Network Trainee Interview Questions and Answers

The three types of arrays are one-dimensional, two-dimensional, and multi-dimensional.

• One-dimensional arrays are a list of elements accessed by a single index.

• Two-dimensional arrays are a table of elements accessed by two indices.

• Multi-dimensional arrays have more than two dimensions and are accessed by multiple indices.

• Examples include a list of numbers, a matrix, and a cube of data.

Oops in Java refers to Object-Oriented Programming concepts and principles.

• Oops in Java stands for Object-Oriented Programming

• It is a programming paradigm that focuses on objects and classes

• Java supports encapsulation, inheritance, polymorphism, and abstraction

• Examples of Oops concepts in Java include classes, objects, inheritance, and interfaces

An array in Java is a data structure that stores a fixed-size sequence of elements of the same type.

• Arrays can store primitive data types (int, char, etc.) or objects.

• Array elements are accessed using an index starting from 0.

• Arrays have a fixed length that is defined at the time of creation.

• Arrays can be multidimensional, allowing for matrices or tables.

• Example: String[] names = {"John", "Jane", "Mike"};

Arrays are used to store multiple values in a single variable.

• Arrays are commonly used in programming languages to store and manipulate data.

• They can be used to store a list of numbers, strings, or objects.

• Arrays can be accessed using an index, which starts at 0.

• Arrays can be sorted, filtered, and searched to find specific values.

• Example: var fruits = ['apple', 'banana', 'orange'];

• Example: var numbers = [1, 2, 3, 4, 5];