Technology Interview Questions and Answers

Well, in both C & C++, the functions which are registered using the at exit() function can be called after main() returns. In C++, the static destructors can be called even after the main() function has been called.

Note: Did you know that the C language was not called that since its inception. This is the evolution of the C language:

ALGO -> BCPL -> B -> Tradition C -> K&R C -> ANSI C -> ANSI/ISO C -> C99. Well, here is the list of information technology interview questions and answers to help you get a grasp on the latest trends in this field.

Bit masking is the process of selecting which bits to keep and which bits to show. This is done using the AND, OR, and XOR operators, which mask the values which you want to clear and explain the benefits you want to show.

A static function is a function that has a scope limited to an object file. This means these functions are visible to other functions in the same file or same translation unit.

Example:

static int fun(void)
{
    printf("This is a static function ");
}

Note: A static member function can not be declared as a const, volatile, or const volatile. Download our complete list of information technology interview questions and answers to read it offline in the form of a PDF document.

The switch statement is a better option than multiple if statements when you are just giving the input directly without actually doing any condition checking in the statements.

A data structure is a specific format for the organization, processing, retrieving, and storage of data.

In the domain of Data Algorithms, a spanning tree T is basically a subgraph of an undirected graph G that is a tree that includes all of the vertices of G(the undirected graph), with the minimum possible number of edges.

Here are the advantages of having a Database Management System (DBMS):

• Eradicating Data Redundancy by having a global database for storing all segments of data.
• Sharing of Data among multiple users as and when required.
• Maintaining Data Integrity, Accuracy, and Consistency throughout the database.
• Data Security & Privacy for ensuring that the correct amount of data is visible only to any user as per authorization.
• Automatic Backup and Recovery of Data periodically so that the manual version of the same is not required, thus saving resources and time.

Normalization is the process used in Databases for structuring a relational database. This is in accordance with a series of standard or default forms with the sole purpose of reducing data redundancy while also improving data efficiency and integrity.

Note: Database Normalization was first proposed by Edgar F. Codd as a small section in his relational model of databases. It has now evolved as a very crucial aspect of driving efficiency in enterprise database models. Get a job in this field by reading answers to the most commonly asked information technology interview questions.

The Boyce-Codd Normal Form is a type of Data Normalization whose goal is to increase the data integrity by adequately organizing the columns and tables within a relational database.

Here is the technical difference between verification and validation:

Note: The name Google was created accidentally due to spelling. The founders were actually going for the name Googol! Here's our complete list of information technology interview questions to help you get a job in the technology sector.

A local variable is a kind of variable that is effective only within the function it is defined. When the function has finished its course of execution, the local variables no longer exist.

This is the modulus operator, and it gives the remainder after the division of two integers.