Integer Telecom Services Utran Engineer Interview Questions and Answers

Q1. Basic for Core java
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Q2. Basics of selenium
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Q1. More on framework side
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Q2. Few question on Manual testing
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Q1. Intro about yourself
Ans. 
I am a Senior Engineer with 10+ years of experience in software development, specializing in backend systems and cloud technologies.
• 10+ years of experience in software development

• Specialize in backend systems and cloud technologies

• Strong problem-solving skills

• Experience with large-scale systems

• Proficient in programming languages like Java, Python, and SQL
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Q2. Discussion on Job role
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Q1. Oops related questions
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Q2. C language quizzes
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Technical aspects about linked list,trees, stacks

Topic related to humanities

Q1. Is a valid decimal
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Q2. Return the substring in a main string, which is composition of given string
Ans. 
Find and return all substrings in a main string that match a given string.
• Iterate through the main string and check for matches with the given string

• Use substring function to extract potential matches

• Store all matching substrings in an array and return it
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Mixed conceptual questions from java8, Spring Boot and SQL and microservices

Q1. One round technical question and coding on Java, Java 8, Spring boot,Rest webservices, SQL. Code for rest API using jpa for CRUD.
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Q2. Singleton pattern for thread safety .
Ans. 
Singleton pattern ensures only one instance of a class is created and provides a global point of access to it.
• Use lazy initialization to create the instance only when needed.

• Use synchronized keyword to make the getInstance() method thread-safe.

• Consider using double-checked locking for better performance.

• Use enum to implement singleton pattern as it is inherently thread-safe.
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Q3. Linked list implementation
Ans. 
Linked list is a data structure where each element points to the next element in the sequence.
• Nodes contain data and a reference to the next node

• Insertion and deletion can be done efficiently in a linked list

• Traversal starts from the head node and follows the next pointers
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Q1. Parenthesis balancing question
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Q2. Caching in Hibernate
Ans. 
Caching in Hibernate improves performance by storing frequently accessed data in memory.
• Hibernate supports first-level cache at session level

• Second-level cache can be configured at session factory level

• Caching strategies include read-only, read-write, and transactional

• Cache providers like Ehcache, Infinispan, and Hazelcast can be used
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Q3. Maven scope questions
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Q4. Ci and CD concept
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Q1. Salary negotiation
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Q1. They had asked some questions of Solar sector...
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Q1. Discuss about Some personal questions as well as Location details
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IQ test is the first round you need to answer all questions correctly

Q1. Tell me about yourself
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Q2. What will you contribute for the company
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