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NEW QUESTION # 32
What is the hardware component that contains soldered parts and slots for other pieces of hardware that can be removed?
Answer: C
Explanation:
The motherboard is the main circuit board in a computer that contains soldered components and provides slots and connectors for removable hardware. In Information Technology hardware fundamentals, the motherboard holds essential components such as chipset circuitry, connectors, and sometimes integrated devices like audio or network controllers. It also provides sockets and slots for components that may be installed or replaced, such as the CPU socket, RAM slots, and expansion slots like PCIe for graphics cards or other add-on cards.
The motherboard includes pathways called buses that enable communication among the processor, memory, storage, and peripheral devices. A hard drive is a storage device and does not serve as the central board for system components. The system clock is a timing mechanism, not a physical board containing multiple slots.
An expansion bus refers to a communication pathway standard, not the full board that hosts multiple connectors and soldered parts. Therefore, the component described is the motherboard.
NEW QUESTION # 33
Which IT role is responsible for installing new hardware and troubleshooting existing hardware?
Answer: B
Explanation:
*Explanation: System administrators manage the upgrade and installation of new hardware and software, perform troubleshooting to address any problems with computer systems, and assess viruses and potential threats to a company's network1.
Therefore, the correct answer is D. System administrator.
NEW QUESTION # 34
Nadia Is collecting data for a project. The goal of the project is to determine which smartphone applications customers are most likely to use. Her main source of information will be online surveys that will be collected from customers over the next six months.
Which practices would help ensure that she will collect quality data?
Answer: D
Explanation:
Developing questions for the survey that are directly related to customers' application preferences is a practice that would help ensure collecting quality data.
Nadia should focus on relevant questions related to application preferences to gather accurate data.
References
1.WGU Introduction to IT (KSO1) Algorithm1.
NEW QUESTION # 35
Which data type should be used to calculate 90% of the retail price of an item?
Answer: B
Explanation:
To calculate a percentage of a price, you need a data type that can handle decimal values, as the result may not be a whole number. Here's why a floating-point data type is appropriate:
1.Precision: Floating-point data types are designed to handle numbers that have a fractional part, which is essential for representing percentages accurately.
2.Calculation: When calculating 90% of a retail price, you multiply the price by 0.9. This operation requires a data type that can represent both the price and the resulting product with decimal precision.
3.Storage: Floating-point types can store a wide range of values with precision, making them suitable for financial calculations where the exact amount matters.
The other options are not suitable for the following reasons:
*A. Boolean: Can only represent two values, true or false.
*C. Auto-number: Typically used for unique identifiers and cannot represent fractional values.
*D. String: While it can represent a number as text, it is not suitable for calculations without conversion, which is inefficient and error-prone.
References: The decision to use a floating-point data type for percentage calculations is supported by best practices in programming and database design, as discussed in various programming forums and documentation123. These sources recommend using decimal or floating-point types for financial calculations to ensure accuracy and avoid errors that can arise from binary floating-point representations2.
NEW QUESTION # 36
What is the role of the CPU in a computing environment?
Choose 2 answers
Answer: B,C
Explanation:
1.Arithmetic Logic Unit (ALU):
oThe ALU is a critical component within the CPU. It performs various arithmetic operations (such as addition, subtraction, multiplication, and division) and logic operations (such as comparisons, AND/OR operations, and shifting).
oWhen you perform a calculation on your computer, the ALU processes the numbers involved and produces the result.
oFor example, when you add two numbers in a spreadsheet, the ALU handles the addition operation.
2.Instruction Execution:
oThe CPU executes instructions based on machine code (binary signals represented as 1's and 0's).
oThese instructions come from software programs (applications), the operating system, or other components.
oThe CPU fetches an instruction from memory, decodes it, performs the necessary operation (using the ALU), and then stores the result.
oThis process happens at an incredibly fast rate, allowing your computer to perform complex tasks seamlessly.
3.System Bus:
oThe CPU communicates with other components (such as RAM, storage devices, and peripherals) through the system bus.
oThe system bus consists of three types:
Control Bus: Facilitates communication between the CPU and other devices.
Data Bus: Transfers data between different components.
Address Bus: Identifies memory locations for data access.
References
1.What Is a CPU, and What Does It Do? - How-To Geek
2.What Is The Purpose Of The Central Processing Unit (CPU) In A Computer? - Robots.net
3.Central Processing Unit (CPU) - GeeksforGeeks12
NEW QUESTION # 37
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