SITA Technical Lead Interview Questions and Answers

Q1. As per technical requirements.
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Q2. As per technical requirements
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Q1. As per technical requirements.
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Q2. As per technical requirements
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Q1. As per technical requirements.
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Q2. As per technical requirements
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Q1. Is live data is life cycle aware. If it's aware what does ViewModel do?
Ans. 
Yes
• LiveData is lifecycle aware and can be used to observe changes in data.

• ViewModel provides a way to store and manage UI-related data across configuration changes.

• ViewModel can hold LiveData objects to provide data to the UI.

• LiveData and ViewModel work together to ensure data consistency and prevent memory leaks.
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Q2. How does viewmodel survive when activity is destroyed on configuration?
Ans. 
The ViewModel survives configuration changes by being retained by the system.
• ViewModels are designed to survive configuration changes like screen rotations or language changes.

• When an activity is destroyed and recreated, the ViewModel is not destroyed and retains its data.

• The ViewModel is associated with the activity's lifecycle and is retained until the activity is finished.

• The retained ViewModel instance can be acces...read more
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Q3. Advantage of mvp over mvc.
Ans. 
MVP offers better separation of concerns and easier unit testing compared to MVC.
• MVP separates the presentation layer from the business logic, making it easier to maintain and modify the codebase.

• MVP allows for easier unit testing as the presenter can be tested independently from the view.

• MVP provides better decoupling between components, enabling easier code reuse and scalability.

• MVP promotes a clear separation of con...read more
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Q4. How does SSL pinning works?
Ans. 
SSL pinning is a security technique that ensures a client only communicates with a server using a pre-defined public key.
• SSL pinning involves hardcoding the server's public key in the client's code or configuration.

• During the SSL handshake, the client checks if the server's public key matches the pinned key.

• If the keys match, the connection is established; otherwise, it is rejected.

• Pinning prevents man-in-the-middle at
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Q5. How do you achieve data security when saving data persistanly.
Ans. 
Data security can be achieved through encryption, access controls, backups, and regular security audits.
• Encrypt sensitive data using strong encryption algorithms.

• Implement access controls to restrict unauthorized access to the data.

• Regularly backup the data to prevent data loss.

• Conduct regular security audits to identify and fix vulnerabilities.

• Use secure protocols and communication channels for data transfer.

• Implement...read more
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Q6. Where to save encription key?
Ans. 
Encryption keys should be securely stored in a separate key management system.
• Encryption keys should not be stored alongside the encrypted data.

• Use a dedicated key management system (KMS) to store and manage encryption keys.

• Implement strong access controls and authentication mechanisms for the KMS.

• Consider using hardware security modules (HSMs) for added security.

• Regularly rotate encryption keys to minimize the impact
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Q1. Spring batch questions Questions related to asynch process
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Q2. Java 8 stream api questions
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Q1. Java Persistence API
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Q2. Functional Interface
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Q1. Programming questions related to tech stack
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Q1. Project discussion
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Q1. Salary discussion and later it's not offered salary waste of time attending this company interview
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Q1. Types of call in cobol. What is file status 39. What is AICA in CICS. Why do we use cursor in Cobol+db2 program. What are some compiler options. What is the utility for bind. How would you dynamically read...read more
Ans. 
Technical Lead interview questions on COBOL, DB2, and CICS
• Types of call in COBOL

• File status 39 indicates end-of-file reached

• AICA is Abend-AID CICS Abend RSN (Reason) Code

• Cursor is used to fetch rows from DB2 tables sequentially

• Compiler options include OPTIMIZE, DEBUG, and LIST

• BIND utility is used to bind DB2 programs to database

• Dynamic VSAM file reading can be done using READNEXT function

• -911 SQLCODE indicates deadlock...read more
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Q2. What is most satisfactory work that you did.
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Q1. Why you left previous organization. What is current CTC. What is expected CTC. Where would you be interested to work for career progression(what you want to pursue)? Are you willing to relocate? Explain th...read more
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Hackerank test

Q1. Difference between runnable and callable interface?
Ans. 
Runnable interface is used for running a task, while Callable interface is used for returning a result after running a task.
• Runnable interface has a run() method that does not return any value.

• Callable interface has a call() method that returns a value.

• Callable interface can throw an exception while Runnable interface cannot.

• Callable interface can be used with ExecutorService to submit tasks and get results.

• Example of ...read more
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