出指令。因此鼠标是典型的输入设备。

Monitors, printers and speakers all take information from the computer and display or play it for the user. These are output devices because they produce output based on the computer´s processing.

显示器、打印机和音箱都是从计算机获取信息并呈现给用户。它们都是输出设备，因为它们根据计算机的处理结果产生输出。

Quick memory trick: if a device helps you put information in, it is an input device. If it shows or plays something out, it is an output device. Keyboards and microphones are also input devices; headphones and projectors are output devices.

快速记忆法：如果设备帮你把信息“送入”计算机，它就是输入设备；如果它把信息“送出”给用户，它就是输出设备。键盘和麦克风也是输入设备；耳机和投影仪是输出设备。

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2. Question 2: Software Categories | 第2题：软件分类

Question: What type of software is the Microsoft Windows operating system? A) Application software   B) System software   C) Utility software   D) A game

题目：Microsoft Windows 操作系统属于哪一类软件？ A) 应用软件   B) 系统软件   C) 实用软件   D) 一款游戏

Correct Answer: B) System software

正确答案：B) 系统软件

System software manages the computer´s hardware and provides a platform for running application software. An operating system like Windows controls memory, files and devices, so it is the most important piece of system software.

系统软件负责管理计算机的硬件，并为应用软件的运行提供平台。像 Windows 这样的操作系统控制内存、文件和设备，所以是最重要的系统软件。

Application software, such as Word processors and web browsers, helps users perform specific tasks. Utility software performs maintenance work, for example antivirus or disk cleanup. While games are application software, the question asks about the operating system.

应用软件（如文字处理器和浏览器）帮助用户完成特定任务。实用软件执行维护工作，例如杀毒或磁盘清理。游戏属于应用软件，但本题问的是操作系统。

A clear way to remember: system software runs the computer‑system software runs the computer; application software helps you do your work. Windows sits underneath everything and manages the system.

清晰的记忆方法：系统软件让计算机运转起来；应用软件帮你完成工作。Windows 在所有程序之下管理整个系统。

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3. Question 3: Creating Strong Passwords | 第3题：创建强密码

Question: Which of the following passwords is the strongest? A) 123456   B) password   C) Tr0ub4dor!   D) qwerty

题目：下面哪个密码最强？ A) 123456   B) password   C) Tr0ub4dor!   D) qwerty

Correct Answer: C) Tr0ub4dor!

正确答案：C) Tr0ub4dor!

A strong password uses a mix of uppercase and lowercase letters, numbers and symbols. Option C contains capital ´T´, lowercase letters, the numbers 0 and 4, and the symbol ‘!’. This makes it much harder to guess or crack.

强密码混合使用大小写字母、数字和符号。选项 C 包含大写字母 ‘T’、小写字母、数字 0 和 4，以及符号 ‘!’，这使得它更难被猜测或破解。

Passwords like ‘123456’, ‘password’ and ‘qwerty’ are extremely weak because they are short, predictable and appear in every dictionary attack list. A strong password should be at least eight characters long and avoid personal information.

像 ‘123456’、’password’ 和 ‘qwerty’ 这样的密码非常脆弱，因为它们很短、易于预测，而且出现在每一种字典攻击列表中。强密码应至少包含八个字符，并避免使用个人信息。

You can build a strong password by thinking of a phrase and mixing symbols. For example, ‘I love pizza!’ could become ‘1L0v3P!zz@’. Always keep your passwords secret and never share them with friends.

你可以想一个短语，然后混合符号来构建强密码。例如 ‘I love pizza!’ 可以变成 ‘1L0v3P!zz@’。务必保管好密码，永远不要告诉朋友。

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4. Question 4: File Extensions and Types | 第4题：文件扩展名与类型

Question: A file named ‘homework.docx’ is most likely a: A) Photograph   B) Word processing document   C) Spreadsheet   D) Music file

题目：名为 ‘homework.docx’ 的文件最有可能是：A) 照片   B) 文字处理文档   C) 电子表格   D) 音乐文件

Correct Answer: B) Word processing document

正确答案：B) 文字处理文档

The file extension ‘.docx’ is the default format for Microsoft Word documents. A word processing document is used for writing text‑based work like essays, reports and letters.

文件扩展名 ‘.docx’ 是 Microsoft Word 文档的默认格式。文字处理文档用于书写基于文本的作业，如论文、报告和信件。

Different extensions tell the computer which program to open the file with. Common extensions include ‘.jpg’ for images, ‘.mp3’ for audio, ‘.xlsx’ for spreadsheets and ‘.pptx’ for presentations.

不同的扩展名告诉计算机该用哪个程序打开文件。常见扩展名有：’.jpg’ 表示图像，’.mp3′ 表示音频，’.xlsx’ 表示电子表格，’.pptx’ 表示演示文稿。

Extension	Type of file
.docx	Word document
.jpg / .png	Image
.mp3 / .wav	Audio
.xlsx	Spreadsheet
.pdf	Portable Document

Always check the extension before you double‑click a file. Knowing these helps you organise your schoolwork and avoid confusion.

在双击打开文件之前，一定要检查扩展名。了解这些能帮助你整理学校作业，避免混淆。

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5. Question 5: Digital Citizenship – Netiquette | 第5题：数字公民 – 网络礼仪

Question: What is the best practice when communicating in an online class forum? A) Write in ALL CAPITAL LETTERS   B) Be respectful and polite   C) Share your home address   D) Ignore different opinions

题目：在在线课堂论坛中交流时，最好的做法是什么？ A) 全部使用大写字母   B) 保持尊重和礼貌   C) 分享你的家庭住址   D) 无视不同意见

Correct Answer: B) Be respectful and polite

正确答案：B) 保持尊重和礼貌

Netiquette means the correct way of behaving online. Treating others with respect, just as you would in a real classroom, creates a safe and positive learning environment.

网络礼仪指的是正确的在线行为方式。像在真实课堂里一样尊重他人，能营造安全、积极的学习环境。

Writing in all caps is seen as SHOUTING and can upset people. Sharing personal information like your address or phone number is dangerous and should be avoided. Ignoring other people´s opinions prevents good discussion.

全部使用大写字母被视为“大喊大叫”，可能让人感到不愉快。分享家庭住址或电话号码之类的个人信息很危险，必须避免。无视他人的意见不利于开展良好的讨论。

A good digital citizen also thinks before posting, uses kind words and reports bullying. Remember, once something is online it can be very difficult to remove.

好的数字公民在发帖之前会三思，使用友善的语言，并举报欺凌行为。记住，一旦内容发布到网上，就很难彻底删除。

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6. Question 6: Units of Data Storage | 第6题：数据存储单位

Question: How many bytes are there in one kilobyte? A) 100 bytes   B) 512 bytes   C) 1000 bytes (approximately)   D) 1024 bytes

题目：一个千字节有多少个字节？ A) 100 字节   B) 512 字节   C) 大约 1000 字节   D) 1024 字节

Correct Answer: D) 1024 bytes

正确答案：D) 1024 字节

In computing, storage units are based on powers of two. One kilobyte (KB) is equal to 2¹⁰ bytes, which is exactly 1024 bytes. This matters because computers use binary.

在计算机领域，存储单位基于 2 的幂。一个千字节 (KB) 等于 2¹⁰ 字节，正好是 1024 字节。这是因为计算机使用二进制。

While manufacturers sometimes round 1 KB to 1000 bytes for simplicity, the exact classic computing value is 1024. The same pattern continues: 1 MB = 1024 KB, 1 GB = 1024 MB, and 1 TB = 1024 GB.

虽然制造商有时为了方便将 1 KB 近似为 1000 字节，但计算机科学的经典准确值是 1024。同样的模式延续下去：1 MB = 1024 KB，1 GB = 1024 MB，1 TB = 1024 GB。

Think of it like this: a byte is about one character, so a kilobyte could store around a thousand characters. A simple text document might be 20 KB, while a high‑resolution photo could be several MB.

可以这样理解：一个字节大约存储一个字符，因此一个千字节可存储约一千个字符。一份简单的文本文档可能为 20 KB，而一张高分辨率照片可能达到数 MB。

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7. Question 7: Algorithms – The Sequence Structure | 第7题：算法 – 顺序结构

Question: In programming, what does ‘sequence’ mean? A) Repeating the same steps   B) Making a decision   C) Running instructions in order, one after another   D) Running several programs at once

题目：在编程中，“顺序”指的是什么？ A) 重复相同的步骤   B) 做出决策   C) 按顺序一步一步执行指令   D) 同时运行多个程序

Correct Answer: C) Running instructions in order, one after another

正确答案：C) 按顺序一步一步执行指令

Sequence is the most basic control structure. It means that the computer executes each line of code exactly in the order it is written, from the top to the bottom.

顺序是最基本的控制结构。它意味着计算机严格按照书写顺序，从上到下逐行执行代码。

Repeating steps is called iteration or loops, while making a decision refers to selection (for example, using IF statements). All three – sequence, selection and iteration – are building blocks of computational thinking.

重复步骤称为迭代或循环，做出决策指的是选择（例如使用 IF 语句）。顺序、选择和迭代是计算思维的三大基石。

In real life, following a recipe is a good example of sequence. You must complete the steps in order, otherwise the dish might fail. Programs also rely on the correct order of instructions.

在现实生活中，按照食谱做菜就是顺序的典型例子。你必须按顺序完成步骤，否则菜肴可能失败。程序也依赖正确的指令顺序。

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8. Question 8: Effective Web Searching | 第8题：高效网络搜索

Question: To find an exact phrase using a search engine you should: A) Write the phrase in capital letters   B) Put the phrase inside quotation marks   C) Add the word OR between each word   D) Click the first result immediately

题目：在使用搜索引擎查找确切词组时，你应该：A) 把词组全部大写   B) 将词组放在引号内   C) 在单词之间加上 OR   D) 立即点击第一条结果

Correct Answer: B) Put the phrase inside quotation marks

正确答案：B) 将词组放在引号内

Placing search terms in double quotation marks tells the search engine to look for that exact word order. For example, searching “Year 7 CCEA Computing” will return pages containing that precise phrase.

将搜索词放在双引号中会告诉搜索引擎查找完全一致的词序。例如搜索 “Year 7 CCEA Computing” 只会返回包含这个精确词组的页面。

Using capital letters usually does not affect search results in major engines. The OR operator is used to search for either one term or another, not for exact matching. And clicking the first result without checking can lead to sponsored or irrelevant websites.

在主流搜索引擎中使用大写字母通常不影响结果。OR 运算符用于搜索包含任意一个词的内容，而非精确匹配。不核实就点击第一条结果可能进入广告或不相关的网站。

Other useful techniques include using a minus sign to exclude words (e.g. ‘jaguar -car’) and using ‘site:’ to search within a specific website. These tricks make your research faster and more reliable.

其他有用的技巧包括用减号排除词语（如 ‘jaguar -car’），以及用 ‘site:’ 限定在特定网站内搜索。这些技巧能让你的研究更快速、更可靠。

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9. Question 9: The Importance of Backups | 第9题：备份的重要性

Question: Explain why it is essential to back up your school files regularly. (Open answer)

题目：解释为什么定期备份学校文件非常重要。（开放题）

Model Answer: Backups protect your work from being lost due to accidental deletion, hardware failure, virus attacks or theft. If you save a copy in another location, you can restore your files and continue working without having to start again.

参考答案：备份可以保护你的作业不因意外删除、硬件故障、病毒攻击或设备被盗而丢失。如果你在其他位置保存了一份副本，就可以恢复文件并继续工作，无需从头开始。

A good backup plan follows the 3‑2‑1 rule: keep three copies of important data, on two different types of storage, with one copy stored off‑site or in the cloud. For students, using a USB drive and cloud storage such as OneDrive is a smart start.

良好的备份计划遵循 3‑2‑1 原则：重要数据保留三份副本，存放在两种不同类型的存储介质上，其中一份存放在异地或云端。对学生来说，同时使用 U 盘和 OneDrive 等云存储是明智的做法。

Imagine spending hours on a project only to find it corrupted or deleted the night before it is due. Regular backups prevent that panic. Most schools and exam boards expect you to show that you can organise and protect digital work.

想象一下，你花了数小时完成的项目，却在截止日前一晚发现文件损坏或丢失。定期备份能避免这种恐慌。大多数学校和考试机构都期望你展示出组织和保护数字作品的能力。

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10. Question 10: Health and Safety – Computer Ergonomics | 第10题：健康与安全 – 计算机人体工程学

Question: Which of the following describes the best seating position when using a computer for a long period? A) Slouching forward with the screen very close   B) Feet flat on the floor, back straight against the chair   C) Sitting cross‑legged on the chair   D) Leaning far back with the screen tilted sideways

题目：长时间使用电脑时，以下哪种坐姿最好？ A) 身体前倾，屏幕很近   B) 双脚平放地面，背部挺直靠在椅背上   C) 盘腿坐在椅子上   D) 向后斜靠，屏幕歪向一侧

Correct Answer: B) Feet flat on the floor, back straight against the chair

正确答案：B) 双脚平放地面，背部挺直靠在椅背上

Good posture reduces strain on your neck, back and eyes. Your feet should be flat on the floor, knees at a right angle, and your back supported by the chair. The top of the screen should be at eye level.

良好的坐姿能减轻颈部、背部和眼睛的压力。双脚应平放在地面上，膝盖呈直角，背部由椅子支撑。屏幕顶端应与眼睛齐平。

Slouching or leaning forward can lead to long‑term health problems. Wrists should be straight while typing, and it is important to take regular breaks. Following the 20‑20‑20 rule (every 20 minutes, look at something 20 feet away for 20 seconds) helps protect your eyes.

弯腰驼背或身体前倾可能导致长期的健康问题。打字时手腕应保持平直，并且定时休息非常重要。遵循 20‑20‑20 规则（每 20 分钟，看向 20 英尺外的物体 20 秒）有助于保护视力。

Ergonomics is not just about comfort – it forms part of safe computing practices that CCEA expects you to understand. Even if you are working from home, a proper setup makes a big difference.

人体工程学不仅仅关乎舒适——它是 CCEA 期望你了解的安全计算实践的一部分。即使你在家学习，正确的布置也能带来很大不同。

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Published by TutorHao | Computing Revision Series | aleveler.com

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