Contours Consulting Engineer Software Engineer Interview Questions and Answers

Q1. Explain the ada levels
Ans. 
ADA levels refer to the different levels of accessibility compliance outlined in the Americans with Disabilities Act.
• ADA Level A: Basic accessibility features, such as providing alternative text for images.

• ADA Level AA: Includes Level A requirements and additional criteria, like providing captions for videos.

• ADA Level AAA: The highest level of accessibility, including features like sign language interpretation for vide
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Q1. SQL interview question
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Q2. Stored Procedure and function differences
Ans. 
Stored procedures are precompiled and stored in the database, while functions are compiled and stored in memory.
• Stored procedures are precompiled and stored in the database for reuse.

• Functions are compiled and stored in memory for faster execution.

• Stored procedures can return multiple values, while functions return a single value.

• Functions can be called from within a stored procedure, but stored procedures cannot be ca
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Q3. SQL query flow and window function they will ask
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First time attend aptitude test .

Q1. Any computer engineering basic questions
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Q2. C,C++,java , python
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Q3. What is inheritance.how many times of inheritance.
Ans. 
Inheritance is a concept in object-oriented programming where a class can inherit attributes and methods from another class.
• Inheritance allows for code reusability and promotes the concept of 'is-a' relationship.

• There are different types of inheritance such as single inheritance, multiple inheritance, multilevel inheritance, and hierarchical inheritance.

• Example: Class B inheriting from Class A - 'class B: public A {}'
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Q4. How many characters are used in C.
Ans. 
C uses a set of 128 characters, including letters, digits, special characters, and control characters.
• C uses 26 letters (uppercase and lowercase), 10 digits (0-9), and various special characters like !, @, #, $, %, etc.

• C also includes control characters like newline, tab, carriage return, etc.

• The total number of characters used in C is 128.
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Q5. What is c. How many characters are used.
Ans. 
C is a programming language known for its efficiency and flexibility. It uses 256 characters.
• C is a high-level programming language used for system programming, embedded systems, and applications.

• C uses 256 characters, including letters, digits, special characters, and whitespace.

• Examples of characters in C include 'a', '1', '+', and ' '.
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Asked basics aptitude qns(profit loss,percentage)

Q1. About particular software
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Q1. About salary negotiation
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Q1. As a fresher, I was asked basic questions on programming languages such as Java, C++.
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Q2. Star Pattern Print in C
Ans. 
Printing star patterns in C using loops and nested loops.
• Use nested loops to print the desired pattern.

• Use a combination of spaces and stars to create the pattern.

• Experiment with different loop structures to create various patterns.
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Q3. What is Inheritance in OOPS
Ans. 
Inheritance in OOPS allows a class to inherit properties and behavior from another class.
• Child class inherits attributes and methods from a parent class

• Helps in code reusability and promotes the concept of hierarchy

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

• Example: Class Animal can be a parent class with attributes like name and methods like eat, and Class Dog can inherit from Animal wi
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Q4. What is Polymorphism in OOPS
Ans. 
Polymorphism in OOP refers to the ability of a single function or method to operate on different data types.
• Polymorphism allows objects of different classes to be treated as objects of a common superclass.

• There are two types of polymorphism: compile-time (method overloading) and runtime (method overriding).

• Example: Inheritance allows a child class to override a method of its parent class, providing different functional
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Q5. What is Overloading in OOPS
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Overloading in OOPS is the ability to define multiple methods in a class with the same name but different parameters.
• Allows multiple methods with the same name but different parameters

• Parameters can be different in number, type, or order

• Helps in improving code readability and reusability

• Example: having multiple constructors in a class with different parameters
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Q1. Wap to toggle the fourth bit of given number..?
Ans. 
Toggle the fourth bit of a given number.
• Extract the fourth bit using bitwise AND operation with 8 (1000 in binary)

• Toggle the fourth bit using bitwise XOR operation with 8 (1000 in binary)
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Q1. What is mutex and who it overcome with it..?
Ans. 
A mutex is a synchronization primitive used to control access to shared resources in a multi-threaded environment.
• Mutex stands for mutual exclusion

• It is used to prevent multiple threads from accessing shared resources simultaneously

• Mutexes are typically used to protect critical sections of code

• Example: In a multi-threaded program, a mutex can be used to ensure that only one thread can access a shared variable at a time
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Q1. Why you wanted to join this organisation only..?
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Basic aptitude questions

Simple coding question

Basic aptitude which also includes the technical mcqs and 2 coding ques

Q1. In technical round, basic core ques were asked and about prject
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