TriGeo Technologies Senior GIS Engineer Interview Questions and Answers

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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Easy problem on java

Q1. Technical discussion
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Q1. More than technology,a senior recruiter asks where you stay which gali you stay,which temple is near by,what your husband do,getting into more personal and final he will ask your janam kundali and tell you...read more
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Q1. Senior recruiter will ask more personal questions
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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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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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Q1. How to check a number is power of 2
Ans. 
To check if a number is a power of 2, we can use bitwise operations.
• A power of 2 has only one bit set to 1, so we can use the bitwise AND operator to check if the number is a power of 2.

• If n is a power of 2, then n & (n-1) will be 0.

• For example, 8 (1000 in binary) is a power of 2, and 8 & 7 (0111 in binary) is 0.
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Q2. Sort a stack without using another data structure
Ans. 
Sort a stack without using another data structure
• Use recursion to pop the top element and insert it at the bottom of the remaining stack

• Repeat until the stack is sorted in ascending order

• Time complexity: O(n^2), space complexity: O(n) due to recursion
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Q3. Check weather array have continuous increasing than decreasing value
Ans. 
Check if array has continuous increasing and decreasing values
• Loop through the array and check if each element is greater than the previous one

• Once you find the maximum element, check if the remaining elements are in decreasing order

• If yes, return true else false
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Q1. Design a cricinfo (LLD)
Ans. 
Design a cricinfo (LLD)
• Identify the entities: players, teams, matches, scorecards, tournaments, etc.

• Define the relationships between entities

• Create a database schema to store the data

• Implement APIs to fetch and update data

• Design a UI to display the information

• Consider scalability and performance

• Ensure data security and privacy
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Q1. Share details of your previous job.
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Q2. Why should we hire you?
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Q3. What are your strengths and weaknesses?
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Logical reasoning And aptitude test

C++, python and Java programming