Question

an application that instructs the cpu to begin working on task a, then has the cpu switch to task b and then task c while awaiting a response to a request for data from a database, and finally has the cpu switch back to task a once the data has been retrieved is using a technique called _____.
a. event - driven processing
b. multithreading
c. deadlocking
d. thread sleeping

Explanation:

To solve this, we analyze each option:

• Option a (event - driven processing): This is about responding to events (like user actions). But the scenario here is about switching between tasks to utilize CPU time while waiting for data, not event - response.
• Option b (multithreading): Multithreading allows a CPU to work on multiple tasks (threads) concurrently. In this case, the CPU switches between Task A, B, C (different tasks) while waiting for data for Task A, which is the essence of multithreading.
• Option c (deadlocking): Deadlocking is a situation where processes wait for each other and no progress is made. This is not what's happening here as tasks are being switched and progress is made.
• Option d (thread sleeping): Thread sleeping is when a thread is paused for a specific time. Here, the CPU is switching tasks, not pausing a single thread.

Answer:

b. multithreading