Q39.Marks: +2.0UGC NET Paper 2: Computer Science 7th Dec 2023 Shift 2
A system bus in which each data item is transferred during a time slice known in advance to both units source and destination is called:
1.MIMD
2.DMA
3.asynchronous bus
4.synchronous bus✓ Correct
Solution
The correct answer is synchronous bus
Key Points
Synchronous Bus:
This is a computer bus in which data is transferred on regular intervals that are set by a clock signal. Since the source and destination known about these intervals in advance, efficient data transmission can be achieved.
This approach is used to maintain consistency and reliability of data transactions, although it does require close coordination between various system components.
Additional Information
MIMD (Multiple Instruction, Multiple Data):
In MIMD, multiple processors can execute different instructions on different data concurrently. It's a characteristic of a more advanced architecture for parallel computing or multiprocessing machines.
DMA (Direct Memory Access):
This refers to a feature of computer systems that allows certain hardware subsystems to access main system memory independently of the central processing unit (CPU). It's used to speed up data transfer and improve system performance, as it allows devices to process data without the CPU, reducing its workload.
Asynchronous Bus:
This refers to a bus in a computer system that operates at its own pace regardless of the main system clock. Data is transferred through poses, where each data piece waits for the previous piece to be fully transferred before it begins its transmission. This approach can lead to variations in transfer speed depending on a variety of factors, including system load.
