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JFrog Senior Software Engineer Interview Questions and Answers
JFrog Senior Software Engineer Interview Experiences
1 interview found
I applied via Recruitment Consulltant and was interviewed before Nov 2023. There were 2 interview rounds.
(1 Question)
- Q1. Designing a connection pool
- Ans.
Designing a connection pool for efficient database connections
Define maximum number of connections allowed in the pool
Implement connection timeout to prevent idle connections
Use connection pooling libraries like HikariCP or Apache DBCP
Consider connection validation to ensure connections are still valid
Implement connection recycling to reuse connections instead of creating new ones
(1 Question)
- Q1. Designing a drink ordering system in a bar
- Ans.
Designing a drink ordering system for a bar involves creating a user-friendly interface for customers to place orders and for staff to manage them.
Create a menu with categories such as cocktails, beers, wines, and non-alcoholic drinks.
Allow customers to browse the menu, select items, and add them to their order.
Include options for customization, such as choosing a specific brand of liquor or adding extra ingredients.
Im...
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I applied via Referral and was interviewed in Sep 2024. There were 2 interview rounds.
(4 Questions)
- Q1. Find longest palindromic substring in a given string.
- Ans.
Use dynamic programming to find the longest palindromic substring in a given string.
Iterate through the string and expand around each character to find palindromes.
Store the length of the longest palindrome found so far.
Return the substring based on the start and end indices of the longest palindrome.
- Q2. How to serialize and deserialise a tree
- Ans.
To serialize and deserialize a tree, use a recursive approach to traverse the tree and store the data in a suitable format.
Use pre-order traversal to serialize the tree by storing the node values in a list or string.
For deserialization, reconstruct the tree by recursively building nodes from the serialized data.
Consider using JSON or XML format for serialization to easily store and retrieve tree structure.
- Q3. Find if a given regex (containing ., * and lower case english chars) matches a given string.
- Ans.
Use regex library to match given regex with string.
Use a regex library like re in Python to match the given regex with the string.
Check if the regex matches the string using the library functions.
Handle cases where the regex contains special characters like . and * appropriately.
- Q4. Explain about throttling and implement throttle function.
- Ans.
Throttling is a technique used to control the rate of requests sent to a server.
Throttling helps prevent server overload by limiting the number of requests processed at a time.
Implementing a throttle function involves setting a maximum request rate and delaying excess requests.
Example: Implementing a throttle function in a web application to limit the number of API calls made to a third-party service.
Example: Throttlin...
(4 Questions)
- Q1. Find squares of elements in a sorted array and return the sorted response.
- Ans.
Sort the squares of elements in a sorted array and return the sorted response.
Iterate through the array and square each element.
Store the squared values in a new array.
Sort the new array and return it.
- Q2. Write a short promise example and implement your own promise
- Ans.
A promise is a commitment to do something in the future, typically used for asynchronous operations in JavaScript.
Promises are used to handle asynchronous operations in JavaScript.
They represent a value that may be available now, in the future, or never.
Promises have three states: pending, fulfilled, or rejected.
Example: new Promise((resolve, reject) => { setTimeout(() => resolve('Done!'), 1000); });
- Q3. Explain event loop, what are different types of queues in event loop
- Ans.
Event loop is a mechanism that allows for asynchronous execution of code by managing the order of events in a single thread.
Event loop continuously checks the call stack for any functions that need to be executed, and processes them in a non-blocking manner.
Different types of queues in event loop include microtask queue (Promise callbacks), macrotask queue (setTimeout, setInterval callbacks), and animation frame queue
- Q4. What is virtual DOM and why its faster
- Ans.
Virtual DOM is a lightweight copy of the actual DOM, used to improve performance by minimizing direct manipulation of the real DOM.
Virtual DOM is a concept used in frameworks like React to optimize rendering performance.
Changes are first made to the virtual DOM, which is then compared to the real DOM to identify the minimal updates needed.
This approach reduces the number of actual DOM manipulations, resulting in faster...
Interview Preparation Tips
- React.Js
- Javascript
- DSA
Skills evaluated in this interview
Selected
I applied via Company Website
A code to identify errors and write Junit. Optimise the code as well.
(2 Questions)
- Q1. Stacks using queue
- Ans.
Implementing a stack using two queues
Use two queues to simulate a stack
Push operation: Enqueue the element to queue 1
Pop operation: Dequeue all elements from queue 1 to queue 2, dequeue the last element from queue 1, then swap the queues
Top operation: Return the front element of queue 1
Example: Push 1, 2, 3 - Queue 1: [1, 2, 3], Queue 2: []
Example: Pop - Queue 1: [1, 2], Queue 2: [3]
- Q2. BFS and Knapsack problem, previous project experience
Interview Preparation Tips
Skills evaluated in this interview
I applied via Naukri.com and was interviewed in Jul 2024. There was 1 interview round.
Two questions asked:
1. Partition equal sum
2. find length largest region boolean matrix
Interview Preparation Tips
- Hld
- LLD
- Coding
Selected
I applied via Referral and was interviewed in Jul 2024. There were 2 interview rounds.
Full stack question with java and angular and sql
Case study on project
Senior Software Engineer Interview Questions & Answers
Oracle Cerner
Anonymous
posted on 22 Feb 2024
Selected
I applied via Recruitment Consulltant and was interviewed in Jan 2024. There were 6 interview rounds.
(1 Question)
- Q1. 2 DSA questions
(1 Question)
- Q1. Half an hour of behavioral questions and 1 DSA question
(1 Question)
- Q1. One hour discussion of the work that I have done till now
(1 Question)
- Q1. 1 Hard DSA question
(1 Question)
- Q1. 1 Hard DSA question
(1 Question)
- Q1. Design round for HLD
Interview Preparation Tips
I applied via Referral and was interviewed in Mar 2024. There was 1 interview round.
(3 Questions)
- Q1. Difference between structure and class
- Ans.
Structure is a user-defined data type that groups related data members, while class is a blueprint for creating objects with data members and member functions.
Structure is a value type, while class is a reference type
Structure members are public by default, while class members are private by default
Structure does not support inheritance, while class supports inheritance
Example: struct Person { string name; int age; };
- Q2. What is Pass by Value & pass by Reference
- Ans.
Pass by value involves passing a copy of the actual value, while pass by reference involves passing a reference to the actual value.
Pass by value: actual value is copied and changes made to the copy do not affect the original value
Pass by reference: reference to the actual value is passed, changes made to the reference affect the original value
Example: Pass by value - int x = 10; func(x); // x remains 10 after func cal...
- Q3. Print ****** *** *
Interview Preparation Tips
Skills evaluated in this interview
I applied via Approached by Company and was interviewed in May 2024. There was 1 interview round.
(1 Question)
- Q1. Design object store like amazon s3
Interview Preparation Tips
Senior Software Engineer Interview Questions & Answers
OpenText Technologies
Anonymous
posted on 16 May 2023
Selected
I applied via Approached by Company and was interviewed in Apr 2023. There were 2 interview rounds.
(9 Questions)
- Q1. Write a Program Nth term in a infinite series example: 2,4,8,2,4,8……..n…….infinite
- Ans.
Program to find the Nth term in an infinite series
The series has a repeating pattern
Use modulo operator to find the index of the repeating pattern
Calculate the value of Nth term based on the pattern
- Q2. Write a Program identify Max length of a substring from a given string and also the substring should be palindrome
- Ans.
Program to find the longest palindrome substring in a given string.
Iterate through the string and check for palindromes of different lengths
Store the longest palindrome found
Return the length and substring
- Q3. What is your comfort level on HTML, CSS and JavaScript
- Ans.
I am very comfortable with HTML, CSS and JavaScript.
I have extensive experience in developing responsive web applications using HTML, CSS and JavaScript.
I am proficient in using CSS preprocessors like SASS and LESS.
I have worked with various JavaScript frameworks like React, Angular and Vue.js.
I am familiar with HTML5 and CSS3 features like Flexbox and Grid layout.
I am comfortable with debugging and troubleshooting iss
- Q4. What are reasons for your transitions in Career
- Ans.
Transitions were driven by desire for growth, new challenges, and better alignment with personal values.
Desire for professional growth and development
Seeking new challenges and opportunities
Alignment with personal values and mission
Exploring different industries and technologies
Relocation for personal reasons
- Q5. Oracle EBS 12.1 and 12.2 Technical Architecture Differences
- Ans.
Differences between Oracle EBS 12.1 and 12.2 Technical Architecture
12.2 has a web-based interface while 12.1 has a client-server interface
12.2 has a multi-node architecture while 12.1 has a single-node architecture
12.2 has a more modular architecture with fewer dependencies
12.2 has a more streamlined upgrade process compared to 12.1
- Q6. What is your current role and how do you handle your daily tasks
- Ans.
I am currently working as a Senior Software Engineer and I handle my daily tasks by prioritizing them based on their importance and urgency.
I start my day by checking my emails and responding to any urgent requests
I then review my to-do list and prioritize my tasks for the day
I break down complex tasks into smaller, more manageable ones
I collaborate with my team members to ensure that we are all on the same page
I use p...
- Q7. Tell me in detail step by step process for registering XML Publisher Report
- Ans.
The process for registering XML Publisher Report
Create a data model for the report
Create a template for the report using RTF or XSL-FO
Upload the template to the server
Create a report definition using the data model and template
Register the report definition with the XML Publisher server
- Q8. Java Exceptions hierarchy(IOException then Exception Block , what error we get here)
- Q9. Write a Program to find a second max in the give list? and Time Complexity
- Ans.
Program to find second max in a list and its time complexity
Sort the list in descending order and return the second element
Traverse the list and keep track of the maximum and second maximum elements
Time complexity: O(n)
Interview Preparation Tips
- Java
- Web Services
- MVC
- XML Publisher
- Oracle Apps
- SQL
- Performance Tuining
Skills evaluated in this interview
Senior Software Engineer Interview Questions & Answers
Automatic Data Processing (ADP)
Anonymous
posted on 13 Nov 2024
Selected
I was interviewed before Nov 2023.
(1 Question)
- Q1. String Interpolation and string related methods
(2 Questions)
- Q1. Find the duplicate in the string
- Ans.
Use a hash set to find duplicates in a string array
Iterate through the array and add each element to a hash set
If the element is already in the hash set, it is a duplicate
- Q2. Reverse the string
- Ans.
Reverse a given string
Create an empty string to store the reversed string
Iterate through the original string from end to start and append each character to the new string
Return the reversed string
(1 Question)
- Q1. Basic definitions and project related queries
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