MCQOPTIONS
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MCQOPTIONS
This section includes 11 Mcqs, each offering curated multiple-choice questions to sharpen your R Programming knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
You can time ________ expressions by wrapping them in curly braces within the call to system.time(). |
| A. | smaller |
| B. | longer |
| C. | error |
| D. | grater |
| Answer» C. error | |
| 2. |
Parallel processing is done via __________ package can make the elapsed time smaller than the user time. |
| A. | parallel |
| B. | statistics |
| C. | distributed |
| D. | symmetry |
| Answer» B. statistics | |
| 3. |
The elapsed time may be ________ than the user time if your machine has multiple cores/processors. |
| A. | smaller |
| B. | greater |
| C. | equal to |
| D. | null |
| Answer» B. greater | |
| 4. |
PARALLEL_PROCESSING_IS_DONE_VIA____________PACKAGE_CAN_MAKE_THE_ELAPSED_TIME_SMALLER_THAN_THE_USER_TIME.?$ |
| A. | parallel |
| B. | statistics |
| C. | distributed |
| D. | none of the mentioned |
| Answer» B. statistics | |
| 5. |
You_can_time__________expressions_by_wrapping_them_in_curly_braces_within_the_call_to_system.time().$ |
| A. | smaller |
| B. | longer |
| C. | error |
| D. | all of the mentioned |
| Answer» C. error | |
| 6. |
The elapsed time may be ________ than the user time if your machine has multiple cores/processor? |
| A. | smaller |
| B. | greater |
| C. | equal to |
| D. | all of the mentioned |
| Answer» B. greater | |
| 7. |
_________ time is time charged to the CPU(s) for the R expression. |
| A. | elapsed |
| B. | user |
| C. | response |
| D. | all of the mentioned |
| Answer» B. user | |
| 8. |
system.time function returns an object of class _______ which contains two useful bits of information. |
| A. | debug_time |
| B. | proc_time |
| C. | procedure_time |
| D. | all of the mentioned |
| Answer» C. procedure_time | |
| 9. |
The _______ function computes the time (in seconds) needed to execute an expression. |
| A. | system.timedeb() |
| B. | system.time() |
| C. | system.datetime() |
| D. | all of the mentioned |
| Answer» C. system.datetime() | |
| 10. |
R comes with a ________ to help you optimize your code and improve its performance. |
| A. | debugger |
| B. | monitor |
| C. | browser |
| D. | profiler |
| Answer» B. monitor | |
| 11. |
________ is a systematic way to examine how much time is spent in different parts of a program. |
| A. | Profiling |
| B. | Monitoring |
| C. | Logging |
| D. | All of the mentioned |
| Answer» B. Monitoring | |