Pixel Display and Image Size Calculation Quiz

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Questions and Answers

What type of software is Photoshop classified as?

System software

Mobile Application (correct)

Web Application

Utility program

Which type of application software runs inside a web browser?

Desktop Application

Utility program

System software

Web Application (correct)

What is the main characteristic of Desktop Applications?

Only run on mobile devices

Manage computer resources

Run in a web browser

Require an installation process (correct)

Which program would likely be considered a Utility program?

Google Maps Signup and view all the answers

Among the listed examples, which falls under the category of System Software?

Operating Systems Signup and view all the answers

What distinguishes Mobile Applications from Desktop Applications?

Mobile Applications run on smartphones or tablets Signup and view all the answers

What is the total number of pixels displayed on the screen?

72,000 pixels Signup and view all the answers

Which aspect ratio best views the image presented on the screen?

4:3 Signup and view all the answers

If each pixel in the image is represented as 8 bits, what is the image size in KB?

90 KB Signup and view all the answers

What is the image size in MB if each pixel is represented as 8 bits?

0.36 MB Signup and view all the answers

What distinguishes system software from application software?

System software provides a platform for running application software. Signup and view all the answers

What are utility programs mainly responsible for?

Performing maintenance operations on a computer Signup and view all the answers

What is the primary function of an operating system?

All of the above Signup and view all the answers

Which of the following is NOT an example of a desktop operating system?

Android Signup and view all the answers

Which of the following is a responsibility of the operating system's process management function?

Coordinating the execution of multiple programs simultaneously (multitasking) Signup and view all the answers

What is the primary role of an operating system's memory management function?

To load programs into memory for execution in an efficient way Signup and view all the answers

Which of the following is NOT a responsibility of an operating system's security administration function?

Loading programs into memory for execution Signup and view all the answers

Which of the following is an example of a mobile operating system?

iOS Signup and view all the answers

What is the primary purpose of a user interface in an operating system?

To provide a means for users to input data and receive information Signup and view all the answers

Which of the following is NOT an example of a user interface type mentioned in the text?

Voice User Interface (VUI) Signup and view all the answers

What is the primary function of device drivers in an operating system?

To communicate with and control peripheral devices Signup and view all the answers

What term is used to describe the feature that allows a single physical computer to support multiple operating systems operating independently?

Virtualization Signup and view all the answers

What is the primary purpose of a utility program according to the text?

To optimize the performance of the computer system Signup and view all the answers

Which of the following statements about operating systems is NOT true according to the text?

The operating system is responsible for developing and installing software applications Signup and view all the answers

Which of the following is NOT an example of a utility program?

Word processor Signup and view all the answers

What is the primary purpose of disk defragmentation?

Improve data access speed Signup and view all the answers

Which of the following statements about operating systems is TRUE?

Smart devices typically have specialized operating systems Signup and view all the answers

What type of software is required to allow a computer to recognize and use a newly connected device like a printer or scanner?

Device driver Signup and view all the answers

Which of the following is NOT an example of system software?

Web browser Signup and view all the answers

What is the primary function of a file compression utility?

Reduce the size of files Signup and view all the answers

Study Notes

Software Classifications and Functions

Photoshop is classified as a graphics editing software.
Web applications run inside a web browser, providing functionality without requiring local installation.
Desktop applications are typically characterized by their installation on a single device and their capability to operate independently of web browsers.

Utility Programs and System Software

A utility program performs maintenance tasks for a computer, often improving its performance or managing system resources.
System software includes programs that manage hardware and provide a platform for running application software, such as operating systems.

Mobile vs. Desktop Applications

Mobile applications are designed for mobile devices and emphasize touch interfaces, while desktop applications are optimized for larger screens and often utilize keyboard and mouse inputs.

Pixels and Image Size

The total number of pixels displayed on a screen is calculated by multiplying its width by its height.
The best aspect ratio for viewing an image depends on the image's original width-to-height ratio to avoid distortion.
If each pixel in an image is represented by 8 bits, the image size in KB can be determined by dividing the total number of bits by 8 and then converting to kilobytes.
The image size in MB can be calculated similarly by dividing the total bits by ( 8 \times 1024 ).

Software Responsibilities

System software differs from application software in that it provides the foundation for running apps and managing hardware resources.
Utility programs are mainly responsible for tasks like file management, system optimization, and virus protection.

Operating System Functions

The primary function of an operating system is to manage hardware and software resources, serving as an intermediary between users and the hardware.
Process management includes scheduling tasks and ensuring that processes have the necessary resources while memory management involves allocating and freeing up memory as needed.
Security administration functions protect access while maintaining overall system security.

Interfaces and Device Drivers

A user interface in an operating system allows users to interact with the system, enabling navigation and management of resources.
Device drivers enable the operating system to recognize and use new hardware devices such as printers or scanners.
The feature that allows a single physical computer to host multiple operating systems is called virtualization.

Miscellaneous Software Information

The primary purpose of utility programs involves maintaining and optimizing a computer's performance.
Disk defragmentation reorganizes fragmented data for improved disk access speed.
File compression utilities reduce the size of files, making them easier to store and transmit.

Additional Insights

Not all programs categorized as system software, such as certain desktop applications or specific games, fulfill the primary role of managing hardware.
An example of a mobile operating system includes Android or iOS, distinctly different from desktop OSs like Windows or macOS.
Operating systems do not typically manage user-generated content directly; they facilitate the environment in which such applications operate.

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Description

Test your knowledge on pixel display and image size calculation. Answer questions related to total pixels on a screen, aspect ratio, and calculating image size in KB and MB using pixel representation in bits.