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Protocol Zone Front end Developer Interview Questions and Answers

Updated 5 Mar 2024

7 Interview questions

A Front end Developer was asked
Q. What are the key features of SCSS?
Ans. 

SCSS is a preprocessor scripting language that is a superset of CSS, adding features like variables, nesting, and mixins.

  • Variables allow for reusable values throughout a stylesheet

  • Nesting helps to keep styles organized and easier to read

  • Mixins allow for reusable blocks of styles to be included in other selectors

  • SCSS supports operations like math calculations and functions

  • SCSS can be compiled into regular CSS for u...

A Front end Developer was asked
Q. What is WebSocket and why is it used?
Ans. 

Websocket i.o is a JavaScript library that enables real-time, bidirectional and event-based communication between the browser and the server.

  • Allows for real-time communication between client and server

  • Enables bidirectional data transfer

  • Supports event-based communication

  • Used for applications requiring real-time updates like chat applications, online gaming, live tracking, etc.

Front end Developer Interview Questions Asked at Other Companies

Q1. Non-Decreasing Array Problem Statement Given an integer array ARR ... read more
Q2. Find Unique Element in Array You have been provided an integer ar ... read more
asked in JUSPAY
Q3. Dijkstra's Shortest Path Problem Statement You are given an undir ... read more
asked in JUSPAY
Q4. Encode N-ary Tree to Binary Tree Problem Statement You are provid ... read more
Q5. Check If Linked List Is Palindrome Given a singly linked list of ... read more
A Front end Developer was asked
Q. What is the difference between a for...in and a for...of loop?
Ans. 

forIn loop iterates over the enumerable properties of an object, while forOf loop iterates over the values of an iterable object.

  • forIn loop is used for iterating over object properties, while forOf loop is used for iterating over array elements.

  • forIn loop can be used with objects, while forOf loop can be used with arrays, strings, maps, sets, etc.

  • Example: forIn loop - for (let key in object) { console.log(key); }

  • E...

A Front end Developer was asked
Q. Is it optimal to use Redux for managing a single state?
Ans. 

No, it is not optimal to use redux for single state

  • Redux is typically used for managing complex state across multiple components

  • Using redux for a single state can add unnecessary complexity to the codebase

  • Consider using React's built-in state management for simpler cases

A Front end Developer was asked
Q. What motivates you to join Protocol Zone?
Ans. 

I am motivated to join ProtocolZone because of their innovative projects and collaborative team environment.

  • Exciting projects at ProtocolZone

  • Collaborative team environment

  • Opportunity for growth and learning

  • Alignment with company values and mission

A Front end Developer was asked
Q. What is Redux, and when should it be used?
Ans. 

Redux is a predictable state container for JavaScript apps. It helps manage the state of your application in a more organized way.

  • Redux is typically used in large-scale applications with complex state management needs

  • It helps in maintaining a single source of truth for the state of your application

  • Redux works well with React, but can be used with any other JavaScript framework or library

  • Actions are dispatched to u...

A Front end Developer was asked
Q. What is filter method which is better to use filter method or foor loop
Ans. 

The filter method is a built-in JavaScript method used to create a new array with all elements that pass a certain condition.

  • Filter method is more concise and readable compared to for loop

  • Filter method is more declarative and functional programming oriented

  • Example: const numbers = [1, 2, 3, 4, 5]; const evenNumbers = numbers.filter(num => num % 2 === 0);

  • Example: const words = ['hello', 'world', 'example']; const s...

Are these interview questions helpful?

Protocol Zone Front end Developer Interview Experiences

1 interview found

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

I applied via Company Website and was interviewed in Feb 2024. There were 3 interview rounds.

Round 1 - Assignment 

It was a MCQ based questions on JavaScript, React, Redux

1 Coding question from string topic

Round 2 - Technical 

(6 Questions)

  • Q1. What is redux, when to use it
  • Ans. 

    Redux is a predictable state container for JavaScript apps. It helps manage the state of your application in a more organized way.

    • Redux is typically used in large-scale applications with complex state management needs

    • It helps in maintaining a single source of truth for the state of your application

    • Redux works well with React, but can be used with any other JavaScript framework or library

    • Actions are dispatched to update...

  • Answered by AI
  • Q2. Is it optimal to use redux for single state
  • Ans. 

    No, it is not optimal to use redux for single state

    • Redux is typically used for managing complex state across multiple components

    • Using redux for a single state can add unnecessary complexity to the codebase

    • Consider using React's built-in state management for simpler cases

  • Answered by AI
  • Q3. What are the key features of SCSS
  • Ans. 

    SCSS is a preprocessor scripting language that is a superset of CSS, adding features like variables, nesting, and mixins.

    • Variables allow for reusable values throughout a stylesheet

    • Nesting helps to keep styles organized and easier to read

    • Mixins allow for reusable blocks of styles to be included in other selectors

    • SCSS supports operations like math calculations and functions

    • SCSS can be compiled into regular CSS for use in...

  • Answered by AI
  • Q4. What is Websocket i.o, why it is being used
  • Ans. 

    Websocket i.o is a JavaScript library that enables real-time, bidirectional and event-based communication between the browser and the server.

    • Allows for real-time communication between client and server

    • Enables bidirectional data transfer

    • Supports event-based communication

    • Used for applications requiring real-time updates like chat applications, online gaming, live tracking, etc.

  • Answered by AI
  • Q5. Difference between forIn and forOf loop,
  • Ans. 

    forIn loop iterates over the enumerable properties of an object, while forOf loop iterates over the values of an iterable object.

    • forIn loop is used for iterating over object properties, while forOf loop is used for iterating over array elements.

    • forIn loop can be used with objects, while forOf loop can be used with arrays, strings, maps, sets, etc.

    • Example: forIn loop - for (let key in object) { console.log(key); }

    • Exampl...

  • Answered by AI
  • Q6. What is filter method which is better to use filter method or foor loop
  • Ans. 

    The filter method is a built-in JavaScript method used to create a new array with all elements that pass a certain condition.

    • Filter method is more concise and readable compared to for loop

    • Filter method is more declarative and functional programming oriented

    • Example: const numbers = [1, 2, 3, 4, 5]; const evenNumbers = numbers.filter(num => num % 2 === 0);

    • Example: const words = ['hello', 'world', 'example']; const shortW...

  • Answered by AI
Round 3 - HR 

(2 Questions)

  • Q1. What motivates you to join protocolzone
  • Ans. 

    I am motivated to join ProtocolZone because of their innovative projects and collaborative team environment.

    • Exciting projects at ProtocolZone

    • Collaborative team environment

    • Opportunity for growth and learning

    • Alignment with company values and mission

  • Answered by AI
  • Q2. Any questions from your side

Interview Preparation Tips

Topics to prepare for Protocol Zone Front end Developer interview:
  • Javascript
  • React.Js
  • Redux
  • Array method in javascript
  • String method in javascript
Interview preparation tips for other job seekers - Make sure your are aware of the basics of javascript and react and knowledge of redux

Skills evaluated in this interview

Top trending discussions

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Interview Tips & Stories
5d (edited)
a team lead
Why are women still asked such personal questions in interview?
I recently went for an interview… and honestly, m still trying to process what just happened. Instead of being asked about my skills, experience, or how I could add value to the company… the questions took a totally unexpected turn. The interviewer started asking things like When are you getting married? Are you engaged? And m sure, if I had said I was married, the next question would’ve been How long have you been married? What does my personal life have to do with the job m applying for? This is where I felt the gender discrimination hit hard. These types of questions are so casually thrown at women during interviews but are they ever asked to men? No one asks male candidates if they’re planning a wedding or how old their kids are. So why is it okay to ask women? Can we please stop normalising this kind of behaviour in interviews? Our careers shouldn’t be judged by our relationship status. Period.
Got a question about Protocol Zone?
Ask anonymously on communities.

Interview questions from similar companies

Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Company Website and was interviewed in Nov 2024. There were 2 interview rounds.

Round 1 - Coding Test 

2+2 coding formula in java script

Round 2 - HR 

(2 Questions)

  • Q1. Regarding salary expectation
  • Q2. Regarding bank account

Front end Developer Interview Questions Asked at Other Companies

Q1. Non-Decreasing Array Problem Statement Given an integer array ARR ... read more
Q2. Find Unique Element in Array You have been provided an integer ar ... read more
asked in JUSPAY
Q3. Dijkstra's Shortest Path Problem Statement You are given an undir ... read more
asked in JUSPAY
Q4. Encode N-ary Tree to Binary Tree Problem Statement You are provid ... read more
Q5. Check If Linked List Is Palindrome Given a singly linked list of ... read more
Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
2-4 weeks
Result
-

I applied via LinkedIn

Round 1 - Coding Test 

Python coding tests and technical interviews.

Round 2 - HR 

(1 Question)

  • Q1. What cybersecurity skills do you possess?
  • Ans. 

    I possess strong cybersecurity skills including knowledge of network security, encryption, penetration testing, and incident response.

    • Knowledge of network security protocols and best practices

    • Experience with encryption techniques and tools

    • Proficiency in conducting penetration testing to identify vulnerabilities

    • Ability to respond to and mitigate security incidents

    • Familiarity with security compliance standards such as GD...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Be knowledgeable about networking and security, including CompTIA certifications.
Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
Selected Selected
Round 1 - Coding Test 

Asked some medium level SQL questions

Round 2 - HR 

(1 Question)

  • Q1. Everything that the HR asks
Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Coding Test 

Frontend development with react

Interview experience
5
Excellent
Difficulty level
Easy
Process Duration
Less than 2 weeks
Result
Selected Selected

I appeared for an interview in Dec 2024, where I was asked the following questions.

  • Q1. Tell be about your self
  • Ans. 

    I am a passionate software developer with a strong background in full-stack development and a love for problem-solving.

    • Experience in JavaScript frameworks like React and Angular, building responsive web applications.

    • Proficient in backend technologies such as Node.js and Express, creating RESTful APIs.

    • Strong understanding of databases, both SQL (PostgreSQL) and NoSQL (MongoDB), for data management.

    • Worked on a team proje...

  • Answered by AI
  • Q2. What inspired you to apply for this role ?
  • Ans. 

    I was inspired by the opportunity to innovate and contribute to impactful projects in a collaborative environment.

    • Passion for technology: I've always been fascinated by how software can solve real-world problems, like developing an app that helps users track their health.

    • Alignment with company values: Your commitment to sustainability resonates with my personal values, and I want to be part of a team that makes a diffe...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - The interview was very good and this for helpful for me to join the company
Interview experience
5
Excellent
Difficulty level
Easy
Process Duration
2-4 weeks
Result
Selected Selected

I appeared for an interview before Jun 2024, where I was asked the following questions.

  • Q1. Tell me about a time when you worked in a team
  • Q2. How do you handle stress or pressure in the workplace
  • Ans. 

    I manage stress by prioritizing tasks, maintaining open communication, and practicing mindfulness techniques to stay focused and calm.

    • Prioritize tasks: I create a to-do list to focus on high-impact tasks first, ensuring I meet deadlines without feeling overwhelmed.

    • Open communication: I discuss challenges with my team or manager, which helps in finding solutions and reduces feelings of isolation.

    • Mindfulness techniques: ...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Interview is very easy
Are these interview questions helpful?
Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
-

I appeared for an interview before Jun 2024, where I was asked the following questions.

  • Q1. How do you prioritize tasks
  • Ans. 

    I prioritize tasks by assessing urgency, importance, and deadlines to ensure efficient workflow and project success.

    • Use the Eisenhower Matrix to categorize tasks into urgent vs. important.

    • Set clear deadlines for each task to manage time effectively.

    • Break larger tasks into smaller, manageable steps to avoid overwhelm.

    • Regularly review and adjust priorities based on project changes or new information.

    • Example: If a bug fix...

  • Answered by AI
  • Q2. How do you stay current with industry developments
  • Ans. 

    I stay current with industry developments through continuous learning, networking, and engaging with the tech community.

    • Subscribe to tech blogs and newsletters like TechCrunch and Hacker News for the latest updates.

    • Participate in online courses on platforms like Coursera or Udemy to learn new technologies.

    • Attend industry conferences and meetups to network and share knowledge with peers.

    • Follow influential developers and...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Gain experience, bulid your network, and enhance your skills by freelancing or volunteering.
Round 1 - Technical 

(2 Questions)

  • Q1. What is struct keyword
  • Ans. 

    The struct keyword is used in programming languages to define a user-defined data type that contains multiple variables of different types.

    • Structs are used to group related data together.

    • They can have different types of variables, including other structs.

    • Structs can be used to create complex data structures.

    • They are commonly used in object-oriented programming languages.

  • Answered by AI
  • Q2. What is Class keyword
  • Ans. 

    The class keyword is used in object-oriented programming to define a blueprint for creating objects.

    • The class keyword is used in languages like Java, C++, and Python.

    • It allows the programmer to define the properties and behaviors of an object.

    • Objects created from a class are called instances.

    • Classes can have attributes (variables) and methods (functions).

    • Inheritance allows classes to inherit properties and behaviors fr...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - this is a test message to test platform. Best of luck.

Skills evaluated in this interview

Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I appeared for an interview in Nov 2024, where I was asked the following questions.

  • Q1. What interests you most about working at apptunix?
  • Ans. 

    Apptunix offers a dynamic environment for innovation, collaboration, and growth in mobile and web application development.

    • Innovative Projects: Working on cutting-edge technologies like AI and IoT, which allows me to push my skills and creativity.

    • Collaborative Culture: The emphasis on teamwork and knowledge sharing fosters a supportive environment where I can learn from experienced colleagues.

    • Career Growth Opportunities...

  • Answered by AI
  • Q2. How do you handle tight deadlines in app development?
  • Ans. 

    Handling tight deadlines in app development requires effective planning, prioritization, and communication to ensure timely delivery.

    • Prioritize Tasks: Identify critical features that must be completed first. For example, focus on core functionalities before adding enhancements.

    • Agile Methodology: Use agile practices like sprints to break down the project into manageable chunks, allowing for iterative progress and adjust...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Stay curious, keep learning and tailor your resume to each role. Soft skills matter as much as technical skills.

Protocol Zone Interview FAQs

How many rounds are there in Protocol Zone Front end Developer interview?
Protocol Zone interview process usually has 3 rounds. The most common rounds in the Protocol Zone interview process are Assignment, Technical and HR.
How to prepare for Protocol Zone Front end Developer interview?
Go through your CV in detail and study all the technologies mentioned in your CV. Prepare at least two technologies or languages in depth if you are appearing for a technical interview at Protocol Zone. The most common topics and skills that interviewers at Protocol Zone expect are Front End, React.Js, Node.Js, UX and Javascript.
What are the top questions asked in Protocol Zone Front end Developer interview?

Some of the top questions asked at the Protocol Zone Front end Developer interview -

  1. what is filter method which is better to use filter method or foor l...read more
  2. What is Websocket i.o, why it is being u...read more
  3. Is it optimal to use redux for single st...read more

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Overall Interview Experience Rating

4/5

based on 1 interview experience

Difficulty level

Moderate 100%

Duration

Less than 2 weeks 100%
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Protocol Zone Front end Developer Reviews and Ratings

based on 1 review

5.0/5

Rating in categories

5.0

Skill development

3.0

Work-life balance

4.0

Salary

3.0

Job security

5.0

Company culture

4.0

Promotions

5.0

Work satisfaction

Explore 1 Review and Rating
Front End Developer

Ahmedabad

2-7 Yrs

Not Disclosed

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