Sophos Technologies Senior Sdet Engineer Interview Questions and Answers

Q1. Advantage and disadvantage of framework.
Ans. 
Frameworks provide structure and pre-built components for software development, but can also limit flexibility and require learning curve.
• Advantage: Provides structure and pre-built components for faster development

• Advantage: Can improve code quality and maintainability

• Disadvantage: Can limit flexibility and customization

• Disadvantage: Requires learning curve and potential dependency issues

• Example: ReactJS provides a fr...read more
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Q1. What is Oops? Advantage and disadvantage
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Oops stands for Object-Oriented Programming. It is a programming paradigm that uses objects to represent real-world entities.
• Advantages: code reusability, modularity, encapsulation, inheritance, polymorphism

• Disadvantages: complexity, steep learning curve, performance overhead

• Example: creating a class 'Car' with properties like 'make', 'model', and 'year', and methods like 'start_engine' and 'stop_engine'
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Q1. Questions were mostly related to Django Rest Framework and internal working of it, apart from that there were questions related to Django ORM.
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Q2. Given an API request how would to resolve the space issue that is happening with GET
Ans. 
To resolve space issue with GET API request, consider pagination, compression, caching, and optimizing query parameters.
• Implement pagination to limit the number of results returned in each request.

• Use compression techniques like Gzip to reduce the size of the response data.

• Implement caching mechanisms to store frequently accessed data and reduce the number of requests.

• Optimize query parameters to only request necessary
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Q1. Complete resume based questions
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Q2. You must me thorough of what you have mentioned in your resume.
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Q1. Experience discussions
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Pair programming with engineer

Q1. Kubernetes practical applications
Ans. 
Kubernetes is used for container orchestration, scaling, and management in cloud-native applications.
• Automating deployment, scaling, and management of containerized applications

• Ensuring high availability and fault tolerance

• Facilitating easy scaling of applications based on demand

• Managing updates and rollbacks seamlessly

• Supporting multi-cloud deployments

• Example: Running microservices architecture on Kubernetes for a sca
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Dataweave logic questions

Q1. Basic HR questions
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Q2. Prepare basic interview answers
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Q1. Windows internals
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Q2. Windows apis like loaddll dynamically
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Q3. IPC mechanism in windows
Ans. 
IPC mechanism in Windows allows communication between processes through shared memory, message passing, and synchronization.
• IPC mechanisms in Windows include named pipes, mailslots, shared memory, and sockets.

• Named pipes allow communication between processes on the same machine or over a network.

• Mailslots are used for one-way interprocess communication.

• Shared memory allows processes to share data by mapping a region of...read more
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Q4. Multi-threading in windows
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Multi-threading in Windows allows multiple threads to run concurrently within a single process.
• Windows provides APIs like CreateThread and CreateProcess to create and manage threads.

• Threads share the same memory space within a process, allowing for efficient communication and resource sharing.

• Windows supports both user-mode and kernel-mode threads, with user-mode threads being more lightweight.

• Synchronization mechanism...read more
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Q5. C++ general questions
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Q1. Memory management
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Q2. Memory mapping in windows, file mapping
Ans. 
Memory mapping in Windows allows files to be mapped directly into memory for faster access and manipulation.
• Memory mapping allows files to be accessed as if they were in memory

• File mapping can be used for sharing data between processes

• Improves performance by reducing disk I/O operations

• Examples: CreateFileMapping, MapViewOfFile, UnmapViewOfFile
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Q3. Windows internal
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Q4. Critical section in windows
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Critical section in Windows is a synchronization mechanism used to protect shared resources from concurrent access.
• Critical sections are used to ensure mutual exclusion between threads accessing shared resources.

• They are implemented using the Windows API functions InitializeCriticalSection, EnterCriticalSection, and LeaveCriticalSection.

• Critical sections are more efficient than mutexes for synchronization within a sing...read more
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Tha aptitude exam was not very easy and not that difficult. It was something which one can easily get into.

Q1. Question related to 1. Servers 2. Coding practices 3. Database queries 4. Latest versions syntax
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