Perfios Software Solutions Software Developer Interview Questions and Answers

1st round is aptitude and pesudocode

Q1. Mostly python questions
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Q2. List questions and basic to mediumprogram
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In first round 4 coding question like 1 dsa 2 database and one is api and question is very simple . coding round was conducted in hackerrank

Q1. DSA QUESTION LIKE TREE AND GRAPH
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Q2. DP AND SORTING APPROACH
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Again same but dsa question and oops concept in deep level

Q1. Rest Apis questions
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Q1. Core java and OOPS and LLD
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Q1. Something based on hashet
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Q2. Same with this too
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Basic questions were given..bar graphs,pie charts

Q1. What is Oops concept?
Ans. 
Oops concept stands for Object-Oriented Programming concepts which include principles like inheritance, encapsulation, polymorphism, and abstraction.
• Oops concept is a programming paradigm that focuses on objects and classes.

• It includes principles like inheritance, where a class can inherit properties and behaviors from another class.

• Encapsulation is another principle where data is wrapped within a class and can only be...read more
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Q1. Internal working of Hash Map
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Hash Map is a data structure that stores key-value pairs and uses a hash function to map keys to their corresponding values.
• Hash Map uses a hash function to determine the index of the key-value pair in the underlying array.

• Collisions can occur when multiple keys hash to the same index, which can be resolved using techniques like chaining or open addressing.

• Hash Map typically has a load factor threshold to determine whe...read more
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It was CAD Developer position so they asked about cad and some aptitude questions.

Q1. Asked about AutoCAD APIs.
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Q2. About C# language.
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Q1. Diff var let const
Ans. 
diff var let const
• var is function-scoped, let and const are block-scoped

• var can be redeclared and reassigned, let can be reassigned but not redeclared, const cannot be reassigned or redeclared

• const must be initialized during declaration, let and var can be declared without initialization
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Q1. Related to node js architecture
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Q1. Expectation and all
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