Barclays Application Support Engineer Interview Questions and Answers

Q1. Application production support
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Q2. SQL windows server Linux MSSQL
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Q3. Application support both UAT and production
Ans. 
Application support involves providing assistance and troubleshooting for both UAT (User Acceptance Testing) and production environments.
• Application support engineers are responsible for resolving issues and providing technical support for applications in both UAT and production environments.

• They ensure that applications are functioning properly and troubleshoot any issues that arise during testing or in the live produ...read more
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Q4. Co-ordinate with and vendor
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Related questions for support

Mostly around multithreading and collections in Java

Q1. Design of singleton pattern , Concurrent hashmap
Ans. 
Singleton pattern ensures a class has only one instance, while ConcurrentHashMap allows multiple threads to access and modify a map concurrently.
• Singleton pattern involves creating a class with a private constructor and a static method to return the instance.

• ConcurrentHashMap is a thread-safe implementation of the Map interface, allowing multiple threads to access and modify the map concurrently.

• To implement a singleto...read more
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Q1. Design a etl system for loading structured data
Ans. 
Design an ETL system for loading structured data
• Identify data sources and destinations

• Create data extraction processes

• Transform data to match destination schema

• Load transformed data into destination
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Q1. General HR question about your strength and weakness and interests.
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