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WatchGuard Technologies Full Stack Software Developer Interview Questions and Answers

Updated 24 Apr 2024

WatchGuard Technologies Full Stack Software Developer Interview Experiences

1 interview found

Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
Selected Selected
Round 1 - Aptitude Test 

Total 60 question 30 from C/C++ output and 30 from profit-loss, find age and related to ratio

Round 2 - Technical 

(5 Questions)

  • Q1. Dsa coding question, aptitude, oops, rdbms(joins and normalization)
  • Q2. Rotate materix(nxn) 90 degree
  • Ans. 

    To rotate a matrix 90 degrees, transpose the matrix and then reverse each row.

    • Transpose the matrix by swapping matrix[i][j] with matrix[j][i]

    • Reverse each row of the transposed matrix to get the final rotated matrix

  • Answered by AI
  • Q3. A pattern printing question
  • Q4. Reverse doubli-linkedlist
  • Q5. Preorder traversal without using recursion
  • Ans. 

    Iterative solution to perform preorder traversal without using recursion

    • Use a stack to keep track of nodes

    • Start by pushing the root node onto the stack

    • While the stack is not empty, pop a node, visit it, then push its right child followed by its left child onto the stack

  • Answered by AI
Round 3 - HR 

(3 Questions)

  • Q1. Introduce yourself
  • Q2. Why you chose b.tech
  • Q3. Why you chose cse

Skills evaluated in this interview

Interview questions from similar companies

I was interviewed 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...

  • Ans. 

    Design a Least Recently Used (LRU) cache data structure that supports get and put operations with capacity constraint.

    • Implement a doubly linked list to maintain the order of recently used keys.

    • Use a hashmap to store key-value pairs for quick access.

    • When capacity is reached, evict the least recently used item before inserting a new item.

    • Update the position of a key in the linked list whenever it is accessed or updated.

    • H...

  • Answered by AI
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...

  • Ans. 

    Detect and remove loop in a singly linked list in place with O(n) time complexity and O(1) space complexity.

    • Use Floyd's Cycle Detection Algorithm to identify the loop in the linked list.

    • Once the loop is detected, use two pointers to find the start of the loop.

    • Adjust the pointers to remove the loop and return the modified linked list.

  • Answered by AI
  • Q2. What is the difference between ArrayList and LinkedList in Java?
  • Ans. 

    ArrayList is implemented using a dynamic array while LinkedList is implemented using a doubly linked list.

    • ArrayList provides fast random access but slow insertion and deletion operations.

    • LinkedList provides fast insertion and deletion operations but slow random access.

    • Example: ArrayList is suitable for scenarios where frequent access and traversal of elements is required, while LinkedList is suitable for scenarios wher...

  • Answered by AI
  • 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?
  • Ans. 

    Piping in Unix/Linux allows the output of one command to be used as the input for another command.

    • Piping is done using the | symbol

    • Multiple commands can be piped together

    • Piping allows for the creation of complex command chains

    • Example: ls -l | grep txt

  • Answered by AI
  • Q2. What is a static variable in C?
  • Ans. 

    A static variable in C is a variable that retains its value between function calls.

    • Static variables are declared using the 'static' keyword.

    • They are initialized only once and retain their value throughout the program's execution.

    • Static variables have a default value of 0 if not explicitly initialized.

    • They are stored in the data segment of the program's memory.

    • Example: static int count = 0; declares a static variable 'c

  • Answered by AI
  • 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

I was interviewed before Nov 2020.

Round 1 - Coding Test 

(1 Question)

Round duration - 60 minutes
Round difficulty - Medium

The test was in the evening which was not too late. It was conducted on Hackerrank which is a very common platform and was hence familiar. There were 26 questions:
Q1: Coding Question
3 languages were allowed: c, java8, python3
Q2 - Q26: Multiple Choice Questions

  • Q1. 

    Intersection of Linked List Problem

    You are provided with two singly linked lists containing integers, where both lists converge at some node belonging to a third linked list.

    Your task is to determine t...

  • Ans. 

    Find the node where two linked lists merge, return -1 if no merging occurs.

    • Traverse both lists to find the lengths and the last nodes

    • Align the starting points of both lists by moving the longer list's pointer ahead by the difference in lengths

    • Traverse both lists simultaneously until a common node is found, which is the merging point

  • Answered by AI

Interview Preparation Tips

Professional and academic backgroundI applied for the job as SDE - 1 in BangaloreEligibility criteriaDegree & Specialisation : B.Tech (Computer Science) B.Tech (Information Technology) B.Tech (Electronics & Communication) B.Tech (Electrical & Electronics) MCA M.Sc (Computer Science), Year of Graduation : 2021, CGPA : 7.5 and above, No Current BacklogsCisco interview preparation:Topics to prepare for the interview - Data Communication and Networks, Data Structures, SQL, OOPS, C, C++, JavaTime required to prepare for the interview - 2 MonthsInterview preparation tips for other job seekers

Tip 1 : Practice competitive programming as much as possible. It's never too late. Start now. But it is important to practice before appearing for the paper.
Tip 2 : Try to start making projects early on as it plays a major role during the interviews. 
Tip 3 : Be involved in extra curricular activities and events like Hackathons even if you don't win all of them. It gives a lot of exposure and experience.
Tip 4 : Don't lose touch with your core subjects.
Tip 5 : An internship/training from a good organization always helps (though don't lose hope if you don't have it).
Tip 6 : Focus on your communication skills along with your core subjects as it helps in giving a good impression during the interviews.

Application resume tips for other job seekers

Tip 1 : Maintain a good CGPA (above 7.5)
Tip 2 : Mention your projects as they are noticed in the interview
Tip 3 : Having an internship experience especially from a good organization helps
Tip 4 : Focus on extra curricular activities too
Tip 5 : Do not put things you are not sure about

Final outcome of the interviewRejected

Skills evaluated in this interview

Intern Interview Questions & Answers

FireEye user image Siriguppa Aditya

posted on 15 May 2017

I was interviewed before May 2016.

Interview Preparation Tips

Round: Test
Experience: Test had all kinds of questions apti+c-apti+cse concepts+coding.
It covered all the things related to computer science.There were 3 coding questions among 39
Duration: 1 hour
Total Questions: 39

Round: Technical Interview
Experience: Resume Related

Round: Technical Interview
Experience: Resume related and tested my knowledge on networking

Interview experience
1
Bad
Difficulty level
Hard
Process Duration
2-4 weeks
Result
Not Selected

I applied via Company Website and was interviewed in May 2024. There was 1 interview round.

Round 1 - Assignment 

The task was a Codility type

Interview experience
5
Excellent
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Technical 

(1 Question)

  • Q1. Data structures, Algorithm
Interview experience
4
Good
Difficulty level
-
Process Duration
-
Result
-
Round 1 - Learning 

(1 Question)

  • Q1. There are lot of questions regarding networking

Interview Preparation Tips

Interview preparation tips for other job seekers - It is a virtual internship offered by the Eduskills platform.
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
Less than 2 weeks
Result
Not Selected

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

Round 1 - Aptitude Test 

Basic question asked

Round 2 - One-on-one 

(4 Questions)

  • Q1. Computer networking based question
  • Q2. Dsa question based on graph and dp
  • Q3. Based on operating system
  • Q4. Function of oops
  • Ans. 

    Object-oriented programming paradigm that focuses on objects and classes for code organization and reusability.

    • Encapsulation: bundling data and methods that operate on the data into a single unit (object)

    • Inheritance: ability of a class to inherit properties and behavior from another class

    • Polymorphism: ability to present the same interface for different data types

  • Answered by AI
Round 3 - HR 

(1 Question)

  • Q1. Behavior question asked

Interview Preparation Tips

Interview preparation tips for other job seekers - prepare well practice on dsa question
Round 1 - Coding Test 

It was 90 mins test with 2 coding questions and aptitude questions most of them on networking

Round 2 - Technical 

(2 Questions)

  • Q1. Longest subarray with sum 0
  • Ans. 

    Find the longest subarray with sum 0 in an array of integers.

    • Use a hash table to store the sum and its index.

    • Iterate through the array and calculate the cumulative sum.

    • If the cumulative sum is already in the hash table, then the subarray between the current index and the index in the hash table has a sum of 0.

    • Keep track of the longest subarray with sum 0 seen so far.

    • Return the length of the longest subarray with sum 0.

  • Answered by AI
  • Q2. Is a given binary is a binary search tree

Interview Preparation Tips

Interview preparation tips for other job seekers - see networking more they will ask more on core cocepts

Skills evaluated in this interview

I was interviewed in Aug 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. 

    Intersection of Linked List Problem

    You are provided with two singly linked lists containing integers, where both lists converge at some node belonging to a third linked list.

    Your task is to determine t...

  • Ans. 

    Find the node where two linked lists merge, return -1 if no merging occurs.

    • Traverse both lists to find their lengths and the difference in lengths

    • Move the pointer of the longer list by the difference in lengths

    • Traverse both lists simultaneously until they meet at the merging point

  • Answered by AI
Round 2 - Video Call 

(4 Questions)

Round duration - 60 Minutes
Round difficulty - Medium

The interviewer asked 1 coding problem related to Sliding Window in this round and then the rest of the questions were preety much revolving around Computer Networks and OOPS.

  • Q1. 

    Longest Substring Without Repeating Characters Problem Statement

    Given a string S of length L, determine the length of the longest substring that contains no repeating characters.

    Example:

    Input:
    "abac...
  • Ans. 

    Find the length of the longest substring without repeating characters in a given string.

    • Use a sliding window approach to keep track of the longest substring without repeating characters.

    • Use a hashmap to store the index of each character as it appears in the string.

    • Update the start index of the window when a repeating character is found.

    • Calculate the maximum length of the window as you iterate through the string.

    • Return

  • Answered by AI
  • Q2. Can you explain what DNS is?
  • Ans. 

    DNS stands for Domain Name System, which translates domain names to IP addresses.

    • DNS is like a phone book for the internet, translating human-readable domain names (like google.com) to IP addresses (like 172.217.3.206).

    • It helps users access websites by typing in easy-to-remember domain names instead of complex IP addresses.

    • DNS servers store records of domain names and their corresponding IP addresses, allowing for effi...

  • Answered by AI
  • Q3. Explain why MAC addresses are necessary even though we have IP addresses.
  • Ans. 

    MAC addresses are necessary for local network communication and are used to uniquely identify devices on a network.

    • MAC addresses are used at the data link layer of the OSI model to identify devices within the same local network.

    • IP addresses are used at the network layer to identify devices across different networks.

    • MAC addresses are hardcoded into network interface cards (NICs) and are used for communication within the...

  • Answered by AI
  • Q4. How does C++ support polymorphism?
  • Ans. 

    C++ supports polymorphism through virtual functions and inheritance.

    • C++ supports polymorphism through virtual functions and inheritance

    • Virtual functions allow a function to be overridden in a derived class

    • Base class pointers can point to derived class objects, enabling polymorphic behavior

    • Example: class Animal { virtual void makeSound() { cout << 'Animal sound'; } }; class Dog : public Animal { void makeSound() {...

  • Answered by AI
Round 3 - Video Call 

(3 Questions)

Round duration - 60 minutes
Round difficulty - Medium

This round had questions revolving around Computer Networks and Operating Systems.

Tip : Concepts related to Computer Networks is quite frequently asked in Cisco interviews . So its better to remain equipped with all the fundamental concepts. I prepared all the core subjects from my notes and for revision I would suggest the guided paths of Coding Ninjas , they are very useful for quick revision and also the questions over there are very frequently asked in interviews.

  • Q1. What is the ARP protocol?
  • Ans. 

    ARP stands for Address Resolution Protocol, used to map IP addresses to MAC addresses in a local network.

    • ARP is used to find the MAC address of a device based on its IP address

    • It operates at the data link layer of the OSI model

    • ARP requests are broadcasted to all devices on the local network

    • Example: When a device wants to communicate with another device on the same network, it uses ARP to find the MAC address of the des

  • Answered by AI
  • Q2. What are the different types of semaphores?
  • Ans. 

    Different types of semaphores include binary semaphores, counting semaphores, and mutex semaphores.

    • Binary semaphores: Can only have two states - 0 or 1. Used for mutual exclusion.

    • Counting semaphores: Can have multiple states. Used for synchronization among multiple processes.

    • Mutex semaphores: Similar to binary semaphores but with additional features like priority inheritance and deletion safety.

  • Answered by AI
  • Q3. What is thrashing in operating systems?
  • Ans. 

    Thrashing in operating systems is a situation where the system is spending more time swapping data between memory and disk than actually executing tasks.

    • Occurs when the system is overwhelmed with too many processes competing for limited resources

    • Results in a decrease in overall system performance

    • Can be alleviated by optimizing memory usage or adding more physical memory

    • Example: A system with insufficient RAM running mu

  • Answered by AI

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

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WatchGuard Technologies Interview FAQs

How many rounds are there in WatchGuard Technologies Full Stack Software Developer interview?
WatchGuard Technologies interview process usually has 3 rounds. The most common rounds in the WatchGuard Technologies interview process are Aptitude Test, Technical and HR.
What are the top questions asked in WatchGuard Technologies Full Stack Software Developer interview?

Some of the top questions asked at the WatchGuard Technologies Full Stack Software Developer interview -

  1. preorder traversal without using recurs...read more
  2. rotate materix(nxn) 90 deg...read more
  3. dsa coding question, aptitude, oops, rdbms(joins and normalizati...read more

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WatchGuard Technologies Full Stack Software Developer Interview Process

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Interview experience

5
  
Excellent
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WatchGuard Technologies Full Stack Software Developer Salary
based on 4 salaries
₹9.3 L/yr - ₹9.4 L/yr
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