PHP interview questions part 19
PHP interview questions part 19
Take as many assements as you can to improve your validate your skill rating
Total Questions: 20
1. How is a Data object represented internally in R language?
Correct Answer is : self
2. Which package in R supports the exploratory analysis of genomic data?
Correct Answer is : Making a method call using parent
3. __________ can contain heterogeneous inputs.
Correct Answer is : $this
4. ________ function can be used to add datasets in R provided with the columns in the datasets should be the same.
Correct Answer is : PHP Data Object
5. _________ variables are categorical variables which can hold either string or numeric values.
Correct Answer is : PHP 5
6. What is the memory limit in R for 64 bit system?
Correct Answer is : const
7. What is the memory limit in R for 32 bit system?
Correct Answer is : const NAME
8. What are the data types in R on which binary operators can be applied?
Correct Answer is : Parse Error
9. __________ function is used in applying a function each level of factors.
Correct Answer is : 4
10. How do you create log linear models in R language?
Correct Answer is : abstract class
11. What will be the class of the vector if you concatenate a number and NA?
Correct Answer is : abstract
12. ____________ is one type of the simplest machine learning classification algorithms that is a subset of supervised learning based on lazy learning.
Correct Answer is : abstract public function write();
13. What will be the class of the vector if you concatenate a number and a character?
Correct Answer is : One
14. R code can be tested using _________________ package.
Correct Answer is : implements
15. If the programmers want the output to be a data frame or a vector, then ________ function is used.
Correct Answer is : PHP 5.3
16. If a programmer wants the output to be a list then ___________ function is used.
Correct Answer is : getPrevious()
17. _____________ function is preferred over sapply as vapply allows the programmer to specific the output type.
Correct Answer is : throw
18. Which function is difficult to implement?
Correct Answer is : final
19. Which function is more verbose?
Correct Answer is : overloading
20. _____________ will produce a sequential vector c( (1,2,3,4,5,6,7,8,9)).
Correct Answer is : __set()
