Knot Solutions Data Engineer Interview Questions and Answers

Q1. What is data entry?
Ans. 
Data entry is the process of entering, updating, or verifying data in a computer system.
• Entering data accurately and efficiently

• Updating existing data with new information

• Verifying data for accuracy and completeness
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Q2. What is your experience with data entry?
Ans. 
I have over 3 years of experience in data entry, including entering, verifying, and updating data in various databases.
• Proficient in using Microsoft Excel and other data entry software

• Accurate and efficient in typing and data entry tasks

• Experience in maintaining confidentiality and data integrity

• Handled large volumes of data entry tasks with tight deadlines
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Q3. What is difference between c and c++ ?
Ans. 
C is a procedural programming language while C++ is an object-oriented programming language.
• C is a procedural programming language, focusing on functions and procedures.

• C++ is an object-oriented programming language, allowing for classes, objects, and inheritance.

• C does not support classes and objects, while C++ does.

• C++ has features like polymorphism, encapsulation, and inheritance which are not present in C.

• C++ is an...read more
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Q4. How you work msword
Ans. 
I am proficient in using MS Word for data entry tasks.
• I am skilled in formatting text, tables, and images in MS Word.

• I can create and edit documents, including reports, letters, and spreadsheets.

• I am familiar with using templates and styles to maintain consistency in documents.

• I am experienced in using features like spell check, track changes, and mail merge.

• I am efficient in using keyboard shortcuts to speed up data e
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The aptitude test was relatively straightforward, consisting of both aptitude and technical questions, with a difficulty level ranging from easy to medium.

Q1. Was asked to write a code on basic DSA concept
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Q2. Then was asked basic questions on DSA and SQL
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Q1. They asked Java coding question
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Queue question - create queue from array

Q1. Working structure preference
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Q2. Salary preference
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Q3. No more questions
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DSA on trees, duration 2hrs

Trees DSA duration 20mins

If the cost price of an item is Rs. 150 and the selling price is Rs. 200, what is the profit percentage?

Q1. What is the difference between a stack and a queue? Give an example where you would use each.
Ans. 
A stack is a LIFO data structure while a queue is a FIFO data structure.
• Stack: Last In First Out (LIFO), used in undo/redo functionality, backtracking, and recursion.

• Queue: First In First Out (FIFO), used in job scheduling, breadth-first search, and printing.

• Stack uses push() and pop() operations while queue uses enqueue() and dequeue() operations.
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Q2. What is the difference between a compiler and an interpreter?
Ans. 
A compiler translates the entire program into machine code before execution, while an interpreter translates and executes the program line by line.
• A compiler converts the source code into an executable file, while an interpreter executes the code directly.

• Compilers typically produce faster and more efficient code, while interpreters provide faster development and debugging.

• Examples of compilers include GCC, Clang, and ...read more
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Q3. A compiler is a program that translates the entire source code into machine code before executing it. The source code is fed into the compiler, which analyzes and translates it into an executable file. Thi...read more
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Q1. How do you handle stress and pressure?
Ans. 
I handle stress and pressure by practicing time management, seeking support from colleagues, and maintaining a healthy work-life balance.
• I prioritize tasks and create a schedule to manage my time effectively.

• I communicate with my team and seek their assistance or guidance when needed.

• I engage in stress-relieving activities outside of work, such as exercising or spending time with loved ones.

• I practice mindfulness and d...read more
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Q1. Self Introduction
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Q1. How to secure data over the public internet?
Ans. 
Securing data over the public internet involves using encryption, secure protocols, VPNs, and regular security audits.
• Use encryption to protect data in transit, such as SSL/TLS for websites.

• Implement secure protocols like HTTPS, SSH, and SFTP for secure communication.

• Utilize Virtual Private Networks (VPNs) to create secure tunnels for data transmission.

• Regularly conduct security audits and updates to identify and patch...read more
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This is the round in which basic quant questions were asked

In this round basic 2 java questions were asked

In this round one topic was given and we need to discuss about that topic

Q1. What is java explain in detail
Ans. 
Java is a high-level, object-oriented programming language used to develop applications for various platforms.
• Java is platform-independent, meaning it can run on any platform with a Java Virtual Machine (JVM)

• It is known for its security features, such as the ability to run code in a sandbox environment

• Java is used for developing a wide range of applications, from web applications to mobile apps and games

• It is also used...read more
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Q2. What is searching and sorting
Ans. 
Searching is finding a specific item in a collection of items. Sorting is arranging items in a specific order.
• Searching involves looking for a specific item in a collection of items.

• Sorting involves arranging items in a specific order, such as alphabetical or numerical.

• Searching and sorting are commonly used in computer science and data analysis.

• Examples of searching algorithms include linear search and binary search.

• E...read more
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Q1. What is binary tree explain
Ans. 
A binary tree is a data structure consisting of nodes, where each node has at most two children.
• Nodes in a binary tree have a left and/or right child node.

• The topmost node is called the root node.

• Binary trees are used in search algorithms and data compression.

• Examples of binary trees include binary search trees and heap trees.
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Q1. What is your current location
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Q2. What is your salary expectations
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