In this document, we have a collection of questions and answers related to the 2021-2022 Computer Level Two Certification Exam. The content covers a wide range of topics in computer science and software applications, including web development, database management, operating systems, programming languages, and user interfaces.
1. ASP.NET is an essential web application framework developed by Microsoft. It provides six built-in objects: Response, Request, Server, Application, Session, and Cookie. These objects facilitate communication between the server and client, handle HTTP requests and responses, manage server-side functionality, and maintain user session data.
2. Windows 98 is an older version of the Microsoft Windows operating system, designed for personal computers.
3. Input devices are hardware components that allow users to input data into a computer, converting various types of data into a form the computer can process.
4. In Microsoft Access, to ensure that deleting a record from the primary table also deletes related records from a child table, you need to define Referential Integrity. This feature maintains the relationship between tables and prevents orphaned records.
5. In Microsoft Word, clicking the vertical scroll bar's down arrow scrolls the screen down one full page.
6. In the given code snippet, the correct operation is `a % (int)(x - y)`, which performs integer division and modulus operations on variables.
7. InputStreamReader is a Java class used to convert a byte stream (InputStream) into a character stream (Reader), facilitating the reading of text data in different character encodings.
8. In Java, the `package` statement should be the first line in a source file, organizing classes and interfaces into a hierarchical structure.
9. The Image control in web development is used to display images and can also be hyperlinked to other web pages or resources.
10. A central processing unit (CPU) executes a single instruction at a time, forming the basis for a computer to perform basic operations or judgments.
11. An Input stream is a read-only stream, allowing data to be read but not written to.
12. To make the Print method effective in the Form_Load event, the AutoRedraw property of the form must be set, ensuring that any graphical changes are immediately drawn on the form.
13. In C language, automatic variables (e.g., local variables) do not automatically receive initial values; they are uninitialized unless explicitly assigned.
14. In Microsoft Word, the "Delete Row" command in the "Table" menu can be used to remove an entire row from a selected table.
15. A computer's internal memory (RAM) has a smaller storage capacity compared to a hard disk drive, but it provides faster access to data.
16. TCP/IP (Transmission Control Protocol/Internet Protocol) is the foundation for communication between diverse networks and computers on the Internet.
17. In Java database connectivity (JDBC), the Connection interface is used to establish a connection with a database.
18. Software testing aims to identify as many errors as possible in a program, not to prove its correctness.
19. Microsoft Word's drawing tools enable users to create shapes like rectangles, lines, and ellipses.
20. In HTML, the `<title>` tag pair is used to define the page title, which appears in the browser's title bar.
21. LINQ (Language Integrated Query) in .NET Framework allows querying, insertion, and modification of data, but not importing.
22. To set the tab order of controls on a Windows Form, you would use the "Tab Order" property in the "Data" tab of the Properties window.
23. A statement that assembly programs are written in multiple languages is incorrect. Assembly language is specific to a particular processor architecture and is not a mix of languages.
24. In Microsoft Word, pressing Ctrl+V or using the "Paste" button from the toolbar both serve the same purpose: to insert copied content.
25. Only active, visible applications have their icons displayed on the taskbar.
26. In Java, the BufferedReader class, which extends the Reader class, can track the current line number while reading files. You can use the `readLine()` method to read a line and `getLineNumber()` to retrieve the current line number.
These questions and answers cover a broad spectrum of computer knowledge, preparing candidates for the Computer Level Two Certification Exam. The topics include web development frameworks, database management concepts, operating system basics, programming principles, and common software application usage.
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