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Juniper Networks Java Developer Interview Questions and Answers

Updated 4 May 2023

Juniper Networks Java Developer Interview Experiences

1 interview found

Interview experience
5
Excellent
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

I applied via Company Website and was interviewed in Apr 2023. There were 3 interview rounds.

Round 1 - Resume Shortlist 
Pro Tip by AmbitionBox:
Keep your resume crisp and to the point. A recruiter looks at your resume for an average of 6 seconds, make sure to leave the best impression.
View all tips
Round 2 - Aptitude Test 

Aptitude test is the round of i step to enter the compition

Round 3 - Technical 

(4 Questions)

  • Q1. What is method overloading and method overriding
  • Ans. 

    Method overloading is creating multiple methods with the same name but different parameters. Method overriding is creating a new implementation of an existing method in a subclass.

    • Method overloading is used to provide different ways of calling the same method with different parameters.

    • Method overriding is used to change the behavior of an existing method in a subclass.

    • Method overloading is resolved at compile-time base...

  • Answered by AI
  • Q2. What is polymorphism
  • Q3. Can we overload the constructer
  • Q4. What is data type

Interview Preparation Tips

Topics to prepare for Juniper Networks Java Developer interview:
  • Java devloper

Top trending discussions

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Interview Tips & Stories
1w (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 Juniper Networks?
Ask anonymously on communities.

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I appeared for an interview before Jan 2016.

Interview Questionnaire 

7 Questions

  • Q1. Give a brief description about your education, past job profile and other questions.
  • Q2. Why did you quit your last organization after just 2.5 years?
  • Q3. Why do you want to join Centurylink?
  • Ans. 

    I am excited to join Centurylink because of their reputation for innovation and commitment to customer satisfaction.

    • Centurylink has a strong focus on developing cutting-edge technology solutions

    • The company values customer feedback and strives to provide excellent service

    • I am impressed by Centurylink's dedication to diversity and inclusion in the workplace

  • Answered by AI
  • Q4. Why did you relocate to Noida?
  • Ans. 

    Relocated to Noida for better career opportunities and growth.

    • Noida is a hub for IT companies and offers a lot of job opportunities in the software development field.

    • The city has a good work-life balance and a lower cost of living compared to other metropolitan cities.

    • I was also attracted to the diverse culture and the opportunity to work with people from different backgrounds.

    • I did my research and found that Noida has...

  • Answered by AI
  • Q5. Are you ok to work in US shift?
  • Ans. 

    Yes, I am comfortable working in US shift.

    • I have prior experience working in US shift.

    • I am flexible with my work timings.

    • I understand the importance of meeting project deadlines.

    • I am willing to adjust my personal schedule to accommodate work requirements.

  • Answered by AI
  • Q6. Where do you put up?
  • Q7. Solve 12 Mainframe Puzzles

Interview Preparation Tips

Round: Technical + HR Interview
Experience: I told them all about the previous companies and my past job profile as a Mainframe Developer.
I gave a valid reason for quitting the previous company.
I cited that the reason to relocate to Noida was my wedding.
I was not okay to work in shifts, hence I denied.
I was putting up in Noida itself back then.

Round: Puzzle Interview
Experience: I was given a list of 12 Mainframe puzzles with questions from Cobol, DB2 and JCL.

I could solve 8 of them correctly.
Tips: Prepare puzzles as they give just 1 minute per question and not more.

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I appeared for an interview before Apr 2021.

Round 1 - Face to Face 

(7 Questions)

Round duration - 60 minutes
Round difficulty - Easy

Technical Interview round with questions on OOPS and OS mainly.

  • Q1. What are Little Endian and Big Endian in the context of computer architecture?
  • Ans. 

    Little Endian and Big Endian refer to the order in which bytes are stored in computer memory.

    • Little Endian stores the least significant byte first, while Big Endian stores the most significant byte first.

    • Little Endian is commonly used in x86 architecture, while Big Endian is used in architectures like SPARC and PowerPC.

    • Endianness can affect data transmission between systems with different byte orders.

  • Answered by AI
  • Q2. Write a program to determine if your system is little-endian or big-endian.
  • Q3. What is the volatile keyword in programming?
  • Ans. 

    The volatile keyword in programming is used to indicate that a variable's value can be changed unexpectedly.

    • Volatile keyword is used in multithreaded programming to prevent compiler optimizations on variables that can be changed by other threads.

    • It tells the compiler not to cache the variable's value in a register, ensuring that every access is made to the variable's memory location.

    • Commonly used in embedded systems pr...

  • Answered by AI
  • Q4. What is the use of a function pointer in C?
  • Q5. Design a data structure to implement multi-threading.
  • Q6. What does a kernel do?
  • Ans. 

    The kernel is the core component of an operating system that manages system resources and provides a bridge between software and hardware.

    • Manages system resources such as CPU, memory, and I/O devices

    • Provides a bridge between software applications and hardware components

    • Handles tasks such as process scheduling, memory management, and device drivers

    • Controls communication between hardware and software layers

  • Answered by AI
  • Q7. What is a storage class in programming?
Round 2 - HR 

Round duration - 30 minutes
Round difficulty - Easy

HR round with typical behavioral problems.

Interview Preparation Tips

Eligibility criteriaAbove 7 CGPANVIDIA interview preparation:Topics to prepare for the interview - Data Structures, Algorithms, Operating Systems, Aptitude, OOPSTime required to prepare for the interview - 6 monthsInterview preparation tips for other job seekers

Tip 1 : Must do Previously asked Interview as well as Online Test Questions.
Tip 2 : Go through all the previous interview experiences from Codestudio and Leetcode.
Tip 3 : Do at-least 2 good projects and you must know every bit of them.

Application resume tips for other job seekers

Tip 1 : Have at-least 2 good projects explained in short with all important points covered.
Tip 2 : Every skill must be mentioned.
Tip 3 : Focus on skills, projects and experiences more.

Final outcome of the interviewSelected

Skills evaluated in this interview

Interview Preparation Tips

General Tips: It was challenging for me to get into this company. I was rejected around 10-11 times before i got placed in this company. So finding out the reason and to overcome it in the next company was the challenging task.
For getting into this company you should have the knowledge of OS, Database,Networks and OOP concepts. "Job profile was software developer.
The questions asked to me were related to OS concepts like deadlocks process and threads n all. From networks they asked me about the wifi drivers installed in your system. They asked about dynamic programming and they gave me one question to solve using dynamic programming. Then they asked me to write two more codes . From database they asked me about the errors which we will get if we do these things in the table. They asked me about the hashmap and how does it work and why it takes constant time in data retrieval. They asked me about the OOPs concepts and the virtual class implementation in detail. In short they asked me questions from every field."
Skill Tips: For the interviews karumanchi is the best book.
Presentation skills matters alot. No matter how much u know, presenating your knowledge in front of the interviewer matters alot. Speaking very fast during an interview may lead you to rejections (personal experience).
Skills:
College Name: NIT Surathkal

I applied via Naukri.com and was interviewed before Dec 2020. There were 3 interview rounds.

Interview Questionnaire 

3 Questions

  • Q1. What is OOPs concept?
  • Q2. What is lazy loading?
  • Q3. What is eager loading?
  • Ans. 

    Eager loading is a technique used in software development to load related data in advance to avoid multiple database queries.

    • Eager loading is used to optimize database queries and improve performance.

    • It loads all the required data in a single query instead of making multiple queries.

    • It is commonly used in Object-Relational Mapping (ORM) frameworks like Hibernate, Entity Framework, etc.

    • Eager loading can be used with var...

  • Answered by AI

Interview Preparation Tips

Interview preparation tips for other job seekers - Clearing Test is the key

Skills evaluated in this interview

I appeared for an interview before Jan 2021.

Round 1 - Coding Test 

(1 Question)

Round duration - 70 Minutes
Round difficulty - Medium

This was an Online Coding+MCQ round where we had a total of 50 MCQ questions and 1 coding problem. The coding problem was of easy to medium level but was a bit implementation heavy.

  • Q1. 

    LRU Cache Design Question

    Design a data structure for a Least Recently Used (LRU) cache that supports the following operations:

    1. get(key) - Return the value of the key if it exists in the cache; otherw...

Round 2 - Face to Face 

(3 Questions)

Round duration - 60 Minutes
Round difficulty - Medium

This round had 1 coding question in which I was first required to explain my approach and then discuss the time and space complexities. After this , some basic questions from OOPS and Java were asked.

  • Q1. 

    Detect and Remove Loop in Linked List

    For a given singly linked list, identify if a loop exists and remove it, adjusting the linked list in place. Return the modified linked list.

    Expected Complexity:

    A...

  • Q2. What is the difference between ArrayList and LinkedList in Java?
  • Q3. What is the difference between abstraction and inheritance?
  • Ans. 

    Abstraction focuses on hiding implementation details, while inheritance allows a class to inherit properties and behavior from another class.

    • Abstraction is the concept of hiding the complex implementation details and showing only the necessary features of an object.

    • Inheritance is a mechanism where a new class inherits properties and behavior from an existing class.

    • Abstraction is achieved through interfaces and abstract...

  • Answered by AI
Round 3 - Face to Face 

(3 Questions)

Round duration - 60 Minutes
Round difficulty - Medium

This round had questions from OS and OOPS. The interviewer also tested my problem solving skills by asking me some puzzles in the end.

  • Q1. Can you explain piping in Unix/Linux?
  • Q2. What is a static variable in C?
  • Q3. How can you measure exactly 4 liters of water using only a 3-liter can and a 5-liter can?

Interview Preparation Tips

Eligibility criteriaAbove 7 CGPACisco interview preparation:Topics to prepare for the interview - Data Structures, Algorithms, System Design, Aptitude, OOPSTime required to prepare for the interview - 4 MonthsInterview preparation tips for other job seekers

Tip 1 : Must do Previously asked Interview as well as Online Test Questions.
Tip 2 : Go through all the previous interview experiences from Codestudio and Leetcode.
Tip 3 : Do at-least 2 good projects and you must know every bit of them.

Application resume tips for other job seekers

Tip 1 : Have at-least 2 good projects explained in short with all important points covered.
Tip 2 : Every skill must be mentioned.
Tip 3 : Focus on skills, projects and experiences more.

Final outcome of the interviewSelected

Skills evaluated in this interview

Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-

I applied via Approached by Company and was interviewed before Apr 2023. There were 3 interview rounds.

Round 1 - Coding Test 

Questions regarding JS concepts. JS and React specific rounds, closures, Promises, etc

Round 2 - Technical 

(1 Question)

  • Q1. Solve a js problem to traverse a directory. Simple question
  • Ans. 

    Traverse a directory in JavaScript using Node.js to list files and subdirectories.

    • Use the 'fs' module to interact with the file system: const fs = require('fs');

    • Use 'fs.readdir' to read the contents of a directory: fs.readdir(path, callback);

    • Recursively call the function for subdirectories to traverse deeply.

    • Example: function traverseDir(dir) { fs.readdir(dir, (err, files) => { ... }); }

  • Answered by AI
Round 3 - One-on-one 

(1 Question)

  • Q1. Managerial round to understand roles and responsibilities in previous orgs.
Are these interview questions helpful?

I applied via Naukri.com and was interviewed in Jul 2021. There were 3 interview rounds.

Interview Questionnaire 

4 Questions

  • Q1. Make your own arraylist. OOPS . Multithreading . Oracle. JSP Servlets. AWT , GWT , Swing . Hashmap vs HashTable . Spring Bean Scopes. Make a 6X6 Tic Toe Game .
  • Q2. Are you willing to work 24x7
  • Ans. 

    No

    • I believe in maintaining a healthy work-life balance

    • Working 24x7 can lead to burnout and decreased productivity

    • It is important to have designated work hours and time for rest and personal activities

  • Answered by AI
  • Q3. Are you okay to work on Legacy Technologies
  • Ans. 

    Yes, I am okay to work on Legacy Technologies.

    • I have experience working with legacy technologies and understand the challenges they may present.

    • I am adaptable and willing to learn new technologies if required.

    • I believe in the importance of maintaining and supporting legacy systems to ensure business continuity.

    • I can provide examples of successfully working with legacy technologies in my previous projects.

  • Answered by AI
  • Q4. HR Round - Why do you want to join Lumen? etc

Interview Preparation Tips

Interview preparation tips for other job seekers - Easy interview. Prepare JSP Servlets Properly. Mostly Hiring for that. They might ask Spring , Angular but you won't get to work on that . They will ask to work on testing if you know Java. Testing like Selenium and all.
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Selected Selected

I applied via Naukri.com and was interviewed in Dec 2023. There were 4 interview rounds.

Round 1 - Technical 

(1 Question)

  • Q1. Find a duplicate in a String OOPs concept Java 8 features
  • Ans. 

    The question is about finding a duplicate in a string.

    • Convert the string into an array of characters

    • Create a HashSet to store unique characters

    • Iterate through the array and check if each character is already present in the HashSet

    • If a character is already present, it is a duplicate

  • Answered by AI
Round 2 - Technical 

(1 Question)

  • Q1. Java OOPs concept Comparator vs Comparable Streams Lambda Expression
  • Ans. 

    Comparator vs Comparable, Streams, Lambda Expression

    • Comparator and Comparable are interfaces used for sorting objects in Java

    • Comparator is used for custom sorting logic, while Comparable is used for natural sorting order

    • Streams are a sequence of elements that can be processed in parallel or sequentially

    • Lambda expressions are used to write concise and functional code in Java

  • Answered by AI
Round 3 - Technical 

(1 Question)

  • Q1. System Desing of Network Management System
  • Ans. 

    A network management system is designed to monitor and control network devices and ensure their efficient operation.

    • The system should have a centralized dashboard to display real-time network status and performance metrics.

    • It should support automated network discovery and device configuration management.

    • The system should provide alerts and notifications for network events and failures.

    • It should have the ability to gene...

  • Answered by AI
Round 4 - HR 

(1 Question)

  • Q1. Background why Tejas Salary Discussion

Skills evaluated in this interview

Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

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

  • Q1. Fully on threads and Array programs
  • Q2. Collections and java 8

Interview Preparation Tips

Interview preparation tips for other job seekers - Work on Threads, Arrays, String and collections

Juniper Networks Interview FAQs

How many rounds are there in Juniper Networks Java Developer interview?
Juniper Networks interview process usually has 3 rounds. The most common rounds in the Juniper Networks interview process are Resume Shortlist, Aptitude Test and Technical.
How to prepare for Juniper Networks Java 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 Juniper Networks. The most common topics and skills that interviewers at Juniper Networks expect are J2Ee and Java.
What are the top questions asked in Juniper Networks Java Developer interview?

Some of the top questions asked at the Juniper Networks Java Developer interview -

  1. What is method overloading and method overrid...read more
  2. Can we overload the construc...read more
  3. What is data t...read more

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