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Codetentacles Technologies Blockchain Developer Interview Questions and Answers

Updated 23 Jan 2025

Codetentacles Technologies Blockchain Developer Interview Experiences

1 interview found

Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I was interviewed before Jan 2024.

Round 1 - One-on-one 

(3 Questions)

  • Q1. What are the different types of blockchains, and what are the differences between them?
  • Ans. 

    Different types of blockchains include public, private, and consortium blockchains.

    • Public blockchains are open to anyone and allow for anonymous participation, examples include Bitcoin and Ethereum.

    • Private blockchains are restricted to a specific group or organization, providing more control over permissions and data access.

    • Consortium blockchains are semi-decentralized, where multiple organizations share the responsibi...

  • Answered by AI
  • Q2. What are the different types of data types and their visibility?
  • Ans. 

    Different data types in blockchain development and their visibility

    • Primitive data types: int, float, bool, string (visible to all)

    • Structs: custom data structures (visible within the contract)

    • Arrays: collection of data (visible within the contract)

    • Mappings: key-value pairs (visible within the contract)

  • Answered by AI
  • Q3. How does a proxy contract work?
  • Ans. 

    A proxy contract acts as an intermediary between a user and a target contract, allowing the user to interact with the target contract through the proxy.

    • Proxy contract holds the logic of the target contract and delegates calls to it.

    • Users interact with the proxy contract, which forwards the calls to the target contract.

    • Proxy contracts can be upgraded without affecting the user's interaction with the target contract.

  • Answered by AI

Interview questions from similar companies

I applied via Walk-in and was interviewed before Dec 2020. There were 3 interview rounds.

Interview Questionnaire 

3 Questions

  • Q1. Basic Programming questions.
  • Q2. Fibonacci program
  • Q3. OOPS concepts.

Interview Preparation Tips

Interview preparation tips for other job seekers - Prepare basic OOPS concepts and basic programs.

I applied via Naukri.com and was interviewed in Aug 2020. There were 3 interview rounds.

Interview Questionnaire 

1 Question

  • Q1. Oops Concepts and Data Structure Questions.

Interview Preparation Tips

Interview preparation tips for other job seekers - Oops And Data Structure, Collection.

I applied via Campus Placement and was interviewed before Feb 2020. There were 6 interview rounds.

Interview Questionnaire 

4 Questions

  • Q1. Was interviewed as fresher?
  • Q2. Written test conducted? with verbal ability test ? GD
  • Q3. How would u deal with a problematic situation when you are working in a team?
  • Q4. What are your plans about higher studies?

Interview Preparation Tips

Interview preparation tips for other job seekers - it was basic with apptiude test and attitiude test.

Interview Questionnaire 

2 Questions

  • Q1. They asked me on java and I have joined as a fresher they not much questions as I got selected as fresher on oops concepts and collections
  • Q2. Please be confident while facing interview and they will check your communication skills

I applied via Company Website and was interviewed before Feb 2020. There was 1 interview round.

Interview Questionnaire 

2 Questions

  • Q1. They asked about dbms questions in the form of table formate
  • Q2. They asked code for some python program

Interview Preparation Tips

Interview preparation tips for other job seekers - Firstly they conducted computer based technical exam and then after qualifying that then we will go for face face interview and then lastly HR round will be held.

I applied via Campus Placement and was interviewed in Oct 2020. There were 4 interview rounds.

Interview Questionnaire 

5 Questions

  • Q1. Wap of bubble sort
  • Ans. 

    Bubble sort is a simple sorting algorithm that repeatedly steps through the list, compares adjacent elements and swaps them if they are in the wrong order.

    • Start from the first element and compare it with the next element

    • If the next element is smaller, swap them

    • Repeat this process for all elements in the array

    • Continue this process until no more swaps are needed

  • Answered by AI
  • Q2. Wap of prime number
  • Ans. 

    A program to print all prime numbers

    • Take input from user for range of numbers

    • Loop through the range and check if each number is prime

    • Print the prime numbers

  • Answered by AI
  • Q3. What is hashmap?
  • Ans. 

    Hashmap is a data structure that stores key-value pairs and allows constant time access to values based on their keys.

    • Hashmap uses a hash function to map keys to indices in an array.

    • Collisions can occur when multiple keys map to the same index, which can be resolved using techniques like chaining or open addressing.

    • Examples of hashmap implementations include Java's HashMap class and Python's dict type.

  • Answered by AI
  • Q4. What is inheritance
  • Ans. 

    Inheritance is a mechanism in object-oriented programming where a new class is created by inheriting properties of an existing class.

    • Inheritance allows code reuse and promotes code organization.

    • The existing class is called the parent or superclass, and the new class is called the child or subclass.

    • The child class inherits all the properties and methods of the parent class and can also add new properties and methods.

    • For...

  • Answered by AI
  • Q5. Call by value and call by reference

Interview Preparation Tips

Interview preparation tips for other job seekers - Be yourself

Skills evaluated in this interview

I applied via Walk-in and was interviewed in Mar 2021. There was 1 interview round.

Interview Questionnaire 

1 Question

  • Q1. Introduction your self in interview

Interview Preparation Tips

Interview preparation tips for other job seekers - Interview should be very easy and comfortable to the students. And be confident at the infront of interviewer

Interview Questionnaire 

1 Question

  • Q1. About my college projects and about my passion

I was interviewed in Mar 2021.

Interview Questionnaire 

1 Question

  • Q1. .net core , mvc basics and some scripting language

Interview Preparation Tips

Interview preparation tips for other job seekers - Stick to basics , know about your current project . If interviewer asks you if you have to ask anything , do ask . For my case I asked for his advice where I need to improve. He answered genuinely and even came to know about my other technical skills .
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Codetentacles Technologies Interview FAQs

How many rounds are there in Codetentacles Technologies Blockchain Developer interview?
Codetentacles Technologies interview process usually has 1 rounds. The most common rounds in the Codetentacles Technologies interview process are One-on-one Round.
What are the top questions asked in Codetentacles Technologies Blockchain Developer interview?

Some of the top questions asked at the Codetentacles Technologies Blockchain Developer interview -

  1. What are the different types of blockchains, and what are the differences betwe...read more
  2. What are the different types of data types and their visibili...read more
  3. How does a proxy contract wo...read more

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Codetentacles Technologies Blockchain Developer Interview Process

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