Tightly Coupled and Loosely Coupled Systems MCQ’s

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This set of Microprocessor Multiple Choice Questions & Answers (MCQs) focuses on “Tightly Coupled and Loosely Coupled Systems”.

1. The processor that executes the instructions fetched for it by the host processor is
a) microprocessor
b) coprocessor
c) independent processor
d) coprocessor and independent processor

2. The processor that asks for bus access or may itself fetch the instructions and execute them is
a) microprocessor
b) coprocessor
c) independent processor
d) coprocessor and independent processor

3. The processors used in the multi-microprocessor are
a) coprocessors
b) independent processors
c) coprocessors or independent processors
d) none of the mentioned

4. In tightly coupled systems, the microprocessors share
a) common clock
b) bus control logic
c) common clock and bus control logic
d) none of the mentioned

5. The bus arbitration is handled by an external circuit in
a) loosely coupled system
b) tightly coupled system
c) tightly and loosely coupled system
d) none of the mentioned

6. In a tightly coupled system, when a processor is using the bus then the local bus of other processors is in
a) hold state
b) high impedance state
c) halt state
d) low impedance state

7. Communication between processors using a common system bus and common memory takes place in
a) loosely coupled system
b) tightly coupled system
c) tightly and loosely coupled system
d) none of the mentioned

8. The loosely coupled system has an advantage of
a) more number of CPUs can be added
b) system structure is modular
c) more fault-tolerant and suitable for parallel applications
d) all of the mentioned

9. The disadvantage of the loosely coupled system is
a) complex due to additional hardware
b) less portable
c) more expensive
d) all of the mentioned

10. To indicate the completion of task allocated in a closely (tightly) coupled system, the microprocessor uses
a) status bit in memory
b) interrupts the host
c) status bit in memory or interrupts the host
d) clock pulse

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