10+ Cyber Systems Interview Questions and Answers

Columns are identified by letters (A, B, C, etc.) and rows are identified by numbers (1, 2, 3, etc.) in Excel.

• Columns are labeled with letters at the top of the worksheet (A, B, C, etc.)

• Rows are labeled with numbers on the left side of the worksheet (1, 2, 3, etc.)

• To identify a specific cell, you combine the column letter and row number (e.g. A1, B2, C3, etc.)

Data entry refers to the process of inputting, organizing, and managing data into a computer system or database.

• Data entry involves entering data accurately and efficiently.

• It includes tasks such as typing, scanning, and transcribing information.

• Data entry operators may work with various types of data, such as customer information, financial records, or inventory data.

• They ensure data integrity by verifying and correcting any errors.

• Data entry plays a crucial role in maintain...read more

TCS (Tata Consultancy Services) is an Indian multinational IT services and consulting company.

• TCS is one of the largest IT services companies in the world.

• It is a subsidiary of the Tata Group, a conglomerate based in India.

• TCS offers services in areas such as consulting, software development, and business process outsourcing.

• The company has a global presence with offices in multiple countries.

• TCS is known for its innovation and expertise in the IT industry.

Excel formula is a mathematical expression used to perform calculations in Excel spreadsheets.

• Excel formulas start with an equal sign (=)

• Formulas can include functions, references to cells, and mathematical operators

• Examples: =SUM(A1:A10), =IF(B1>100, "Yes", "No")

A friend function is a function that is not a member of a class but has access to its private and protected members.

• Friend functions are declared inside a class with the keyword 'friend'.

• They can access private and protected members of the class.

• They are not member functions of the class but have the same access rights as member functions.

• Friend functions are often used to allow external functions or classes to access private data of a class.

A virtual function is a function in a base class that is declared using the keyword 'virtual' and can be overridden in a derived class.

• Virtual functions allow a derived class to provide a specific implementation of a function that is already defined in a base class.

• They enable polymorphism, where a function call is resolved at runtime based on the actual type of object being referred to.

• Virtual functions are used in object-oriented programming to achieve dynamic binding and r...read more

A constructor is a special method in a class that is automatically called when an object of that class is created.

• Constructors have the same name as the class they belong to

• They can be used to initialize object properties

• They can have parameters to customize the initialization process

Inheritance is a concept in object-oriented programming where a class can inherit attributes and methods from another class.

• Allows for code reusability and promotes the concept of hierarchy

• Derived class can access the properties and methods of the base class

• Types of inheritance include single, multiple, multilevel, hierarchical, and hybrid

• Example: Class 'Car' can inherit from class 'Vehicle' to access common attributes like 'color' and 'speed'

C++ was invented by Bjarne Stroustrup in 1979.

• Invented by Bjarne Stroustrup in 1979

• Derived from C programming language

• Introduced object-oriented programming features

• Used for system software, application software, drivers, client-server applications, and embedded firmware

James Gosling, Mike Sheridan, and Patrick Naughton invented Java at Sun Microsystems in the early 1990s.

• James Gosling, Mike Sheridan, and Patrick Naughton invented Java at Sun Microsystems.

• Java was originally developed to be used in set-top boxes and other consumer electronics.

• Java was officially released by Sun Microsystems in 1995.