Discussion
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- Question
With interrupt-driven I/O, if two or more devices request service at the same time, ________.
Options- A. the device closest to the CPU gets priority
- B. the device that is fastest gets priority
- C. the device assigned the highest priority is serviced first
- D. the system is likely to crash
- Correct Answer
- the device assigned the highest priority is serviced first
- 1. The process of jointly establishing communication is called ________.
Options- A. DMA
- B. bidirectional addressing
- C. multiplexing
- D. handshaking Discuss
- 2. A port can be ________.
Options- A. strictly for input
- B. strictly for output
- C. bidirectional
- D. all of the above Discuss
- 3. The Pentium can address ________.
Options- A. 1 MB
- B. 1 GB
- C. 2 GB
- D. 4 GB Discuss
- 4. The Pentium microprocessor has a data bus of ________.
Options- A. 16 bits
- B. 32 bits
- C. 64 bits
- D. 128 bits Discuss
- 5. During a read operation the CPU fetches ________.
Options- A. a program instruction
- B. another address
- C. data itself
- D. all of the above Discuss
- 6. The first microprocessor had a(n)________.
Options- A. 1-bit data bus
- B. 2-bit data bus
- C. 4-bit data bus
- D. 8-bit data bus Discuss
- 7. Which of the following is not an enhancement to the Pentium that was unavailable in the 8086/8088?
Options- A. "Pipelined" architecture
- B. Expansion of cache memory
- C. Inclusion of an internal math coprocessor
- D. Data/address line multiplexing Discuss
- 8. Which of the following is not a computer functional block?
Options- A. Analog-to-digital converter
- B. Central-processing unit
- C. Memory
- D. Input/output ports Discuss
- 9. A 20-bit address bus can locate ________.
Options- A. 1,048,576 locations
- B. 2,097,152 locations
- C. 4,194,304 locations
- D. 8,388,608 locations Discuss
- 10. Polled I/O works best when ________.
Options- A. there are no priority considerations
- B. priority considerations are frequent
- C. the polling rate exceeds 1000 s
- D. the polling rate is below 1000 s Discuss
Computers problems
Search Results
Correct Answer: handshaking
Correct Answer: all of the above
Correct Answer: 4 GB
Correct Answer: 64 bits
Correct Answer: all of the above
Correct Answer: 4-bit data bus
Correct Answer: Data/address line multiplexing
Correct Answer: Analog-to-digital converter
Correct Answer: 1,048,576 locations
Correct Answer: there are no priority considerations
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