Latest Questions 214 total
0
0
answers
121What are ACID properties in databases and why are they important?
I'm learning about database management systems and frequently come across the term ACID properties. I understand that ACID stands for Atomic...
0
0
answers
122What is database normalization? Explain 1NF, 2NF, and 3NF with examples.
I'm learning database design and often hear about database normalization and normal forms like 1NF, 2NF, and 3NF. I understand they're used ...
0
0
answers
123What are embeddings in AI and why are they important for large language models?
I'm learning about AI, large language models (LLMs), and Retrieval-Augmented Generation (RAG), and I frequently come across the term embeddi...
0
0
answers
124What is the difference between @staticmethod, @classmethod, and instance methods in Python?
I'm learning object-oriented programming in Python and often see methods defined as @staticmethod, @classmethod, or regular instance methods...
0
0
answers
125What are metaclasses in Python and when should you use them?
I'm learning advanced Python concepts and recently came across metaclasses. I understand that classes are objects in Python, but I'm confuse...
0
1
answers
126What are the most common coding interview mistakes and how can you avoid them?
I'm preparing for software developer interviews and want to know the common mistakes candidates make during coding rounds. Apart from writin...
0
1
answers
127What is underfitting in machine learning and how can you prevent it?
I'm learning machine learning and often come across the term underfitting when training models. I understand it happens when a model doesn't...
0
1
answers
128What are HTTP status codes every developer should know?
I'm learning web development and often see HTTP status codes like 200, 201, 301, 400, 401, 403, 404, and 500 when working with APIs and web ...
0
1
answers
129What is password hashing and why should developers use bcrypt?
I'm learning about user authentication and password security. Many tutorials recommend using bcrypt instead of storing plain-text passwords ...
0
1
answers
130What is MCP (Model Context Protocol) and why is it becoming important for AI applications?
I've been hearing about the Model Context Protocol (MCP) in discussions around AI agents and LLMs. How does MCP work, what problems does it ...
0
1
answers
131What is the difference between a product company and a service company for developers?
**Service Company (IT Services / Outsourcing):**
TCS, Infosys, Wipro, HCL, Cognizant
- You work on clients' projects
- Technology stack deci...
0
1
answers
132How to answer 'Tell me about yourself' in a tech interview?
This is always the first question — most candidates waste it. Here's the formula:
**Structure: Present → Past → Future**
*Present:* ...
0
0
answers
133What is the difference between OpenAI GPT-4o and GPT-4o-mini?
Both are OpenAI models but optimised for different use cases:
| Feature | GPT-4o | GPT-4o-mini |
|---|---|---|
| Intelligence | Highest | G...
0
0
answers
134What are LangChain agents and how do they differ from chains?
**LangChain Chains:**
- Fixed, predefined sequence of steps
- The flow is hardcoded by the developer
- Deterministic — same input → same...
0
0
answers
135What is a vector database and why is it used in AI applications?
A vector database stores data as high-dimensional vectors (embeddings) and enables fast similarity search.
**Why it's needed:**
LLMs unders...
