CADD Centre Training Services Trainee Interview Questions and Answers

Q1. Codes of countries cities
Ans. 
The codes of countries and cities are unique identifiers used for various purposes.
• Country codes are typically two-letter codes assigned by the International Organization for Standardization (ISO). For example, the country code for the United States is 'US'.

• City codes can vary depending on the system used. Some cities may have official codes assigned by government authorities, while others may use codes based on airpor...read more
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The first round was aptitude and it has 3 sections

They gave coding regarding java

Q1. Tell about Oops concepts
Ans. 
OOPs concepts are fundamental principles in object-oriented programming, including inheritance, encapsulation, polymorphism, and abstraction.
• Inheritance: Allows a class to inherit properties and behavior from another class. Example: class Dog extends Animal.

• Encapsulation: Bundling data and methods that operate on the data into a single unit. Example: private variables and public methods.

• Polymorphism: Ability to present...read more
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Q2. Difference between method overloading and method overriding
Ans. 
Method overloading is having multiple methods in the same class with the same name but different parameters. Method overriding is having a method in a subclass with the same name and parameters as a method in its superclass.
• Method overloading is resolved at compile time based on the method signature, while method overriding is resolved at runtime based on the object type.

• Method overloading is used to provide different ...read more
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Python code, de-encryption of data

Q1. What is Java ? What is Inheritance?
Ans. 
Java is a popular programming language known for its platform independence.
• Java is an object-oriented language.

• It was developed by Sun Microsystems.

• Java programs are compiled into bytecode and run on a Java Virtual Machine (JVM).

• Java supports inheritance, which allows classes to inherit properties and behaviors from other classes.

• Inheritance promotes code reusability and helps in creating a hierarchical class structure
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Q2. What is Joins? Difference between right join and Left Join?
Ans. 
Joins are used in databases to combine rows from two or more tables based on a related column between them.
• Joins are used to retrieve data from multiple tables in a single query.

• Right join returns all the rows from the right table and the matching rows from the left table.

• Left join returns all the rows from the left table and the matching rows from the right table.

• In right join, if there is no match, NULL values are re...read more
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Q1. Brief introduction on yourself and what you want to be
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Q2. What is your long term goal
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Q1. Skills and area of interest
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Basic coding knowledge

Q1. About yourself?
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Q1. Codes of countries cities
Ans. 
The codes of countries and cities are unique identifiers used for various purposes.
• Country codes are typically two-letter codes assigned by the International Organization for Standardization (ISO). For example, the country code for the United States is 'US'.

• City codes can vary depending on the system used. Some cities may have official codes assigned by government authorities, while others may use codes based on airpor...read more
Answered by AI
Add your answer