Progressive Educational Consultancy Interview Questions and Answers

Business rules in ServiceNow automate processes and enforce data integrity through various types.

• Before Business Rule: Executes before the database action (e.g., insert/update). Example: Validate data before saving.

• After Business Rule: Executes after the database action. Example: Send notifications after a record is updated.

• Async Business Rule: Executes asynchronously after the database action. Example: Update related records without delaying the user.

• Display Business Rule: E...read more

A function is a block of code that performs a specific task. A function call is when the function is executed.

• Functions are reusable blocks of code that can be called multiple times in a program.

• Function calls involve providing the function name followed by parentheses, which may contain arguments.

• Functions can return values or perform actions without returning a value.

Common change types include standard, emergency, normal, and major.

• Standard change

• Emergency change

• Normal change

• Major change

C language has 5 basic data types: int, float, double, char, and void.

• int - used for integer values (e.g. 5, -10)

• float - used for floating-point values (e.g. 3.14, -0.5)

• double - used for double-precision floating-point values (e.g. 3.14159, -0.12345)

• char - used for single characters (e.g. 'a', 'B')

• void - used to indicate that a function does not return a value

An object in C++ is a self-contained entity that consists of data and functions to manipulate that data.

• Objects are instances of classes in C++

• Objects can have attributes (data members) and methods (member functions)

• Objects can be created dynamically using the 'new' keyword

• Example: class Car { int speed; void accelerate(); }; Car myCar;

Inheritance in C++ allows a class to inherit properties and behaviors from another class.

• Allows a class to inherit properties and behaviors from another class

• Derived class can access all public and protected members of the base class

• Supports single and multiple inheritance

• Example: class Car inherits from class Vehicle

An incident is an unplanned interruption to an IT service, while a problem is the underlying cause of one or more incidents.

• An incident is a single event that disrupts the normal operation of a service.

• A problem is the root cause of one or more incidents and needs to be resolved to prevent further incidents.

• Incidents are usually resolved quickly to restore service, while problems require investigation and long-term solutions.

• Examples: Incident - Server crash, Problem - Softwa...read more