National Skills Development Authority, Programmer, 2024

National Skill Development Authority

Post: Programmer; Date: 10 March, 2024
Exam taker: NSDA; Total: 90; GK: 60; T:30

1(a) What is Series?

Polymorphism means “having many forms.” It allows the same method or function to perform different tasks based on the context. In simpler terms, it enables a single interface to represent different functionalities.

Polymorphism can be broadly categorized into two types:

Compile-time Polymorphism (Static Polymorphism)
Runtime Polymorphism (Dynamic Polymorphism)

1. Compile-time Polymorphism (Static Polymorphism)

Compile-time polymorphism is achieved through method overloading and operator overloading. The method to be executed is determined at compile time based on the method signature.

2. Runtime Polymorphism (Dynamic Polymorphism)

Runtime polymorphism is achieved through method overriding. The method to be executed is determined at runtime based on the object being referred to.

🎥 Video Solution:
Polymorphism & its types.

1(b) Write a program using C/C++ to find nᵗʰ Fibonacci.

Lorem ipsum dolor sit amet, consectetur adipisicing elit. Optio, neque qui velit. Magni dolorum quidem ipsam eligendi, totam, facilis laudantium cum accusamus ullam voluptatibus commodi numquam, error, est. Ea, consequatur.

2(a) What is call by reference?

2(b) Write a program that indicate the example of reference.

3(a) Write a SQL Query to find the duplicate phone number of employee table.

3(b) Write a SQL query to find the Second largest salary from Employee table.

4. English: “50 years of Bangladesh achievement and progress”.

5. Phrase and idioms: a) Black Ship b) Ins and Outs c) Fresh Blood.

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