Explore topic-wise MCQs in R Programming.

This section includes 10 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.

To get the current date, the _______ function will return a Date object which can be converted to a different class if necessary.

A. Sys.Time
B. Sys.Date
C. Sys.DateTime
D. DateTime
Answer» C. Sys.DateTime
Discussion
2.

Warnings are generated by the _________ function.

A. warning()
B. error()
C. run()
D. message()
Answer» B. error()
Discussion
3.

What would be the value of following R expression?

A. Warning in log(-1): NaNs produced
B. 1
C. Null
D. 0View Answer
Answer» B. 1
Discussion
4.

_________ is an indication that a fatal problem has occurred and execution of the function stops.

A. message
B. error
C. warning
D. message & warning
Answer» C. warning
Discussion
5.

TO_GET_THE_CURRENT_DATE,_THE_________FUNCTION_WILL_RETURN_A_DATE_OBJECT_WHICH_CAN_BE_CONVERTED_TO_A_DIFFERENT_CLASS_IF_NECESSARY.?$

A. Sys.Time
B. Sys.Date
C. Sys.DateTime
D. All of the mentioned
Answer» B. Sys.Date
Discussion
6.

Which_of_the_following_code_represents_internal_representation_of_a_Date_object_?$

A. class(as.Date(“1970-01-02”))
B. unclass(as.Date(“1970-01-02”))
C. unclassint(as.Date(“1970-01-02”))
D. all of the mentioned
Answer» B. unclass(as.Date(‚Äö√Ñ√∂‚àö√ë‚àö‚à´1970-01-02‚Äö√Ñ√∂‚àö√ë‚àöœÄ))
Discussion
7.

Erro?

A. Warning
B. Messages
C. All of the mentioned
Answer» C. All of the mentioned
Discussion
8.

Warnings are generated by the _________ function

A. warning()
B. error()
C. run()
D. none of the mentioned
Answer» B. error()
Discussion
9.

Warning in log(-1): NaNs produced

A. 1
B. Null
C. 0
Answer» B. Null
Discussion
10.

_________ is an indication that a fatal problem has occurred and execution of the function stops

A. message
B. error
C. warning
D. all of the mentioned
Answer» C. warning
Discussion