Synoptek Servicenow Developer Interview Questions and Answers

Aptitude test

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Q1. Puzzle , sql related questions
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It was done on hackerrank the first question was related to array and second was on linked list and last was on sql

Q1. Oops concept stack program SQL basics
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Q1. Normal question related to me and job
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They asked some general Quantitative and logical questions and code snippets.

Q1. String Reverse and Two Sum
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Q2. Related to my projects and Tech Stacks
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Q1. This is the Second technical round. The interviewer asked about everything from my project.
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Q2. Asked some sql queries like joins and set operation
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Spring boot java 30 min

Java angular spring boot one hour

Q1. 30 min salary negotiations
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2 coding question, 20 aptitude questions and english questions in 90 minutes

Q1. What is HashMap?
Ans. 
HashMap is a data structure that stores key-value pairs and provides constant time complexity for basic operations.
• HashMap allows quick access to values based on their keys

• Keys must be unique and values can be duplicated

• HashMap is not thread-safe and requires synchronization for concurrent access

• Java's HashMap implementation uses hashing to distribute keys across buckets
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Q2. It’s a collection framework.
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The aptitude test was comprising of questions related to qualitative and quantitative reasoning along with basic computer science questions and coding questions also.

Q1. Why are pointers not used in Java but in C and C++ ?
Ans. 
Java has automatic memory management, so pointers are not needed.
• Java has a garbage collector that automatically manages memory.

• Pointers can lead to memory leaks and security vulnerabilities.

• C and C++ are low-level languages that require manual memory management.
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Q2. Types of access modifiers.
Ans. 
Access modifiers control the visibility and accessibility of class members.
• Public: accessible from anywhere

• Private: accessible only within the class

• Protected: accessible within the class and its subclasses

• Default: accessible within the same package
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Q3. Explain polymorphism.
Ans. 
Polymorphism is the ability of an object to take on many forms.
• Polymorphism allows objects of different classes to be treated as if they are of the same class.

• It is achieved through method overriding and method overloading.

• Examples include function overloading, operator overloading, and inheritance.

• Polymorphism helps in achieving loose coupling and flexibility in code design.
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Q1. Tell me something about yourself.
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Q2. Are you wishing to relocate ?
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Q3. Do you know about the bond ?
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Q1. Asked about servicenow scripting
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