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ZocDoc Interview Questions, Process, and Tips for Experienced
Top ZocDoc Interview Questions and Answers for Experienced
- Q1. What is difference between schema and database testingasked in QA Engineer interview
- Q2. Difference between element and elements in selenium Basic sql query Acid propertyasked in QA Engineer interview
- Q3. What is acid property in sqlasked in QA Engineer interview
ZocDoc Interview Experiences for Experienced
5 interviews found
kartik chourasiya
(5 Questions)
- Q1. Difference between element and elements in selenium Basic sql query Acid property
- Ans.
In Selenium, element refers to a single web element while elements refer to a collection of web elements. Basic SQL query retrieves data from a database. ACID properties ensure database transactions are reliable.
Element in Selenium refers to a single web element like a button or input field
Elements in Selenium refer to a collection of web elements, like a list of links or buttons
Basic SQL query retrieves data from a da...
- Q2. Difference between element and elements
- Ans.
Element is a singular object, while elements refer to multiple objects.
Element is a single item in a collection or array.
Elements are multiple items in a collection or array.
Example: 'apple' is an element in the array ['apple', 'banana', 'orange'].
Example: 'banana' and 'orange' are elements in the same array.
- Q3. What is Bva in testing
- Ans.
Boundary Value Analysis (BVA) is a testing technique used to identify errors at boundaries of input ranges.
BVA involves testing at the boundaries of valid and invalid input ranges
It helps in identifying errors that occur at the edges of input values
Examples include testing a login form with minimum and maximum character limits for password
BVA is used to ensure that the software behaves correctly at the boundaries of in
- Q4. What is acid property in sql
- Ans.
ACID properties in SQL refer to a set of properties that ensure database transactions are processed reliably.
ACID stands for Atomicity, Consistency, Isolation, and Durability
Atomicity ensures that either all operations in a transaction are completed successfully or none are
Consistency ensures that the database remains in a consistent state before and after the transaction
Isolation ensures that multiple transactions can...
- Q5. What is difference between schema and database testing
- Ans.
Schema testing focuses on the structure of the database, while database testing focuses on the data within the database.
Schema testing ensures that the database tables, columns, relationships, and constraints are correctly defined.
Database testing involves verifying the data stored in the database, such as data integrity, accuracy, and consistency.
Schema testing is more focused on the design and structure of the databa...
Skills evaluated in this interview
Top ZocDoc QA Engineer Interview Questions and Answers
QA Engineer Interview Questions asked at other Companies
Anonymous
I applied via Company Website and was interviewed in Apr 2024. There were 2 interview rounds.
Writing test cases, basic sql
(1 Question)
- Q1. About previous experience and testing related topics
I applied via Naukri.com and was interviewed in Jan 2022. There were 4 interview rounds.
(1 Question)
- Q1. About work in previous organizations
(1 Question)
- Q1. About the technologies and tools we work
(1 Question)
- Q1. Expected output and flexiblity
(1 Question)
- Q1. Salary discussion and wilingness of work
Interview Preparation Tips
Technical Support Specialist Interview Questions asked at other Companies
I applied via Recruitment Consulltant and was interviewed before Jul 2023. There was 1 interview round.
Hacker rank based test
Staff Software Engineer Interview Questions asked at other Companies
ZocDoc interview questions for popular designations
I applied via Referral and was interviewed in Jan 2021. There were 4 interview rounds.
Interview Questionnaire
3 Questions
- Q1. What were the challenges you faced in your past experience.
- Q2. Why you want to join zocdoc
- Q3. What is the revenue model of our company
- Ans.
Our company's revenue model is based on subscription fees and advertising revenue.
Subscription fees from users who want access to premium features
Advertising revenue from companies who want to reach our user base
Possible revenue from partnerships and collaborations
Revenue may also come from data analysis and insights
Examples: Spotify, YouTube, LinkedIn
Interview Preparation Tips
Special Project Associate Interview Questions asked at other Companies
Top trending discussions
Interview questions from similar companies
I applied via Naukri.com and was interviewed before May 2020. There was 1 interview round.
Interview Questionnaire
1 Question
- Q1. Automation, Manual Testing, Payment Gateway
Interview Preparation Tips
Selected
I applied via Indeed and was interviewed before Aug 2023. There were 3 interview rounds.
(2 Questions)
- Q1. What is Smog Testing
- Ans.
Smog testing is a process to measure the amount of pollutants emitted by vehicles to ensure they meet environmental standards.
Smog testing is also known as emissions testing or vehicle inspection.
It is typically required by law to ensure vehicles are not emitting excessive pollutants into the air.
The testing process usually involves measuring the levels of pollutants such as carbon monoxide, hydrocarbons, and nitrogen ...
- Q2. What is SDLC lifecycle
- Ans.
SDLC lifecycle is the process of planning, creating, testing, and deploying software.
SDLC stands for Software Development Life Cycle
It includes phases like planning, analysis, design, implementation, testing, and maintenance
Each phase has specific goals and deliverables
Examples of SDLC models include Waterfall, Agile, and DevOps
(1 Question)
- Q1. Given was a case study of lift, need to make test cases regarding that.
(1 Question)
- Q1. What is your marital status, family and current job.
- Ans.
Married with two children, currently working as a QA Engineer.
Married with two children
Currently working as a QA Engineer
Skills evaluated in this interview
nerella saikrishna
Interview Questionnaire
12 Questions
- Q1. Insert a node in a Linked List, if a pointer to a node(it's not a head pointer) of Linked List is given.
- Q2. What is the Time Complexity of Binary Search and it's derivation
- Ans.
Binary Search has a time complexity of O(log n) and is derived from dividing the search space in half at each step.
Binary Search is a search algorithm that works on sorted arrays.
It starts by comparing the target value to the middle element of the array.
If the target value is smaller, the search continues on the lower half of the array.
If the target value is larger, the search continues on the upper half of the array.
T...
- Q3. Write code for QuickSort
- Ans.
QuickSort is a sorting algorithm that uses divide and conquer approach.
Choose a pivot element from the array
Partition the array into two sub-arrays, one with elements less than the pivot and one with elements greater than the pivot
Recursively apply the above steps to the sub-arrays
Combine the sorted sub-arrays to get the final sorted array
- Q4. Write code for Fibonacci Series using Recursion, Iteration and Dynamic Programming
- Ans.
Code for Fibonacci Series using Recursion, Iteration and Dynamic Programming
Recursion: Define a function that calls itself with the previous two numbers in the series as arguments
Iteration: Use a loop to calculate the series by adding the previous two numbers in each iteration
Dynamic Programming: Store the previous two numbers in variables and use them to calculate the next number in the series
- Q5. How to implement an operation with Stacks which will be similar to Queue
- Ans.
Implementing a Queue using Stacks
Use two stacks to implement a queue
Push elements onto the first stack
When dequeuing, pop all elements from the first stack and push onto the second stack
Pop the top element from the second stack to dequeue
If the second stack is empty, pop all elements from the first stack and push onto the second stack
- Q6. Write code for MergeSort
- Ans.
MergeSort is a divide and conquer algorithm that sorts an array of strings.
Divide the array into two halves
Recursively sort the two halves
Merge the sorted halves
- Q7. 2 types of detective ball puzzles
- Q8. 25 Horses, 5 Tracks, 3 Fastest Puzzle
- Q9. How the letters of a text are determined(Basically about OCR)
- Q10. Write code for Insertion Sort and Selection Sort and find their time complexities and also the cases where their usage is efficient
- Q11. Explain about Counting Sort
- Ans.
Counting Sort is a sorting algorithm that sorts elements by counting the number of occurrences of each unique element.
Count the occurrences of each element in the array
Calculate the cumulative sum of the counts
Place each element in the sorted array based on its count and cumulative sum
Time complexity is O(n+k) where n is the number of elements and k is the range of input
Example: Sort an array of strings based on their
- Q12. When we type a part of a word in chrome, how is it able to show all the types of words, which are consisted of that part
- Ans.
Chrome uses an algorithm to predict and suggest words based on user input.
Chrome's algorithm uses a combination of user history, bookmarks, and popular searches to predict and suggest words.
The algorithm also takes into account the frequency and recency of the user's input.
Chrome's suggestion feature is powered by Google's Autocomplete API, which uses machine learning to predict and suggest words.
The suggestions are di...
Interview Preparation Tips
Experience: First Question, at the start I was not able to answer and he gave me an hint(He asked me the insertion in an array). So, I got the idea for the insertion in Linked List and was able to answer it.
Remaining questions, I was able to answer confidently.
Tips: Take your own time in answering a question and be clear over your answer before telling about the code that you have written.
If you don't know an answer for some question, just keep telling him simple cases(which are valid), so that the interviewer will sometimes try to guide you through the solution.
Round: Technical Interview
Experience: I was able to answer all the questions confidently, since I know the answers for them, But the last question was out of my scope and I explained based on my intuition and knowledge.
Tips: Take your own time in answering a question and be clear over your answer before telling about the code that you have written.
If you don't know an answer for some question, just keep telling him simple cases(which are valid), so that the interviewer will sometimes try to guide you through the solution.
Round: Technical Interview
Experience: I have given the answers for 1&2 questions with clear explanation. And the third question is again out of my scope and I explained this also based intuition.
Tips: Take your own time in answering a question and be clear over your answer before telling about the code that you have written.
If you don't know an answer for some question, just keep telling him simple cases(which are valid), so that the interviewer will sometimes try to guide you through the solution.
General Tips: Take your own time in answering a question and be clear over your answer before telling about the code that you have written.
If you don't know an answer for some question, just keep telling him simple cases(which are valid), so that the interviewer will sometimes try to guide you through the solution.
Skill Tips: Take your own time in answering a question and be clear over your answer before telling about the code that you have written.
If you don't know an answer for some question, just keep telling him simple cases(which are valid), so that the interviewer will sometimes try to guide you through the solution.
Skills: Logical Puzzles, Algorithms And DataStructures
College Name: IIT Madras
Motivation: 1. Primary Reason: Passionate about Programming and Problem solving.
2. The profile is software Engineer.
3. You can see your idea, having an impact on the society which is possible with this type of company.
4. And a good package.
Funny Moments: Nothing Really...
Skills evaluated in this interview
I was interviewed before Apr 2021.
(3 Questions)
Round duration - 90 minutes
Round difficulty - Medium
This round had 3 coding questions of Medium to Hard level of difficulty.
- Q1.
Balanced Parentheses Combinations
Given an integer
Nrepresenting the number of pairs of parentheses, find all the possible combinations of balanced parentheses using the given number of pairs.Explanati...
- Ans.
Generate all possible combinations of balanced parentheses for a given number of pairs.
Use recursion to generate all possible combinations of balanced parentheses.
Keep track of the number of open and close parentheses used in each combination.
Return the valid combinations as an array of strings.
- Q2.
Trapping Rain Water Problem Statement
You are given a long type array/list
ARRof sizeN, representing an elevation map. The valueARR[i]denotes the elevation of theithbar. Your task is to determine th... - Ans.
Calculate the total amount of rainwater that can be trapped between given elevations in an array.
Iterate through the array and calculate the maximum height on the left and right of each bar.
Calculate the amount of water that can be trapped at each bar by taking the minimum of the maximum heights on the left and right.
Sum up the trapped water at each bar to get the total trapped water for the entire array.
- Q3.
Rotting Oranges Problem Statement
You are given a grid containing oranges where each cell of the grid can contain one of the three integer values:
- 0 - representing an empty cell
- 1 - representing a fre...
- Ans.
Find the minimum time required to rot all fresh oranges adjacent to rotten oranges.
Create a queue to store the coordinates of rotten oranges and perform BFS to rot adjacent fresh oranges.
Track the time taken to rot all fresh oranges and return -1 if not all fresh oranges can be rotten.
Update the grid with the new state of oranges after each second.
Handle edge cases such as empty grid or no fresh oranges present.
Example...
(3 Questions)
Round duration - 60 Minutes
Round difficulty - Medium
This was a standard DS/Algo round where I was given 2 questions to solve under 60 minutes. I was able to come up with the optimal approach for both the questions and then at the end of the interview I was also asked the famous Die Hard Water Puzzle.
- Q1.
Queue Using Stacks Implementation
Design a queue data structure following the FIFO (First In First Out) principle using only stack instances.
Explanation:
Your task is to complete predefined functions t...
- Ans.
Implement a queue using stacks following FIFO principle.
Use two stacks to simulate a queue.
For enQueue operation, push elements onto stack1.
For deQueue operation, if stack2 is empty, pop all elements from stack1 and push onto stack2, then pop from stack2.
For peek operation, if stack2 is empty, pop all elements from stack1 and push onto stack2, then return top of stack2.
For isEmpty operation, check if both stack1 and st...
- Q2.
Merge Intervals Problem Statement
You are provided with 'N' intervals, each containing two integers denoting the start time and end time of the interval.
Your task is to merge all overlapping intervals a...
- Ans.
Merge overlapping intervals and return sorted list of merged intervals by start time.
Sort the intervals based on start time.
Iterate through intervals and merge overlapping ones.
Return the merged intervals in sorted order.
- Q3. You have a 3-liter jar and a 5-liter jar. How can you measure exactly 4 liters using these two jars?
(4 Questions)
Round duration - 60 Minutes
Round difficulty - Medium
This round had 2 coding questions - first one related to Binary Tree and the second one was a simple question from Bit Manipulation. This was followed by some questions from OOPS.
- Q1.
Binary Tree Diameter Problem Statement
You are given a Binary Tree, and you need to determine the length of the diameter of the tree.
The diameter of a binary tree is the length of the longest path betwe...
- Ans.
The task is to find the diameter of a binary tree, which is the length of the longest path between any two end nodes in the tree.
Traverse the tree to find the longest path between two nodes.
Keep track of the maximum diameter found during traversal.
The diameter may not necessarily pass through the root node.
Consider both left and right subtrees while calculating the diameter.
Example: For input 1 2 3 4 -1 5 6 -1 7 -1 -1
- Q2.
Power of 2 Problem Statement
Determine if it is possible to reorder the digits of a given integer 'N' such that the resulting number is a power of two. The leading digit must not be zero.
Input:
The fir... - Ans.
The problem involves determining if it is possible to reorder the digits of a given integer to form a power of 2.
Iterate through all possible permutations of the digits of the given integer.
Check if any of the permutations form a power of 2.
Return 1 if a valid permutation is found, else return 0.
- Q3. What are some advantages of using Object-Oriented Programming (OOP)?
- Ans.
Advantages of OOP include code reusability, modularity, and easier maintenance.
Code reusability: Objects can be reused in different parts of the program, reducing redundancy.
Modularity: OOP allows for breaking down complex problems into smaller, more manageable parts.
Easier maintenance: Changes to one part of the codebase do not necessarily affect other parts, making maintenance easier.
Encapsulation: Data hiding and ab...
- Q4. What are access specifiers and what is their significance in Object-Oriented Programming?
- Ans.
Access specifiers define the level of access to class members in Object-Oriented Programming.
Access specifiers include public, private, protected, and default
Public members are accessible from outside the class
Private members are only accessible within the class
Protected members are accessible within the class and its subclasses
Default access is when no access specifier is specified
(1 Question)
Round duration - 30 Minutes
Round difficulty - Easy
This was my last round and I hoped it to go good just like the other rounds. The interviewer was very straight to point
and professional. The interview lasted for 30 minutes.
- Q1. Why should we hire you?
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
Interview Questionnaire
8 Questions
- Q1. Implement queue with the help of two stacks
- Ans.
Queue can be implemented using two stacks by maintaining the order of elements in the stacks.
Create two stacks, let's call them stack1 and stack2
When an element is enqueued, push it to stack1
When an element is dequeued, pop all elements from stack1 and push them to stack2
Pop the top element from stack2 and return it as the dequeued element
If stack2 is empty, repeat step 3
To get the front element of the queue, peek the
- Q2. Iven a table “student” of with columns Name and Marks. You have to write a SQL query to get the 2nd highest marks from the table. Also write a query to find the nth highest marks, where n can be any number
- Q3. What is left join. Give example. And Full outer join?
- Ans.
Left join returns all records from left table and matching records from right table. Full outer join returns all records from both tables.
Left join is used to combine two tables based on a common column.
In left join, all records from the left table are returned along with matching records from the right table.
If there is no match in the right table, NULL values are returned.
Example: SELECT * FROM table1 LEFT JOIN table...
- Q4. What is magic functions and autoloading in PHP?
- Ans.
Magic functions are special methods in PHP that start with __. Autoloading is a way to automatically load classes.
Magic functions are used to handle certain events in PHP, such as object creation or property access.
Autoloading allows PHP to automatically load classes when they are needed, without requiring manual includes.
Magic functions can be used in conjunction with autoloading to dynamically load classes or handle
- Q5. Given three arrays sorted in non-decreasing order, print all common elements in these arrays. Examples: ar1[] = {1, 5, 10, 20, 40, 80} ar2[] = {6, 7, 20, 80, 100} ar3[] = {3, 4, 15, 20, 30, 70, 80, 120} Ou...
- Ans.
Given three sorted arrays, find common elements.
Create three pointers to traverse each array
Compare the elements at the pointers and move the pointer of the smallest element
If all pointers point to the same element, add it to the result and move all pointers
Repeat until any pointer reaches the end of its array
- Q6. A puzzle. You will be given with a 3 Litre container & a 7 Litre Container. Measure exactly 5 Litres of water
- Q7. Asked about one of my projects I mentioned in my resume?
- Q8. Find if a number is a power of 2 or not?
- Ans.
Check if a number is a power of 2 or not.
A power of 2 has only one bit set in its binary representation.
Use bitwise AND operator to check if the number is a power of 2.
If n is a power of 2, then n & (n-1) will be 0.
Interview Preparation Tips
College Name: na
Motivation: Overall it was a very good experience. They test you from every aspect. In the End I would like to say that Practo is one of the best companies to work for.
Skills evaluated in this interview
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ZocDoc Interview Process for Experienced
based on 3 interviews
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