Grant Thornton IT Analyst Interview Questions and Answers

Q1. Introduce yourself. Roles and Projects you were part of.
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Q2. SQL joins, CTEs, Snowflake
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Q3. Python libraries, data cleaning techniques
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Q1. Its all about the wintel technology.
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Q2. How domain migration work.
Ans. 
Domain migration involves transferring data, applications, and infrastructure from one domain to another.
• Assess current domain setup and requirements for new domain

• Plan migration strategy including timeline and resources

• Backup data and applications to prevent loss

• Test migration process in a controlled environment

• Execute migration with minimal downtime and disruptions

• Verify data integrity and functionality post-migratio...read more
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Q3. How you troubalshoot AD issue
Ans. 
To troubleshoot AD issues, I analyze logs, check network connectivity, verify DNS settings, and test user authentication.
• Analyze event logs for any errors or warnings related to Active Directory

• Check network connectivity between the domain controller and client machines

• Verify DNS settings to ensure proper resolution of domain controller names

• Test user authentication by logging in with different user accounts
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Some easy mcq coding questions

Q1. 1. What is serialization? 2. What is a Singleton class? 3. Difference b/w interface and abstract class. And a few more basic java 8 questions.
Ans. 
Serialization is the process of converting an object into a stream of bytes to store or transmit data.
• Serialization is used to save the state of an object and recreate it when needed.

• In Java, serialization is achieved by implementing the Serializable interface.

• Example: ObjectOutputStream and ObjectInputStream classes are used for serialization in Java.
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Q1. Some basic HR questions like how do you manage pressure at work, Willing to relocate or not, etc.
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Q1. ITIL, Office 365, Engineering Applications
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Q2. Interview was Awesome. Leads & Global managers are tech savy
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Q1. Semi technical scenario based questions
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Communication check & general discussion.

Q1. Difference between SQL and NoSQL
Ans. 
SQL is a traditional relational database management system, while NoSQL is a non-relational database system.
• SQL is structured, uses tables with predefined schema, and is good for complex queries.

• NoSQL is unstructured, uses collections or documents, and is good for large amounts of data with simple queries.

• SQL is ACID compliant, ensuring data integrity, while NoSQL is BASE (Basically Available, Soft state, Eventually co...read more
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Q2. Reverse a linked list recursively
Ans. 
Reverse a linked list recursively by swapping pointers
• Start by checking if the current node is null or the next node is null

• If so, return the current node as it is the new head of the reversed list

• Otherwise, recursively call the function on the next node and swap pointers
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Q3. Implement a min stack
Ans. 
A min stack is a stack data structure that supports the usual push and pop operations, along with an additional operation to retrieve the minimum element in constant time.
• Create a stack to store the elements and another stack to store the minimum values encountered so far.

• When pushing an element, check if it is smaller than the current minimum. If so, push it onto the minimum stack.

• When popping an element, check if it ...read more
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Q4. Implement two stacks in a single array
Ans. 
Implement two stacks in a single array using two different approaches
• Divide the array into two halves and use one half for each stack

• Use two pointers, one for each stack, and move them towards each other as elements are pushed or popped

• Consider edge cases like stack overflow and underflow
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Q5. Was asked to write an sql query involing group by and joins
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Q1. About dot net full stack developer
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