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NEW QUESTION # 119
Which operating system component schedules when each application runs?
Answer: B
Explanation:
The kernel schedules when each application runs. In operating systems, scheduling is the process of deciding which program or process gets access to the CPU and for how long. This is essential for multitasking, where many applications appear to run at the same time. The kernel contains the process scheduler, which manages ready queues, assigns CPU time slices, handles context switching, and enforces priority rules so that system tasks and user applications run smoothly. In Information Technology, this function is part of core resource management, alongside memory management and device coordination. The user interface controls how the system is presented to users, such as command-line or graphical interfaces. The file manager focuses on storing, retrieving, and organizing files and folders. Drivers translate operating system commands into device- specific actions for hardware such as keyboards, printers, and disk controllers. Since scheduling is a core OS responsibility handled internally, the correct component is the kernel.
NEW QUESTION # 120
A programmer needs to create a variable that holds a wire length rounded to the nearest tenth. What is the name of the data type that should be used?
Answer: C
Explanation:
A wire length rounded to the nearest tenth requires a numeric type that can store fractional values, such as 2.3 meters or 15.7 centimeters. In programming and database systems, floating-point data types are designed to represent real numbers that include decimal portions. This makes floating point the appropriate choice for measurements, scientific values, averages, and any quantity where partial units are meaningful. Using an integer would lose the fractional component because integers store only whole numbers, which would make the rounded-to-the-tenth requirement impossible to preserve. Character and character string types store text symbols rather than numeric quantities intended for arithmetic and comparisons. In Information Technology curricula, floating-point types are often introduced alongside integers to highlight the difference between counting values and measurement values. Although some databases prefer fixed-point decimal types for financial precision, for a physical measurement like wire length, floating point is commonly accepted and matches the options provided. Therefore, the correct data type for a wire length rounded to the nearest tenth is floating point.
NEW QUESTION # 121
What is one of the goals of the Association for the Advancement of Artificial Intelligence AAAI?
Answer: B
Explanation:
AAAI is a professional scientific society focused on artificial intelligence, and one of its central goals is advancing scientific understanding of the mechanisms and capabilities of intelligent machines. In Information Technology, AAAI is associated with research communities that study machine learning, reasoning, natural language processing, robotics, and problem-solving methods. The goal described in option C matches this mission by emphasizing scientific understanding of machine problem-solving capabilities. Option A aligns more with accreditation organizations, such as ABET, which evaluates academic programs. Option B describes goals associated with standards and computing infrastructure reliability and interoperability, which is more aligned with organizations that focus on standards and systems engineering. Option D aligns more with privacy-focused organizations and governance frameworks. AAAI supports conferences, publications, and collaboration aimed at improving AI theory and practice. Therefore, the correct answer is that AAAI advances a scientific understanding of the problem-solving capabilities of machines.
NEW QUESTION # 122
What can applications use to interact with a database?
Answer: D
NEW QUESTION # 123
Which two languages are scripted?
Choose 2 answers
Answer: B,D
Explanation:
Scripting languages are a specific type of programming language that is interpreted rather than requiring compilation. They are designed for specific runtime environments to provide additional functions, integrate complex systems, and communicate with other programming languages12.
Here are the two scripted languages from the given options:
1.PHP (Hypertext Preprocessor):
oPHP is a widely used server-side scripting language.
oIt is primarily used for web development to create dynamic web pages.
oPHP scripts are executed on the server before the HTML is sent to the client's browser.
oIt can interact with databases, handle forms, and perform various server-side tasks.
oPopular platforms like WordPress and Joomla are built using PHP.
2.Python:
oPython is a versatile and powerful scripting language.
oIt is known for its readability and concise syntax.
oPython can be used for web development, data analysis, scientific computing, automation, and more.
oIt is both a server-side and client-side scripting language.
oPython's extensive libraries make it suitable for a wide range of applications.
References:
*1Coursera: What Are Scripting Languages?
*2IONOS: Explanation, Features, and Examples of Scripting Languages
NEW QUESTION # 124
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