Knowledgeworks Global Senior Associate Interview Questions and Answers for Experienced

Q1. What is the use of namespace in Php?
Ans. 
Namespace in PHP is used to avoid naming conflicts between classes, functions, and variables.
• Namespace allows grouping of related classes, functions, and variables under a common name.

• It helps in organizing code and makes it easier to maintain.

• Namespace can be declared using the 'namespace' keyword followed by the namespace name.

• Example: namespace MyNamespace;

• To use a class or function from a namespace, we need to spec...read more
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Q2. Difference between interface and abstract class
Ans. 
Interface defines only method signatures while abstract class can have both method signatures and implementations.
• An interface can be implemented by multiple classes while an abstract class can only be extended by one class.

• An abstract class can have constructors while an interface cannot.

• An abstract class can have non-abstract methods while an interface can only have abstract methods.

• An abstract class can have instanc...read more
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Medium level questions , 1 hr

Q1. Medium level, technical knowledge test
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Q1. Very low level system design
Ans. 
Design a low-level system for a software engineer interview.
• Start by understanding the requirements and constraints of the system.

• Identify the components and their interactions.

• Consider the data structures and algorithms needed.

• Think about performance, scalability, and fault tolerance.

• Document the design and discuss trade-offs.
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Ecommerce platform coding test

Q1. Related to technology.
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Q2. Prepare for standard coding pattern
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Q3. We are using many technologies and languages so we need a full stack developer
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Q4. Prepare for ASP.NET and oops
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Q5. ReactJS, AWS, SQL, other database
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Q1. Logical and team-building questions.
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1 hour Hacker Rank Platform Medium To Hard Level Problems are there.

Q1. DSA,OOPS,DBMS One coding Problem on Arrays
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Q1. Discussion On Projects And Some DSA Topics Like Stacks,Queues Problems
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Q1. Assessment given and explain the program.
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Q2. Basic questions and docker related questions
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They will give javascript coding(based on your role)question we need to solve and submit the solution

Q1. Asked basic js questions and some logical questions
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It was a 90 minute coding test, involving 3 problems:
1-Given points on a 2d plane, you can delete one point, what is the minimum maximum distance you can have?
2-LFU Cache
3-Given an array with elements 0,1, your task is to find number of ways to divide this array into contiguous chunks so that each chunk has only one 1 in it.

Q1. How do you avoid method overriding?
Ans. 
To avoid method overriding, make the method final or private.
• Declare the method as final to prevent it from being overridden in subclasses.

• Declare the method as private to hide it from subclasses.

• Use the @Override annotation to ensure that a method is actually overriding a superclass method.
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Q2. What is the 'finalize' keyword for?
Ans. 
The 'finalize' keyword is used in Java to perform cleanup operations before an object is garbage collected.
• The 'finalize' method is called by the garbage collector before reclaiming an object's memory.

• It can be used to release resources like closing files or sockets.

• It is not recommended to rely on 'finalize' for resource cleanup as it is not guaranteed to be called.
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