computer organization and architecture

11. In memory mapped I/O how is I/O protection ensured?
Memory mapped I/O में protection कैसे होता है?
(UGC NET 2018)
A. By OS routines
B. By hardware trap
C. During configuration
D. Not possible

Correct Answer: A

Explanation (EN): Protection handled by OS using privileged mode.

Explanation (HI): Protection OS द्वारा handle होता है.

12. Match List I with List II (Handshaking Programmed IO Interrupt IO Processor)
List matching का सही उत्तर चुनिए
(UGC NET 2020)
A. A-I B-II C-III D-IV
B. A-II B-IV C-III D-I
C. A-II B-IV C-I D-III
D. A-IV B-III C-II D-I

Correct Answer: C

Explanation (EN): Correct matching based on definitions.

Explanation (HI): सही matching definitions के अनुसार है.

13. Match List I and List II (Isolated IO Memory mapped IO IO interface Async transfer)
List matching का सही उत्तर चुनिए
(UGC NET 2019)
A. A-2 B-3 C-4 D-1
B. A-1 B-2 C-3 D-4
C. A-2 B-1 C-4 D-3
D. A-1 B-2 C-4 D-3

Correct Answer: C

Explanation (EN): Correct mapping based on definitions.

Explanation (HI): सही mapping definitions के अनुसार है.

14. Choose true statement for memory mapped I/O system
Memory mapped I/O के लिए सही statement कौन-सा है?
(RPSC 2016)
A. Separate buses
B. Common bus separate control
C. Common bus common control
D. Distinct instructions

Correct Answer: C

Explanation (EN): Memory mapped uses common bus and control lines.

Explanation (HI): Memory mapped I/O में common bus और control lines होते हैं.

15. Which is not valid bus arbitration policy?
कौन-सा bus arbitration policy नहीं है?
(RPSC 2016)
A. Daisy chain
B. Independent request grant
C. Polling
D. DMA control

Correct Answer: D

Explanation (EN): DMA is transfer method not arbitration policy.

Explanation (HI): DMA transfer method है arbitration नहीं.

16. Major functions of I/O module include
I/O module के मुख्य कार्य क्या हैं?
(KVS 2013)
A. Control timing
B. Processor communication
C. Data buffering
D. All of these

Correct Answer: D

Explanation (EN): I/O module handles multiple functions.

Explanation (HI): I/O module कई कार्य करता है.

17. Interface that provides direct transfer between memory and peripheral is
Memory और peripheral के बीच direct transfer देने वाला interface कौन-सा है?
(KVS 2018)
A. DDA
B. Serial interface
C. BR
D. DMA

Correct Answer: D

Explanation (EN): DMA allows direct transfer without CPU.

Explanation (HI): DMA direct transfer करता है.

18. The I/O subsystem in OS is responsible for
I/O subsystem का कार्य क्या है?
(Bihar STET 2023)
A. Memory allocation
B. File management
C. Managing I/O operations
D. None

Correct Answer: C

Explanation (EN): It manages communication between processes and devices.

Explanation (HI): यह processes और devices के बीच communication manage करता है.

19. The diagram depicts a ___ cell
यह diagram किस cell को दर्शाता है?
(KVS 2013)
A. Storage
B. Mobile
C. Memory
D. Register

Correct Answer: C

Explanation (EN): Diagram represents memory cell.

Explanation (HI): यह memory cell दर्शाता है.

20. Which device is used to connect peripheral to a bus?
Peripheral को bus से connect करने वाला device कौन-सा है?
(CGPSC 2020)
A. Control register
B. Interface
C. Protocol
D. None

Correct Answer: B

Explanation (EN): Interface connects peripheral to bus.

Explanation (HI): Interface peripheral को bus से जोड़ता है.

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