Nanoprecise Interview Questions and Answers

Q1. Some questions related to APIs/Postman.
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Q2. Some questions related to stakeholder management.
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Q3. Some easy questions related to SQL
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Q1. What are some key traits that an implementation analyst must have?
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Q2. Explain about your previous experience
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Q1. Have you ever mentored someone and have you ever led a team?
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Q2. How many micro-services you've worked with in a single project?
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Q3. How do you communicate among your team?
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Consisted of HTML , Javascript, React coding questions

Q1. Theroitacal qestions on Javascript
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Q2. Code absed questions
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2 DSA Questions, medium level

Q1. System Design for a application
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Q1. High Level System Design
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Q1. About yourself ?
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Q2. Just asked questions on previous role
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Q3. How many types of IOT devices are there
Ans. 
There are three main types of IoT devices: consumer, commercial, and industrial.
• Consumer IoT devices: Smart home devices like thermostats, lights, and security cameras.

• Commercial IoT devices: Smart meters, asset tracking systems, and connected vending machines.

• Industrial IoT devices: Sensors and actuators used in manufacturing, agriculture, and healthcare.
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Q1. Generate a Dataframe
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Assignment was to create an API for an expenses sharing application where users can input the total amount and the people to be shared the amount with and each individual amount in terms of either actual amount, percentage or split equally

Q1. Difference between process and threads
Ans. 
Processes are independent instances of a program, while threads are smaller units within a process sharing resources.
• Processes have their own memory space, while threads share the same memory space within a process.

• Processes are heavyweight, requiring more resources, while threads are lightweight.

• Processes communicate with each other through inter-process communication mechanisms, while threads can communicate directly...read more
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Q2. What is indexing in DBMS
Ans. 
Indexing in DBMS is a technique used to improve the performance of queries by allowing faster retrieval of data.
• Indexes are data structures that store a small portion of the table data in an optimized format for quick retrieval.

• They help in speeding up data retrieval operations like SELECT, UPDATE, DELETE queries.

• Examples of indexes include primary keys, unique keys, and composite keys.
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Q3. Examples and description of asymmetric encryption alogorithms
Ans. 
Asymmetric encryption algorithms use a pair of keys to encrypt and decrypt data, providing secure communication.
• RSA (Rivest-Shamir-Adleman) is a popular asymmetric encryption algorithm.

• Elliptic Curve Cryptography (ECC) is another commonly used asymmetric encryption algorithm.

• Asymmetric encryption is slower than symmetric encryption but provides better security.

• Public key is used for encryption and private key is used f
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Q4. Which sorting method is beneficial in which scenario
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Different sorting methods are beneficial in different scenarios based on factors like time complexity, space complexity, and input size.
• Quick Sort: Best for large datasets due to its average time complexity of O(n log n)

• Bubble Sort: Simple and easy to implement, but inefficient for large datasets with its time complexity of O(n^2)

• Merge Sort: Stable and efficient for large datasets with its time complexity of O(n log n)

• ...read more
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Q1. What are ACID properties in DBMS
Ans. 
ACID properties are a set of properties that guarantee reliability and consistency in database transactions.
• Atomicity: Ensures that either all operations in a transaction are completed successfully or none at all.

• Consistency: Ensures that the database remains in a consistent state before and after the transaction.

• Isolation: Ensures that the execution of multiple transactions concurrently does not interfere with each ot...read more
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Q2. Underlying data structure in Indexing and its time complexity
Ans. 
Indexing typically uses data structures like B-trees or hash tables for efficient retrieval, with time complexity of O(log n) or O(1) respectively.
• Common data structures for indexing include B-trees and hash tables

• B-trees are typically used for indexing in databases due to their balanced nature and efficient search operations

• Hash tables are used for indexing in scenarios where constant time lookup is desired, but may h
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Q3. Time complexity of a recursive fibonacci code
Ans. 
Time complexity of recursive fibonacci code is O(2^n)
• The time complexity of a recursive fibonacci code is exponential, O(2^n)

• This is because each call branches into two recursive calls, leading to exponential growth

• For example, calculating fibonacci(5) would result in 15 function calls
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Q4. The protocol behind Web Sockets (because it was in my resume)
Ans. 
Web Sockets is a communication protocol that provides full-duplex communication channels over a single TCP connection.
• Web Sockets allow for real-time, bi-directional communication between a client and a server.

• They are commonly used in chat applications, online gaming, and live data streaming.

• Web Sockets use the ws:// or wss:// protocol scheme in URLs.

• The protocol is initiated with a handshake between the client and se...read more
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Q1. Abstraction and interface
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Q2. Authentication and authorisation
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Q1. About past intern experience
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Q2. Product improvement question
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