MCQOPTIONS
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MCQOPTIONS
This section includes 13 Mcqs, each offering curated multiple-choice questions to sharpen your Data Science knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
merge function is used for merging data frames. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 2. |
Which of the following function is used for searching text strings by means of regular expression? |
| A. | grepd |
| B. | grepl |
| C. | gepexpr |
| D. | all of the mentioned |
| Answer» C. gepexpr | |
| 3. |
Regular expressions can be thought of as a combination of literals and metacharacters. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
Which of the following metacharacter is used to refer to any character? |
| A. | % |
| B. | @ |
| C. | . |
| D. | All of the mentioned |
| Answer» D. All of the mentioned | |
| 5. |
Which of the following function is good for the automatic splitting of names? |
| A. | split |
| B. | strsplit |
| C. | autsplit |
| D. | none of the mentioned |
| Answer» C. autsplit | |
| 6. |
MERGE_FUNCTION_IS_USED_FOR_MERGING_DATA_FRAMES.?$ |
| A. | True |
| B. | False |
| Answer» B. False | |
| 7. |
WHICH_OF_THE_FOLLOWING_FUNCTION_IS_USED_FOR_SEARCHING_TEXT_STRINGS_BY_MEANS_OF_REGULAR_EXPRESSION??$ |
| A. | grepd |
| B. | grepl |
| C. | gepexpr |
| D. | all of the Mentioned |
| Answer» C. gepexpr | |
| 8. |
Which of the following signs are used to indicate repetition? |
| A. | |
| B. | * |
| C. | – |
| Answer» C. ‚Äö√Ñ√∂‚àö√ë‚àö¬® | |
| 9. |
Regular expressions can be thought of as combination of literals and metacharacters. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 10. |
Which of the following is used for specifying character class with metacharacter? |
| A. | []. |
| B. | {} |
| C. | /+ |
| D. | All of the Mentioned |
| Answer» B. {} | |
| 11. |
Which of the following metacharacter is used to refer to any character? |
| A. | % |
| B. | @ |
| C. | . |
| D. | All of the Mentioned |
| Answer» D. All of the Mentioned | |
| 12. |
Which of the following function is used for fixing character vectors? |
| A. | tolower |
| B. | toUPPER |
| C. | toLOWER |
| D. | all of the Mentioned |
| Answer» B. toUPPER | |
| 13. |
Which of the following function is good for automatic splitting of names? |
| A. | split |
| B. | strsplit |
| C. | autsplit |
| D. | none of the Mentioned |
| Answer» C. autsplit | |