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NEW QUESTION # 71
What are three operating systems that are commonly used today?
Choose 3 answers
Answer: B,C,E
Explanation:
1.Microsoft Windows: Developed and marketed by Microsoft, Windows is the most widely used desktop operating system globally. It accounts for nearly 72% market share for desktop and laptop computers.
Windows provides an intuitive and user-friendly graphical desktop, making it easy to use and navigate. It is versatile and supports various tasks such as word processing, browsing, gaming, software development, video editing, and more1.
2.Linux: Linux is a popular open-source operating system. It was developed by programmer Linus Torvalds in 1991. Linux runs in many organizations, private offices, mobile devices, supercomputers, and over the internet. It already contains almost all the features of the UNIX OS and has additional features. Various distributions of Linux exist, including Ubuntu, Debian, Solus, and Linux Mint. Linux is known for its security, compatibility, and flexibility2.
3.Android: Android is one of the most common operating systems today. It powers smartphones, tablets, and other smart devices. Developed by Google, Android is based on the Linux kernel. It dominates the mobile market and offers a wide range of applications and features for users2.
Comprehensive Detailed Step by Step Explanation:
1.Microsoft Windows:
oWindows is developed and maintained by Microsoft.
oIt provides a graphical user interface (GUI) and is user-friendly.
oWindows 10 is the current version, with earlier versions like Windows XP, Windows 8, and Windows 7.
oAdvantages: Compatibility with hardware, pre-loaded software, ease of use. Disadvantages: Cost, security threats, vulnerability to viruses.
2.Linux:
oDeveloped by Linus Torvalds in 1991.
oOpen-source and free of cost.
oUsed in various environments (organizations, supercomputers, etc.).
oDistributions like Ubuntu, Debian, and Linux Mint.
oAdvantages: Security, compatibility, flexibility. Disadvantages: Multiple versions, not ideal for gamers.
3.Android:
oDeveloped by Google.
oBased on the Linux kernel.
oDominates the mobile market.
oOffers a wide range of apps and features.
References:
1.Toppr: Commonly Used Operating System
2.Tecmint: Most Used Operating Systems in the World1
NEW QUESTION # 72
Which type of high-level language translates the entire program at once?
Answer: C
Explanation:
Compiled languages follow this process:
1.Source Code: You write code in a high-level language (like C++, Java, or C#).
2.Compiler: A compiler translates the entire source code into machine-executable code (object code) at once.
3.Executable File: The object code is often packaged into an executable file.
4.Execution: The executable file can be run directly by the computer's operating system.
NEW QUESTION # 73
What is one example of a professional organization in the IT industry?
Answer: D
Explanation:
Computer Professionals for Social Responsibility is an example of a professional organization in the IT industry. Professional organizations are generally membership-based groups that support practitioners through community, publications, conferences, ethical guidance, and advocacy related to professional practice. CPSR historically focused on the social and ethical impacts of computing, encouraging responsible technology use and informed public policy discussion. By contrast, the National Security Agency is a government intelligence and cybersecurity agency, the Institute for Telecommunication Sciences is a U.S. government research organization under the Department of Commerce, and the Federal Communications Commission is a government regulatory body overseeing communications. Those entities may influence IT and telecommunications, but they are not professional membership organizations in the standard sense used in IT fundamentals coursework. Professional organizations often provide networking opportunities, professional development resources, and codes of ethics or best-practice guidance for members. Therefore, among the options given, CPSR is the correct example of a professional organization in the IT industry.
NEW QUESTION # 74
Which item is an input device?
Answer: D
Explanation:
An input device is any hardware device that sends data to a computer, allowing you to interact with and control it. Input devices enable users to input information into the computer system. Let's break down the options:
*Flash Drive (A): A flash drive (also known as a USB drive or thumb drive) is a storage device, not an input device. It allows you to store and transfer data but does not directly input data into the computer.
*CD (B): A CD (compact disc) is also a storage medium, typically used for storing audio, video, or software files. Like a flash drive, it is not an input device.
*Scanner : A scanner is a classic example of an input device. It captures physical documents, images, or text and converts them into digital data that the computer can process. Scanners are commonly used for tasks like digitizing photos, creating PDFs, or scanning documents.
*Printer (D): A printer is an output device, not an input device. It produces hard copies (printed documents) based on digital data received from the computer.
In summary, the correct answer is C. Scanner, as it directly inputs data into the computer system.
References:
1.Computer Hope: What is an Input Device?
2.BBC Bitesize: What are input and output devices?
NEW QUESTION # 75
Which piece of network equipment extends the cable range and allows connections to be made by increasing the signal strength?
Answer: D
Explanation:
A repeater extends cable range by regenerating or amplifying a signal so it can travel farther without degrading. In Information Technology networking, signals weaken over distance due to attenuation and interference. A repeater receives the incoming signal, cleans or reconstructs it, and then retransmits it at full strength. This allows network segments to exceed the normal maximum cable length limits for a given standard and helps maintain reliable communication. Repeaters are commonly associated with the physical layer of networking because they deal with signal transmission rather than packet routing or traffic decisions.
A switch operates mainly at the data link layer and forwards frames based on MAC addresses within a local network, but it does not primarily exist to boost signal strength. A router connects different networks and forwards packets using IP addressing and routing tables. A firewall is a security device that filters traffic based on rules to protect networks. Since the question focuses on increasing signal strength to extend range, the correct equipment is a repeater.
NEW QUESTION # 76
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