Computer Science MCQ with detailed explanations for students & freshers preparing for entrance exams, various tests, interviews, competitive exams like GATE exam, interview, competitive examination and entrance exam.
[expand title=”View Answer”]Correct Answer is A. web page
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A program written in a high level languageis referred to as :Read More »
Here's why:
Drivers act as translators between the computer and the printer. They take the data the computer sends (like a document you want to print) and convert it into a format the printer understands, allowing it to translate the digital information into a physical printout.
ROM (Read-Only Memory) stores permanent data the computer needs to function but cannot be altered by the user. It wouldn't be involved in ongoing communication with a printer.
RAM (Random Access Memory) stores temporary data the computer is currently working on. While RAM might be used to hold the print job data temporarily, it's not the key component enabling smooth operation.
Here's why the other options are not used to start formulas:
A) /: This forward slash is often used as a division operator within formulas, but it cannot initiate them.
**B) **: Asterisk () is another operator, typically used for multiplication within formulas. It also cannot start a formula.
**C) ∗∗:Dollarsign() is used for various purposes in Excel, including absolute cell references. However, it's not used to initiate formulas.
Remember, the equal sign (=) signals to Excel that you're about to provide a calculation or instruction, making it the essential starting point for all formulas.
Here's why each option works (or doesn't):
A. =LARGE(A:A, 2): This formula uses the LARGE function, which returns the nth largest value in a range. However, it doesn't consider uniqueness. So, if there are duplicates of the highest value, it might not be the second truly unique highest value.
B. =LARGE(UNIQUE(A:A), 2): This formula is on the right track! It uses UNIQUE to remove duplicates and then LARGE to find the second largest value within the unique list. However, there's a simpler way.
C. =INDEX(SORT(UNIQUE(A:A), , -1), 2): This is the champion! It breaks down like this:
UNIQUE(A:A) removes duplicates from column A.
SORT(..., , -1) sorts the unique values in descending order (largest to smallest) because -1 indicates descending order.
INDEX(...) picks the value at a specific position (the second one in this case, indicated by 2).
D. =SMALL(UNIQUE(A:A), 2): This formula uses SMALL which finds the nth smallest value. We need the highest unique value, not the smallest, so this isn't the answer.
Therefore, formula C efficiently combines removing duplicates, sorting, and selecting the second largest value in a single expression.
The data path is the part of a processor that contains the hardware necessary to perform all the operations required by a computer. Here's why:
Data path: This is the core execution unit of the processor. It consists of the Arithmetic Logic Unit (ALU) that performs mathematical and logical operations, and other functional units like shifters and registers that help manipulate and move data. It's essentially the "workstation" where all the calculations and processing happen.
Controller: The controller acts as the brain of the CPU, fetching instructions from memory, decoding them, and directing the data path to perform the necessary operations. It tells the data path what to do, but it doesn't do the actual calculations itself.
Registers: Registers are temporary storage locations within the CPU that hold data and instructions currently being processed. They provide fast access to frequently used data for the data path to work on.
Cache: The cache is a small, high-speed memory that stores frequently accessed data and instructions closer to the processor. It helps improve performance by reducing the need to access slower main memory.
The Teamwork of Processor Components
Think of the processor as a team working together. The controller is the leader, giving instructions. The data path is the team of workers performing the calculations. Registers are like individual workbenches where the workers hold the data they're currently processing. And the cache is like a small toolbox close by, holding the most frequently used tools for quick access.
While each component plays a crucial role, the data path is the heart of the operation, containing the essential hardware for executing all the calculations and instructions that make the computer function.