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Juniper Networks Software Engineer Interview Questions and Answers
16 Interview questions
IPC mechanisms are used for inter-process communication in software development.
IPC mechanisms allow processes to communicate with each other, either on the same machine or across a network.
Common IPC mechanisms include pipes, message queues, shared memory, sockets, and signals.
Examples of IPC mechanisms include using sockets for network communication between client and server applications, or using shared memory ...
I2C and SPI are serial communication protocols used for connecting microcontrollers to peripherals.
I2C (Inter-Integrated Circuit) is a synchronous, multi-master, multi-slave, packet-switched protocol commonly used for communication between integrated circuits.
SPI (Serial Peripheral Interface) is a synchronous, full-duplex, master-slave communication protocol commonly used for communication between microcontrollers...
Find the number of subarrays whose sum is divisible by K.
Use prefix sum technique to calculate the sum of subarrays efficiently.
Keep track of the remainders of prefix sums when divided by K.
Use a hashmap to store the count of each remainder.
For each prefix sum, check how many previous prefix sums have the same remainder.
Add the count of subarrays with the same remainder to the total count.
Find elements in array that sum up to given number
Use a nested loop to iterate through each pair of elements in the array
Check if the sum of the pair equals the given number
Return the pair of elements if found, otherwise continue iterating
Binary search is an efficient algorithm for finding an item from a sorted list using recursion.
Binary search works on sorted arrays only.
It divides the search interval in half each time.
Base case: If the element is found or the interval is empty.
Example: Searching for 5 in [1, 2, 3, 4, 5, 6] returns index 4.
Implement a shopping cart system using data structures and algorithms.
Use a data structure like a hash map to store items and their quantities in the cart.
Implement functions to add, remove, and update items in the cart.
Consider implementing functions to calculate total price, apply discounts, and handle checkout process.
Program to reverse an integer
Convert the integer to a string
Reverse the string
Convert the reversed string back to an integer
The difference is that 'int arr[5]' creates an array on the stack, while 'malloc(5*sizeof(int))' allocates memory on the heap.
int arr[5] creates an array of 5 integers on the stack, which is a fixed-size memory allocation.
malloc(5*sizeof(int)) dynamically allocates memory on the heap, allowing for variable-size memory allocation.
The memory allocated with malloc must be explicitly freed with free() to avoid memory ...
Reverse a linked list without using extra memory
Iterate through the linked list and change the next pointers to reverse the list
Use three pointers - prev, current, and next - to keep track of the reversed list
Start with prev and current pointing to null and the head of the linked list respectively
While traversing the list, update the next pointer of the current node to point to the previous node
Move prev and curre...
Data structures are fundamental concepts in software engineering that organize and store data efficiently.
Arrays: Simple and efficient for storing and accessing elements.
Linked Lists: Dynamic and flexible, efficient for insertion and deletion.
Stacks: LIFO structure, useful for managing function calls and undo operations.
Queues: FIFO structure, ideal for managing tasks and scheduling.
Trees: Hierarchical structure, ...
Juniper Networks Software Engineer Interview Experiences
10 interviews found
Anonymous
Difficult online round
(2 Questions)
- Q1. Arrays from neetcode
- Ans.
Arrays are a collection of strings in programming used to store multiple values under a single variable name.
Arrays are declared using square brackets []
Each element in an array is accessed by its index, starting from 0
Example: var fruits = ['apple', 'banana', 'orange']
- Q2. Linked list from neetcode
(2 Questions)
- Q1. Trees in neet code
- Ans.
Trees in neet code refer to the implementation of tree data structures in coding challenges on the platform NeetCode.
Trees are a common data structure used in coding challenges to represent hierarchical relationships between data.
Common tree operations include traversal (inorder, preorder, postorder), insertion, deletion, and searching.
Examples of tree-related coding challenges on NeetCode include implementing a binary...
- Q2. Trees in leet code
- Ans.
Trees in leetcode are a common topic for coding interviews, involving various tree traversal and manipulation techniques.
Understand different tree traversal methods like inorder, preorder, and postorder.
Learn about common tree algorithms like finding the height, diameter, and lowest common ancestor.
Practice solving tree-related problems on leetcode to improve your skills.
Skills evaluated in this interview
Normal dsa Basics and aptitude.
(2 Questions)
- Q1. Give the elements of an array that sum up to given number.
- Q2. Binary search using recursion.
(2 Questions)
- Q1. Why should we hire you?
- Q2. Why are you interested to join juniper?
Skills evaluated in this interview
I Anusuya Devi
- Q1. What about your salary struture?
- Q2. How long Have you been working here
C,C++,Linux internals,Networking
(1 Question)
- Q1. Data Structure, Algorithm,
(1 Question)
- Q1. More on DS and Linux internals
(1 Question)
- Q1. Salary expectation and some normal questions
(1 Question)
- Q1. DSA - One problem on shopping cart
- Ans.
Implement a shopping cart system using data structures and algorithms.
Use a data structure like a hash map to store items and their quantities in the cart.
Implement functions to add, remove, and update items in the cart.
Consider implementing functions to calculate total price, apply discounts, and handle checkout process.
Skills evaluated in this interview
Pallavi Mukund Pathak
Selected
I applied via Naukri.com and was interviewed before Jul 2023. There were 6 interview rounds.
(1 Question)
- Q1. Explain which are IPC mechanism
- Ans.
IPC mechanisms are used for inter-process communication in software development.
IPC mechanisms allow processes to communicate with each other, either on the same machine or across a network.
Common IPC mechanisms include pipes, message queues, shared memory, sockets, and signals.
Examples of IPC mechanisms include using sockets for network communication between client and server applications, or using shared memory for c...
(1 Question)
- Q1. Explain the Socket communication
- Ans.
Socket communication is a method of communication between two processes on a network using sockets.
Socket communication involves a client and a server communicating over a network.
It uses TCP or UDP protocols to establish a connection.
Data is exchanged through sockets using read and write operations.
Sockets can be used for various applications like web browsing, email, and file transfer.
(1 Question)
- Q1. They asked OS fundamentals
(1 Question)
- Q1. I2c Spi protocol implementation
- Ans.
I2C and SPI are serial communication protocols used for connecting microcontrollers to peripherals.
I2C (Inter-Integrated Circuit) is a synchronous, multi-master, multi-slave, packet-switched protocol commonly used for communication between integrated circuits.
SPI (Serial Peripheral Interface) is a synchronous, full-duplex, master-slave communication protocol commonly used for communication between microcontrollers and ...
(1 Question)
- Q1. Last company experience and details
- Ans.
At my last company, I developed software solutions, collaborated with teams, and ensured high-quality code delivery.
Led a team of 5 developers in creating a web application that improved user engagement by 30%.
Implemented Agile methodologies, resulting in a 20% increase in project delivery speed.
Conducted code reviews and provided mentorship to junior developers, enhancing team skills.
Collaborated with cross-functional...
(1 Question)
- Q1. Shared memory, threading , synchronization mechanism
Interview Preparation Tips
Skills evaluated in this interview
Selected
I applied via Campus Placement and was interviewed before Jun 2023. There were 3 interview rounds.
(1 Question)
- Q1. Create your own hashmap
(1 Question)
- Q1. Subarray Sum divisible by K
- Ans.
Find the number of subarrays whose sum is divisible by K.
Use prefix sum technique to calculate the sum of subarrays efficiently.
Keep track of the remainders of prefix sums when divided by K.
Use a hashmap to store the count of each remainder.
For each prefix sum, check how many previous prefix sums have the same remainder.
Add the count of subarrays with the same remainder to the total count.
(1 Question)
- Q1. Interests and open to work from Bangalore
Skills evaluated in this interview
I appeared for an interview in Aug 2021.
Interview Questionnaire
1 Question
- Q1. First few minutes to understand what each of us is doing. Then After evaluating basics/syntax of Golang I was asked to write an efficient algorithm to implement LRU cache
Interview Preparation Tips
I applied via Campus Placement and was interviewed in Dec 2016. There were 3 interview rounds.
Interview Questionnaire
10 Questions
- Q1. Write a program to reverse a n integer
- Ans.
Program to reverse an integer
Convert the integer to a string
Reverse the string
Convert the reversed string back to an integer
- Q2. Explain me about your projects
- Ans.
I have worked on various projects including a web application for inventory management and a mobile app for task tracking.
Developed a web application using React for inventory management, allowing users to track stock levels and generate reports.
Created a mobile app using Flutter for task tracking, enabling users to create, assign, and track tasks in real-time.
Collaborated with a team of developers to integrate APIs an...
- Q3. Are you interstedoing in studying further
- Ans.
Yes, I am interested in studying further to enhance my skills and knowledge in software engineering.
Interested in pursuing a Master's degree in Computer Science
Enrolling in online courses to learn new technologies and programming languages
Attending workshops and conferences to stay updated with industry trends
- Q4. Reverse a linked list without using extra memory
- Ans.
Reverse a linked list without using extra memory
Iterate through the linked list and change the next pointers to reverse the list
Use three pointers - prev, current, and next - to keep track of the reversed list
Start with prev and current pointing to null and the head of the linked list respectively
While traversing the list, update the next pointer of the current node to point to the previous node
Move prev and current po...
- Q5. Explain me about all the data structures you know, tell me their advantages over others and applications
- Ans.
Data structures are fundamental concepts in software engineering that organize and store data efficiently.
Arrays: Simple and efficient for storing and accessing elements.
Linked Lists: Dynamic and flexible, efficient for insertion and deletion.
Stacks: LIFO structure, useful for managing function calls and undo operations.
Queues: FIFO structure, ideal for managing tasks and scheduling.
Trees: Hierarchical structure, used ...
- Q6. What is the difference between into arr [5] and malloc (5*sizeof (int))
- Ans.
The difference is that 'int arr[5]' creates an array on the stack, while 'malloc(5*sizeof(int))' allocates memory on the heap.
int arr[5] creates an array of 5 integers on the stack, which is a fixed-size memory allocation.
malloc(5*sizeof(int)) dynamically allocates memory on the heap, allowing for variable-size memory allocation.
The memory allocated with malloc must be explicitly freed with free() to avoid memory leaks...
- Q7. Tell me about yourself.
- Ans.
I am a passionate software engineer with a strong background in computer science and experience in developing innovative solutions.
Completed a Bachelor's degree in Computer Science from XYZ University
Proficient in programming languages such as Java, Python, and C++
Worked on various projects including a mobile app for tracking fitness goals
Familiar with Agile development methodologies and version control systems like Gi...
- Q8. Where do you want to see yourself in 5 years
- Ans.
In 5 years, I see myself as a senior software engineer leading a team of developers on innovative projects.
Continuing to enhance my technical skills and knowledge through ongoing learning and certifications
Taking on more leadership responsibilities and mentoring junior team members
Contributing to the development of cutting-edge software solutions for the company
Possibly pursuing opportunities for advancement within the...
- Q9. Mention two weakness es
- Ans.
I tend to overthink details and can be overly critical of my own work.
Overthinking details can lead to delays in completing tasks
Being overly critical can hinder progress and confidence
- Q10. Are you intersted in studying further
- Ans.
Yes, I am interested in studying further to enhance my skills and stay updated with the latest technologies.
I believe continuous learning is essential in the fast-paced tech industry
Further studies can help me specialize in a specific area of software engineering
Advanced degrees or certifications can open up new career opportunities
Interview Preparation Tips
Experience: Asked me few simple questions related to OS and Network security
Round: Technical Interview
Experience: Asked me few simple questions related to OS and Network security
College Name: IIT Madras
Skills evaluated in this interview
I appeared for an interview before Mar 2021.
(3 Questions)
Round duration - 40 minutes
Round difficulty - Easy
Technical round with questions based on DSA.
- Q1.
Reverse a Number Problem Statement
Create a program to reverse a given integer
N. The output should be the reversed integer.Note:
If a number has trailing zeros, their reversed version should not inclu...
- Ans.
Reverse a given integer while excluding trailing zeros.
Create a program to reverse the given integer by converting it to a string and then reversing it.
Remove any trailing zeros from the reversed string before converting it back to an integer.
Handle the constraints of the input integer being between 0 and 10^8.
Example: For input 1230, the output should be 321.
- Q2.
Reverse a Linked List Problem Statement
You are given a Singly Linked List of integers. Your task is to reverse the Linked List by changing the links between nodes.
Input:
The first line of input contai... - Ans.
Reverse a given singly linked list by changing the links between nodes.
Iterate through the linked list and reverse the links between nodes.
Use three pointers to keep track of the current, previous, and next nodes.
Update the links while traversing the list to reverse it.
Return the head of the reversed linked list.
- Q3. What is the difference in C++ between 'new int[5]' and 'malloc(5 * sizeof(int))'?
- Ans.
new int[5] is C++ specific and initializes the array with default values, while malloc(5 * sizeof(int)) is a C function and does not initialize the array.
new int[5] is C++ specific and calls constructors for each element in the array.
malloc(5 * sizeof(int)) is a C function and does not call constructors, leaving the array uninitialized.
new int[5] returns a pointer to the first element of the array, while malloc(5 * siz...
Interview Preparation Tips
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.
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.
Skills evaluated in this interview
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based on 7 interview experiences
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