Answer:
(a) yes, this protocol allows only serializable schedules for transactions as due to this the system maintains it's consistency. As in this protocol a unique transaction id is being assigned and with the help of that transaction id the system would be able to identify the process which has taken place in what particular order. For example, in case of bank transfers
balance = 1000 transaction id 100
write ADD 200 transaction id 101
write SUB 1100 transaction id 102
write ADD 900 transaction id 103
in here with the help of transaction id we can check which operation has happened in which order, if not then some operation will not happen like 102 immediately after 100 and skipping 101
(b) the modified version of this protocol would be to also consider the time of transaction and take this factor in the consideration
Programming Languages have evolved in phases called generations. The five generations of computers are : <span>First Generation (1940-1956) Vacuum Tubes. Second Generation (1956-1963) Transistors. Third Generation (1964-1971) Integrated Circuits. Fourth Generation (1971-Present) Microprocessors. <span>Fifth Generation (Present and Beyond) Artificial Intelligence.</span></span>
The procedure is known as<u> context switching</u>.
In the field of computers, context switching can be described as a procedure in which a process is stored so that it can be executed at a later point. Such a procedure allows multitasking operations easier. A simple CPU can be utilized for multiple processes.
After a task is done, it can be swapped out of the CPU and can be restored later. By using context switching, more space can be provided on a CPU as freeing from one process will make space for the other.
When switching a process, the status of the older running process is saved on the CPU as registers.
Context switch makes it feasible to share one CPU for multiple procedures hence reducing the concerns that arise from using additional processors.
To learn more about context switch, click here,
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True because printers, which require paper, are becoming more expensive. A paperless society has the advantage of being cheaper in this aspect.
