MCQOPTIONS
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MCQOPTIONS
This section includes 7 Mcqs, each offering curated multiple-choice questions to sharpen your Javascript knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which among the following POSIX signals generate events? |
| A. | SIGDOWN |
| B. | SIGFLOAT |
| C. | SIGINT |
| D. | SIGSHORT |
| Answer» D. SIGSHORT | |
| 2. |
When do uncaught exceptions generate events? |
| A. | When handlers are registered |
| B. | When handlers are deregistered |
| C. | When handler functions are called |
| D. | When handlers do not have a matching catch clause |
| Answer» B. When handlers are deregistered | |
| 3. |
Which of the following is an event emitter? |
| A. | once |
| B. | process |
| C. | listeners |
| D. | on |
| Answer» C. listeners | |
| 4. |
Which function is a synonym for on()? |
| A. | addListener() |
| B. | listeners() |
| C. | once() |
| D. | add() |
| Answer» B. listeners() | |
| 5. |
What is the function used to remove all handlers for name events? |
| A. | deleteAllListeners(name) |
| B. | deleteListener(name,f) |
| C. | removeListener(name,f) |
| D. | removeAllListeners(name) |
| Answer» E. | |
| 6. |
What is the function used to deregister event handler ‘f’?$ |
| A. | deleteAllListeners(name) |
| B. | deleteListener(name,f) |
| C. | removeListener(name,f) |
| D. | removeAllListeners(name) |
| Answer» D. removeAllListeners(name) | |
| 7. |
What are the events generated by the Node objects called? |
| A. | generators |
| B. | emitters |
| C. | dispatchers |
| D. | highevents |
| Answer» C. dispatchers | |