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WatchGuard Technologies Software Developer Interview Questions, Process, and Tips

Updated 15 Mar 2024

Top WatchGuard Technologies Software Developer Interview Questions and Answers

  • Q1. Distinct Elements in K-Sized Windows The task is to determine the number of distinct elements in every sliding window of size 'K' across an array 'ARR' of size 'N'. A 'K ...read more
  • Q2. Reverse the String Problem Statement You are given a string STR which contains alphabets, numbers, and special characters. Your task is to reverse the string. Example: I ...read more
  • Q3. Move Zeros to Left Problem Statement Your task is to rearrange a given array ARR such that all zero elements appear at the beginning, followed by non-zero elements, whil ...read more
View all 6 questions

WatchGuard Technologies Software Developer Interview Experiences

3 interviews found

Interview experience
5
Excellent
Difficulty level
Hard
Process Duration
4-6 weeks
Result
No response

I applied via Job Fair and was interviewed before Mar 2023. There were 3 interview rounds.

Round 1 - Coding Test 

2 data struture question advancevds i cpp

Round 2 - Technical 

(2 Questions)

  • Q1. 5 dsa array string
  • Ans. 

    Implement a data structure for storing and manipulating an array of strings.

    • Use a dynamic array to store the strings.

    • Implement functions for adding, removing, and accessing strings in the array.

    • Consider memory management and resizing the array as needed.

  • Answered by AI
  • Q2. Data sturucture
Round 3 - HR 

(1 Question)

  • Q1. Resume based question

Interview Preparation Tips

Interview preparation tips for other job seekers - good

Skills evaluated in this interview

I was interviewed in Apr 2021.

Round 1 - Video Call 

(3 Questions)

Round duration - 45 minutes
Round difficulty - Medium

Timing was 12 PM. Interviewer was nice.

  • Q1. 

    Reverse the String Problem Statement

    You are given a string STR which contains alphabets, numbers, and special characters. Your task is to reverse the string.

    Example:

    Input:
    STR = "abcde"
    Output:
    "e...
  • Ans. 

    Reverse a given string containing alphabets, numbers, and special characters.

    • Iterate through the string from end to start and append each character to a new string.

    • Alternatively, use built-in functions like reverse() or slicing to reverse the string.

    • Handle special characters and numbers while reversing the string.

    • Ensure to consider the constraints on the length of the string and number of test cases.

  • Answered by AI
  • Q2. 

    Move Zeros to Left Problem Statement

    Your task is to rearrange a given array ARR such that all zero elements appear at the beginning, followed by non-zero elements, while maintaining the relative order of...

  • Ans. 

    Rearrange an array such that all zero elements appear at the beginning, followed by non-zero elements, maintaining relative order of non-zero elements.

    • Iterate through the array and maintain two pointers - one for the next position to place a zero and one for the next non-zero element.

    • Swap the elements at these pointers until all zeros are moved to the left and non-zero elements are in their relative order.

    • Time complexi...

  • Answered by AI
  • Q3. Write an SQL query to find the second highest salary from a table.
  • Ans. 

    SQL query to find the second highest salary from a table

    • Use the MAX() function to find the highest salary

    • Use the NOT IN operator to exclude the highest salary from the results

    • Order the salaries in descending order and limit the result to 1

  • Answered by AI

Interview Preparation Tips

Professional and academic backgroundI completed Computer Science Engineering from Chitkara University. I applied for the job as SDE - 1 in NoidaEligibility criteriaAbove 8 CGPAWatchGuard Technologies interview preparation:Topics to prepare for the interview - Data Structures, Pointers, OOPS, System Design, Algorithms, Dynamic ProgrammingTime required to prepare for the interview - 2 monthsInterview preparation tips for other job seekers

Tip 1 : Do some projects.
Tip 2 : Practice problem solving questions.
 

Application resume tips for other job seekers

Tip 1 : Keep it short.
Tip 2 : Do not put false things on resume.

Final outcome of the interviewRejected

Skills evaluated in this interview

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I was interviewed in Jan 2021.

Round 1 - Coding Test 

(1 Question)

Round duration - 60 Minutes
Round difficulty - Medium

Online test

  • Q1. MCQ Questions

    Based on c++,c and java basics

  • Ans. 

    MCQ questions based on C++, C, and Java basics.

    • Understand the differences between C++, C, and Java syntax and features.

    • Be familiar with basic concepts like data types, control structures, and functions.

    • Practice solving MCQs to improve your understanding of the languages.

  • Answered by AI
Round 2 - Video Call 

(2 Questions)

Round duration - 150 Minutes
Round difficulty - Medium

Technical interview

  • Q1. 

    Distinct Elements in K-Sized Windows

    The task is to determine the number of distinct elements in every sliding window of size 'K' across an array 'ARR' of size 'N'. A 'K' sized window is a contiguous sequ...

  • Ans. 

    Calculate the count of distinct elements in each sliding window of size 'K' across an array 'ARR'.

    • Use a sliding window approach to iterate through the array and keep track of distinct elements using a hashmap or set.

    • Update the count of distinct elements in each window as it slides across the array.

    • Return the array detailing the count of distinct elements in each 'K' sized window for each test case.

  • Answered by AI
  • Q2. 

    MergeSort Linked List Problem Statement

    You are given a Singly Linked List of integers. Your task is to sort the list using the 'Merge Sort' algorithm.

    Input:

    The input consists of a single line contain...
  • Ans. 

    Sort a Singly Linked List using Merge Sort algorithm.

    • Implement the Merge Sort algorithm for linked lists.

    • Divide the list into two halves, sort each half recursively, and then merge them.

    • Use a fast and slow pointer to find the middle of the list for splitting.

    • Handle the base cases of empty list or single node list.

    • Example: Input: 4 3 2 1 -1, Output: 1 2 3 4

  • Answered by AI
Round 3 - Coding Test 

Round duration - 20 minutes
Round difficulty - Hard

Hr interview

Interview Preparation Tips

Professional and academic backgroundI applied for the job as SDE - 1 in NoidaEligibility criteria80% and above in 10th,12th and ugWatchGuard Technologies interview preparation:Topics to prepare for the interview - Stack Implementation, DBMS, SQL QUERIES, Data structure and ADATime required to prepare for the interview - 1 monthInterview preparation tips for other job seekers

Tip 1 : Go through oosp concept properly
Tip 2 : Good knowledge on coding
Tip 3 : intermediate knowledge on database and data structures

Application resume tips for other job seekers

Tip 1 : A project based on database
Tip 2 : Mention all the fields properly and have a prior knowledge on your project

Final outcome of the interviewRejected

Skills evaluated in this interview

Interview questions from similar companies

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
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
Interview experience
4
Good
Difficulty level
Moderate
Process Duration
2-4 weeks
Result
-

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

Round 1 - Coding Test 

Data Structures and Algorithms

Round 2 - One-on-one 

(1 Question)

  • Q1. SQL data manipulation queries

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

I was interviewed before Jan 2021.

Round 1 - Coding Test 

(1 Question)

Round duration - 60 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.

  • Q1. 

    Add Two Numbers Represented as Linked Lists

    Given two linked lists representing two non-negative integers, where the digits are stored in reverse order (i.e., starting from the least significant digit to ...

  • Ans. 

    Add two numbers represented as linked lists in reverse order and return the sum as a linked list.

    • Traverse both linked lists simultaneously while keeping track of carry.

    • Create a new linked list to store the sum digits.

    • Handle cases where one list is longer than the other or there is a final carry.

    • Remember to reverse the final linked list before returning the head.

  • Answered by AI
Round 2 - Video Call 

(4 Questions)

Round duration - 60 Minutes
Round difficulty - Medium

This round had 1 question related to Binary Tree Traversal and then the rest of the questions that the interviewer asked me were mostly related to OOPS and C++.

  • Q1. 

    Level Order Traversal Problem Statement

    Given a binary tree of integers, return the level order traversal of the binary tree.

    Input:

    The first line contains an integer 'T', representing the number of te...
  • Ans. 

    Return the level order traversal of a binary tree given in level order with null nodes represented by -1.

    • Create a queue to store nodes for level order traversal

    • Start with the root node, enqueue it, then dequeue and print its value, enqueue its children, repeat until queue is empty

    • Handle null nodes represented by -1 by skipping them during traversal

  • Answered by AI
  • Q2. What is a namespace in C++?
  • Ans. 

    A namespace in C++ is a declarative region that provides a scope for the identifiers within it.

    • Namespaces help in organizing code by grouping related classes, functions, and variables.

    • They prevent naming conflicts by allowing the same name to be used in different namespaces.

    • Example: namespace myNamespace { int x; }

    • Example: using namespace std; // for using standard library functions without prefix

  • Answered by AI
  • Q3. Why do we need the Friend class and function in Object-Oriented Programming?
  • Ans. 

    Friend class and function in OOP allows specific classes or functions to access private and protected members of a class.

    • Friend class/function can access private and protected members of a class without violating encapsulation.

    • It allows for selective sharing of data between classes without exposing all members to the outside world.

    • Friendship is not mutual - a class can declare another class as a friend, but the other c...

  • Answered by AI
  • Q4. What does a static member in C++ mean?
  • Ans. 

    A static member in C++ is a member of a class that is shared among all instances of the class.

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

    • They are not associated with any specific instance of the class, but rather with the class itself.

    • They can be accessed using the scope resolution operator '::'.

    • Static members are commonly used for constants, utility functions, or shared data among all instances of a class.

  • Answered by AI
Round 3 - Video Call 

(4 Questions)

Round duration - 60 minutes
Round difficulty - Medium

This round was more aligned towards Computer Networks and had 1 question of DSA realted to Binary Trees and the interview ended with the famous Die-Hard Puzzle.

  • Q1. 

    Spiral Order Traversal of a Binary Tree

    Given a binary tree with N nodes, your task is to output the Spiral Order traversal of the binary tree.

    Input:

    The input consists of a single line containing elem...
  • Ans. 

    Implement a function to return the spiral order traversal of a binary tree.

    • Traverse the binary tree level by level, alternating the direction of traversal from left to right and right to left.

    • Use a queue to keep track of nodes at each level and a stack to reverse the order of nodes at even levels.

    • Handle null nodes appropriately to maintain the spiral order traversal.

    • Example: For input 1 2 3 -1 -1 4 5, the output should

  • Answered by AI
  • Q2. Can you describe the OSI Reference Model?
  • Ans. 

    The OSI Reference Model is a conceptual framework that standardizes the functions of a telecommunication or computing system into seven layers.

    • The OSI Reference Model stands for Open Systems Interconnection Reference Model.

    • It consists of seven layers: Physical, Data Link, Network, Transport, Session, Presentation, and Application.

    • Each layer has specific functions and communicates with the adjacent layers.

    • The model help...

  • Answered by AI
  • Q3. What is the use of a router and how does it differ from a gateway?
  • Ans. 

    A router is a networking device that forwards data packets between computer networks. It differs from a gateway in terms of functionality and scope.

    • A router operates at the network layer of the OSI model, making decisions based on IP addresses.

    • Routers connect multiple networks together and determine the best path for data to travel.

    • Gateways, on the other hand, translate between different types of networks or protocols.

    • ...

  • Answered by AI
  • Q4. 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

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

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WatchGuard Technologies Interview FAQs

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

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

  1. 5 dsa array str...read more
  2. resume based quest...read more
  3. data sturuct...read more

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WatchGuard Technologies Software Developer Interview Process

based on 1 interview

Interview experience

5
  
Excellent
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WatchGuard Technologies Software Developer Salary
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₹9.4 L/yr - ₹10 L/yr
23% more than the average Software Developer Salary in India
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