Answer:
the correct answer is "B"
Explanation:
the Systems development life cycle (SDLC) is a complete development process for a new product without giving any chance for alteration or improvement, Whereas,
extreme programming (XP) uses a software programme that is coded to allow for alteration. the product is continously modify until its meet customers satisfaction.
SDLC is seen as and archaic method of product development while XP is a new technology used by most company.
therefore, the SDLC models develops an entire system at once, where as XP uses incremental steps to improves an information system quality.
The given statement exists true. Ntering a system call concerns varying from kernel mode to user mode.
<h3>What is kernel mode?</h3>
A processor in a computer operating Windows contains two various modes: user mode and kernel mode. The processor switches between the two modes relying on what kind of code exists operating on the processor. Applications run in the user way, and core operating system features run in kernel mode.
The transition from the user mode to kernel mode happens, when the application demands the service of the operating system or an interrupts or a system call happens. The mode bit exists set to 1 in the user mode. When a program requires any hardware resources, it must create a call to the kernel.
Therefore, the correct answer is option a. true.
To learn more about kernel mode refer to:
brainly.com/question/15830364
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