Machine Learning MCQ Questions with answers and solutions Page 35

Q. What does the subexpression /java(script)?/ result in ?

(A) It matches “java” followed by the optional “script”
(B) It matches “java” followed by any number of “script”
(C) It matches “java” followed by a minimum of one “script”
(D) None of the mentioned

💬 Discuss

✅ Correct Answer: (A) It matches “java” followed by the optional “script”

Explanation: The subexpression /java(script)?/ matches “java” followed by the optional “script”.

Published by Mr. Dubey ⭐ 111.54K Points at 28-Apr-2024 06:50 pm in Machine Learning

Q. What is the most essential purpose of parantheses in regular expressions ?

(A) Define pattern matching techniques
(B) Define subpatterns within the complete pattern
(C) Define portion of strings in the regular expression
(D) All of the mentioned

💬 Discuss

✅ Correct Answer: (B) Define subpatterns within the complete pattern

Explanation: When a regular expression is successfullyy matched against a target string, it is possible to extract the portions of the target string that matched any particular paranthesized subpattern. The essential purpose of parantheses in regular expressions is to define subpatterns within the complete pattern.

Published by Mr. Dubey ⭐ 111.54K Points at 28-Apr-2024 06:50 pm in Machine Learning

Q. The method that performs the search-and-replace operation to strings for pattern matching is

(A) searchandreplace()
(B) add()
(C) edit()
(D) replace()

💬 Discuss

✅ Correct Answer: (B) add()

Explanation: The replace() method performs a search-and-replace operation. It takes a regular expression as its first argument and a replacement string as its second argument.

Published by Mr. Dubey ⭐ 111.54K Points at 28-Apr-2024 06:50 pm in Machine Learning

Q. What would be the result of the following statement in JavaScript using regular expression methods ?

(A) Returns [“123″”456″”789”]
(B) Returns [“123″,”456″,”789”]
(C) Returns [1,2,3,4,5,6,7,8,9]
(D) Throws an exception

💬 Discuss

✅ Correct Answer: (B) Returns [“123″,”456″,”789”]

Explanation: The split() method can take regular expressions as its arguments. The split() method generally breaks the string on which it is called into an array of substrings, using the argument as a separator.

Published by Mr. Dubey ⭐ 111.54K Points at 28-Apr-2024 06:50 pm in Machine Learning

Q. The Crockford’s subset doesnot include which function in JavaScript?

(A) eval()
(B) coeval()
(C) equal()
(D) equivalent()

💬 Discuss

✅ Correct Answer: (A) eval()

Explanation: The Crockford’s subset does not include the with and continue statements or the eval() function. It defines functions using function definition expressions only and does not include the function definition statement.

Published by Mr. Dubey ⭐ 111.54K Points at 28-Apr-2024 06:50 pm in Machine Learning

Q. Why does JavaScript subset disallow == and !=?

(A) It uses bitwise checking
(B) It uses === and !== instead
(C) It uses equals() and notequals() instead
(D) None of the mentioned

💬 Discuss

✅ Correct Answer: (B) It uses === and !== instead

Explanation: The subset does not include the comma operator, the bitwise operators, or the ++ and — operators. It also disallows == and != because of the type conversion they perform, requiring use of === and !== instead.

Published by Mr. Dubey ⭐ 111.54K Points at 28-Apr-2024 06:50 pm in Machine Learning

Q. The maximum number of global symbols a module can define is

(A) 2
(B) 3
(C) 1
(D) 4

💬 Discuss

✅ Correct Answer: (C) 1

Explanation: Generally, the various modules are allowed to run in the pristine (or near pristine) environment that it expects. The modules should minimize the number of global symbols they define – ideally, no module should define more than one.

Published by Mr. Dubey ⭐ 111.54K Points at 28-Apr-2024 06:50 pm in Machine Learning

Q. To define each of the set classes as a property of the sets object (namespace) for the module, the statement is

(A) sets = sets.AbstractEnumerableSet.extend();
(B) sets.SingletonSet = sets.AbstractEnumerableSet.extend(...);
(C) sets.SingletonSet = sets.extend(...);
(D) sets = sets.extend(...);

💬 Discuss

✅ Correct Answer: (B) sets.SingletonSet = sets.AbstractEnumerableSet.extend(...);

Explanation: The sets object is the namespace for the module, and we define each of the set classes as a property of this object.

Published by Mr. Dubey ⭐ 111.54K Points at 28-Apr-2024 06:50 pm in Machine Learning

Q. Consider the following statement
var Set = sets.Set;
var s = new Set(1,2,3);
What could be the efficiency quotient of the above two statements ?

(A) The programmer imports at once the frequently used values into the global namespace
(B) There is no efficiency quotient, the programmer tries to make it inefficient
(C) The programmer needs to import the Sets everytime he wants to use it
(D) All of the mentioned

💬 Discuss

✅ Correct Answer: (A) The programmer imports at once the frequently used values into the global namespace

Explanation: A programmer can import frequently used values into the global namespace. A programmer who was going to make frequent use of the Set class from the sets namespace might import the class like that.

Published by Mr. Dubey ⭐ 111.54K Points at 28-Apr-2024 06:50 pm in Machine Learning

Q. The scope of a function is also called as

(A) The function’s scope
(B) Module function
(C) Modulated function
(D) Private function

💬 Discuss

✅ Correct Answer: (B) Module function

Explanation: The scope of a function can be used as a private namespace for a module. Therefore, the scope of a function is called a module function.

Published by Mr. Dubey ⭐ 111.54K Points at 28-Apr-2024 06:50 pm in Machine Learning

Machine Learning MCQs with answers Page - 35

Q. What does the subexpression /java(script)?/ result in ?

Q. What is the most essential purpose of parantheses in regular expressions ?

Q. The method that performs the search-and-replace operation to strings for pattern matching is

Q. What would be the result of the following statement in JavaScript using regular expression methods ?

Q. The Crockford’s subset doesnot include which function in JavaScript?

Q. Why does JavaScript subset disallow == and !=?

Q. The maximum number of global symbols a module can define is

Q. To define each of the set classes as a property of the sets object (namespace) for the module, the statement is

Q. Consider the following statement
var Set = sets.Set;
var s = new Set(1,2,3);
What could be the efficiency quotient of the above two statements ?

Q. The scope of a function is also called as

Programming Categories

📱 Download Our App

Machine Learning MCQs with answers Page - 35

Q. What does the subexpression /java(script)?/ result in ?

Q. What is the most essential purpose of parantheses in regular expressions ?

Q. The method that performs the search-and-replace operation to strings for pattern matching is

Q. What would be the result of the following statement in JavaScript using regular expression methods ?

Q. The Crockford’s subset doesnot include which function in JavaScript?

Q. Why does JavaScript subset disallow == and !=?

Q. The maximum number of global symbols a module can define is

Q. To define each of the set classes as a property of the sets object (namespace) for the module, the statement is

Q. Consider the following statement var Set = sets.Set; var s = new Set(1,2,3); What could be the efficiency quotient of the above two statements ?

Q. The scope of a function is also called as

Programming Categories

📱 Download Our App

Q. Consider the following statement
var Set = sets.Set;
var s = new Set(1,2,3);
What could be the efficiency quotient of the above two statements ?