Grade 7 Basic Computer Knowledge Quiz!

Explanation
Windows, Payroll, and Inventory are all examples of application software because they are programs that perform specific tasks or functions. However, a "Report Card" is not typically considered application software. It is usually a document or a report generated by an application software, such as a school management system or a grading software. Therefore, "Report Card" is not an example of application software itself.

Explanation
The number 98.90 has a MSD (Most Significant Digit) of 9 because the digit 9 is the leftmost digit in the number.

Explanation
The number 1011 is equivalent to 11 because it is written in binary form. In binary, each digit can only be 0 or 1, and the value of each digit is determined by its position. Starting from the rightmost digit, the positions are 2^0, 2^1, 2^2, and so on. So, in this case, 1*2^0 + 1*2^1 + 0*2^2 + 1*2^3 equals 11.

Explanation
The LSD (Least Significant Digit) refers to the rightmost digit in a number. In the given number 56.890, the rightmost digit is 0. Therefore, the correct answer is 0.

Explanation
Octal numbers only contain digits from 0 to 7. Therefore, 89.42 is not a correct octal number as it contains the digit 8, which is not valid in octal representation.

Explanation
A tablet typically does not have a desktop operating system. Tablets usually run on mobile operating systems like iOS or Android, which are designed for touchscreens and optimized for mobile devices. Desktop operating systems like Windows or macOS are typically found on traditional computers or laptops, not on tablets.

Explanation
Internet Explorer is a web browser developed by Microsoft and is not primarily designed for audio/video calling. It is used for browsing the internet and accessing web pages, whereas the other options listed (FaceTime, Skype, and Google Duo) are specifically designed for audio/video communication purposes.

Explanation
Java is a programming language, not a mobile operating system. It is used to develop applications that can run on different operating systems, including mobile operating systems like Android and iOS. However, Java itself is not an operating system. Blackberry, iOS, and Android are all examples of mobile operating systems that are used in smartphones and tablets.

Explanation
YouTube is the correct answer because it is a popular app specifically designed for watching videos. It is a platform where users can upload, share, and view videos on various topics. YouTube offers a wide range of content including music videos, tutorials, vlogs, documentaries, and more. It has become the go-to app for video consumption, making it the obvious choice for watching videos.

Explanation
Native apps are written in the native language of the device, which means they are specifically developed for a particular operating system such as iOS or Android. These apps are built using programming languages like Swift or Objective-C for iOS and Java or Kotlin for Android. Native apps have the advantage of utilizing the full capabilities of the device and providing a seamless user experience. They can access device features like camera, GPS, and push notifications.

Explanation
Computer hardware is designed to understand and execute instructions written in machine language, which is a low-level programming language consisting of binary code. Machine language is the only language that the hardware directly understands and can execute. Other high-level programming languages like C++, Java, or Python need to be translated into machine language before they can be executed by the hardware. Therefore, the statement "The computer hardware only understands machine language" is true.

Explanation
The given statement is incorrect. A program written in a high-level language is not called object code. Object code refers to the compiled form of a program written in a low-level language, such as assembly language or machine code. High-level languages are used to write source code, which is then compiled or interpreted to generate object code or executable files. Therefore, the correct answer is false.

Explanation
Compiler and Interpreter are not the same. They are two different types of language translators. A compiler takes the entire program and converts it into machine code all at once, creating an executable file. On the other hand, an interpreter translates the program line by line, executing it directly without creating an executable file.

Explanation
In computer programming, a set of rules that define the structure and organization of a program is called syntax. These rules determine how statements and expressions should be written in order for the program to be considered valid and executable. Therefore, the statement "Set of rules are called syntax" is true.

Explanation
The given statement is false. C, C++, and C# are not examples of assembly language. They are high-level programming languages that are used to write software programs. Assembly language, on the other hand, is a low-level programming language that is specific to a particular computer architecture and is used to write programs that directly interact with the hardware.

Explanation
The statement is incorrect. Operating System is not an example of hardware. It is a software that manages computer hardware and provides services for computer programs. Hardware refers to the physical components of a computer system, such as the motherboard, processor, memory, and storage devices.

Explanation
The statement is true because app stores are platforms where users can download and install various applications for their devices. The availability of apps may vary depending on the operating system (OS) of the device. For example, iOS devices have the Apple App Store, while Android devices have the Google Play Store. Users can browse through these app stores and download apps that are compatible with their device's OS.

Explanation
Smartphones are capable of running multiple apps simultaneously. This is one of the main advantages of smartphones compared to traditional mobile phones. Users can switch between different apps, multitask, and run various applications simultaneously, enhancing their productivity and convenience. Therefore, the statement that smartphones can run only one or two apps is false.

Explanation
The statement is false because tablets and smartphones are not the same. While both are portable devices that can be used for various tasks, tablets typically have larger screens and are designed for more productivity-oriented tasks, such as reading, writing, and editing documents. Smartphones, on the other hand, are smaller and more focused on communication and convenience, with features like calling, texting, and mobile apps. Therefore, there is a clear difference between tablets and smartphones.

Explanation
The statement is false because program execution consists of loading, linking, and executing, not compiling. Compiling is the process of converting source code into machine code, which happens before program execution. Loading refers to the process of bringing the compiled program into memory, linking is the process of resolving external references and combining multiple object files, and executing is the actual running of the program.

Explanation
The HTTP protocol is indeed used in a client-server model. This means that it operates by establishing a connection between a client, typically a web browser, and a server, which hosts the requested web content. The client sends an HTTP request to the server, and the server responds with the requested data, such as a web page or a file. This client-server interaction is fundamental to the functioning of the HTTP protocol.

Explanation
The statement "All app development software are not free" implies that no app development software is free. However, this is not true as there are some app development software available for free. Therefore, the correct answer is False.