Free Isaca CCOA Actual Exam Questions - Question 13 Discussion

Question No. 13
Which of the following is the core component of an operating system that manages resources,
implements security policies, and provides the interface between hardware and software?
Select one option, then reveal solution.
US
DV
Daniel V.
2026-02-22

B tbh, libraries are just collections of pre-written code that apps use, so they don’t manage resources or enforce security. The question is about the core part handling hardware and policies, which rules out B, C, and D pretty quickly. The kernel is the only one that fits that description perfectly since it’s always running at a low level controlling everything behind the scenes.

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AA
Ash A.
2026-02-20

D imo, the shell’s more about user interaction, not managing hardware or security. Libraries and applications definitely don’t handle that core role either. The kernel is the only one that fits since it’s responsible for resource management and security at the lowest level.

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AA
Ash A.
2026-02-20

It’s A because only the kernel handles direct communication with hardware and enforces security at the system level. The shell and applications don’t have that low-level control.

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MF
Michael F.
2026-02-15

This one seems pretty straightforward: it’s A. The kernel is the only component that actually controls resources at the hardware level and enforces security rules. The shell just lets users interact with the system, and libraries or applications don’t handle core resource management. So the kernel fits all parts of the question perfectly.

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MF
Michael F.
2026-02-12

Option A makes the most sense because the kernel is the only part that runs in privileged mode, controlling hardware and enforcing security, unlike the shell or libraries which operate at higher levels.

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DR
David R.
2026-02-11

Guessing A here since the shell just provides command interface and libraries support programs, but only the kernel directly manages hardware and enforces security policies.

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DR
David R.
2026-02-03

D imo, the library and shell don’t handle resource management or security, so it’s really down to the kernel (A) since it’s the only part that deals directly with hardware and enforces policies.

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AE
Ash E.
2026-01-18

Option A makes sense since the kernel handles the core tasks directly with the hardware.

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AE
Ash E.
2026-01-16

This sounds like it's talking about the part that actually controls hardware and resource management. But isn't the shell also related to user commands? Wondering if A or D is better here.

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