Interview Questions Answers in Python, Core Java, Oracle General, C++, Digital Marketing, Data Science, C Sharp, HTML DHTML, Search Engine Optimization SEO

What is PL/SQL ?

Answer

PL/SQL refers to Procedural Language/Structured Query Language. It is a programming language extension of SQL that allows you to write procedural code, such as loops, conditional statements, exception handling, and SQL statements. PL/SQL is mainly used for developing database applications and stored procedures within Oracle Database.

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Question { IBS, 1937 }

What Is Polymorphism in C++ ?

Answer

An object-oriented programming concept called polymorphism enables a function or object to act differently depending on the situation. Polymorphism in C++ can be called at compile time or at runtime.

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Question { Amazon, 1639 }

What is the difference between delete and delete[]

Answer

• delete: Frees memory allocated for a single object.
• delete[]: Frees memory allocated for an array of objects.

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Question { 863 }

What is keyword density?

Answer

Keyword density is the ratio of a term's occurrences on a page to the total number of words on that page. One possible method to calculate it is to divide the total number of words on the page by the number of times the term appears, and then divide the result by 100.

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Question { 1416 }

What are decorators in Python?

Answer

Decorators are used to alter the appearance of a function while retaining its structure. They are often defined before the function that they improve.

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Question { 1029 }

What are generators in Python?

Answer

Generators in Python are a special type of function that return an iterator and allow you to iterate through a sequence of values lazily, meaning they produce values one at a time and only when requested. Instead of using return, generators use the yield keyword to return values. This makes generators memory-efficient, especially for large datasets, as they generate values on the fly rather than storing the entire sequence in memory.

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Question { Cognizant, 1795 }

what is a structure in c#

Answer

A structure is a user-defined data type that groups variables of different types under one name.

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Question { Amazon, 1374 }

What is a class in C++?

Answer

The core components of C++ object-oriented programming are classes. They represent a collection of connected objects and are a user-defined data type. Classes keep variables and member functions together.

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Question { IBS, 1578 }

What is the difference between an ARRAY and a LIST in C++?

Answer

Although lists and arrays are both used to store data, they differ in a few important ways. These consist of:

• A list's size is changeable, but an array's is fixed.
• While a list allows sequential access, in which the user must navigate through the elements to locate a given index, an array allows random access using indexes.

• While a list can store entries in any memory location, an array stores elements in contiguous memory.

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Question { 1024 }

What is the difference between HTML elements and tags?

Answer

The fundamental components of a web page's content and structure are represented by HTML elements. They cover every aspect of the structure, including the characteristics, content, and start and end tags. Conversely, tags are particular markers that enclose material in angle brackets (<>). Although elements are made up of both content and tags, tags are the opening () and closing () markers that indicate the beginning and ending of an element in HTML syntax.

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Question { 1469 }

What is namespace in Python?

Answer

A namespace is a naming system used to make sure that names are unique to avoid naming conflicts.

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Question { Adobe, 1609 }

What is C++11?

Answer

C++11 is a major update to the C++ language, introducing features like lambda expressions, smart pointers, nullptr, std::thread, and more.

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Question { B-Ways TecnoSoft, 1233 }

What is Inheritance in C#?

Answer

An object-oriented programming technique called inheritance allows one class to inherit the traits and attributes of another class. This makes it simple for users to extend and reuse preexisting characteristics or actions.

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Question { 1406 }

What are Namespaces?

Answer

Namespaces are used to organize code and prevent name collisions.

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Question { 1127 }

What is Google Analytics?

Answer

One of Google's web analytics services, Google Analytics monitors and reports website traffic. It offers information about site performance and user behavior.

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