Question
Download Solution PDFGiven below are two statements: one is labelled as Assertion A and the other is labelled as Reason R.
Assertion A: I/O protection is ensured by a hardware trap
Reason R: I/O interrupt caused by the condition like I/O completion and device malfunction occuring within the I/O devices
In the light of the above statements, choose the correct answer from the options given below.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is A is false but R is true
Key Points
- Assertion A:
- I/O protection is ensured by a hardware trap is not true because I/O protection is ensured by operating system routines.
- This is usually part of the kernel's responsibility, the core component of most operating systems. Kernel takes care of input/output (I/O) operations to ensure that they are performed safely, efficiently, and in accordance with the permissions of the active processes and users.
- This way, the operating system helps to prevent unauthorized access to I/O devices and maintains system integrity and security.
- Reason R:
- I/O interrupt caused by the condition like I/O completion and device malfunction occuring within the I/O devices is true because an I/O interrupt can be triggered by events such as I/O completion and device malfunctions.
Last updated on Jun 6, 2025
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