Expressions provide an easy way to perform operations on data values to produce other data values, True.
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What is an Expression? </h3>
An expression is a combination of one or more operands (Constant, Variable, Array element, Function), operators(Multiplication,Division, Subtraction etc) to be interpreted by a programming language following rules of precedence or association to produce other data values.
Three kinds of expressions includes:
- A logical or relational expression
Therefore, it is true that Expressions provide an easy way to perform operations on data values to produce other data values.
Answer:
C. Pipes
Explanation:
Pipes are medium of communication between two or more interrelated processes. It is used for communication between operating system components. It is also used in exchanging messages between components of large programs. It implements interprocess communications through an interface. It passes information from one program process to another.
Answer:
A laser pointer
Explanation:
A laser printer would be the most suitable printer for printing a large number of high quality black and white printouts
Answer:
D) can access main memory at the same time as the main CPU
Explanation:
DMA is short for Direct Memory Access, these controllers allow the device to transfer data directly to and from the memory modules without interfering with CPU processes. Therefore it can access main memory at the same time as the main CPU. Thus freeing up CPU processing power for other tasks while also retrieving the data necessary.
Correctness is key. The other ones are optimizations at most. Although I would always include humor... ;-)
