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Perfex Technologies Software Engineer Interview Questions and Answers
7 Interview questions
Data refers to facts, statistics, or information collected for analysis and reference in various fields.
Data can be qualitative (descriptive) or quantitative (numerical).
Examples of qualitative data include colors, names, and labels.
Quantitative data can be measured, such as height, weight, or temperature.
Data can be structured (like databases) or unstructured (like text or images).
In computing, data is processed ...
I have learnt SQL and NoSQL databases such as MySQL, PostgreSQL, MongoDB, and Redis.
SQL databases include MySQL and PostgreSQL
NoSQL databases include MongoDB and Redis
Have experience with writing queries, creating tables, and optimizing database performance
OOP principles include encapsulation, inheritance, polymorphism, and abstraction, which enhance code organization and reusability.
Encapsulation: Bundling data and methods that operate on the data within a single unit (class). Example: A 'Car' class with properties like 'speed' and methods like 'accelerate()'.
Inheritance: Mechanism where a new class derives properties and behaviors from an existing class. Example: ...
Microservices are a software development technique where applications are composed of small, independent services. MVC Pattern is a design pattern used in software engineering for separating concerns in an application.
Microservices involve breaking down a large application into smaller, independent services that communicate with each other through APIs.
Each microservice is responsible for a specific function and c...
Heap memory is used for dynamic memory allocation, while stack memory is used for static memory allocation.
Heap memory is allocated at runtime and can be accessed globally.
Stack memory is allocated at compile time and is limited in size.
Examples of heap memory usage include dynamic arrays and objects created with 'new'.
Examples of stack memory usage include local variables and function call stack.
Proficient in Java, Python, JavaScript, and SQL. Familiar with HTML, CSS, and Git.
Java
Python
JavaScript
SQL
HTML
CSS
Git
Method overloading is having multiple methods in the same class with the same name but different parameters. Method overriding is having a method in a subclass with the same name and parameters as a method in the superclass.
Method overloading is resolved at compile time based on the method signature.
Method overriding is resolved at runtime based on the object type.
Method overloading is used to provide different im...
Perfex Technologies Software Engineer Interview Experiences
1 interview found
Selected
I applied via Recruitment Consulltant and was interviewed before Oct 2023. There were 3 interview rounds.
(3 Questions)
- Q1. Tell me about yourself
- Q2. Programming Languages and Technologies you know
- Ans.
Proficient in Java, Python, JavaScript, and SQL. Familiar with HTML, CSS, and Git.
Java
Python
JavaScript
SQL
HTML
CSS
Git
- Q3. Database you learnt
(5 Questions)
- Q1. What is a data
- Q2. OOP's principles and explain them
- Q3. Method Overloading vs Method Over riding
- Ans.
Method overloading is having multiple methods in the same class with the same name but different parameters. Method overriding is having a method in a subclass with the same name and parameters as a method in the superclass.
Method overloading is resolved at compile time based on the method signature.
Method overriding is resolved at runtime based on the object type.
Method overloading is used to provide different impleme...
- Q4. What is Microservices, MVC Pattern
- Ans.
Microservices are a software development technique where applications are composed of small, independent services. MVC Pattern is a design pattern used in software engineering for separating concerns in an application.
Microservices involve breaking down a large application into smaller, independent services that communicate with each other through APIs.
Each microservice is responsible for a specific function and can be...
- Q5. Heap Memory vs Stack Memory
- Ans.
Heap memory is used for dynamic memory allocation, while stack memory is used for static memory allocation.
Heap memory is allocated at runtime and can be accessed globally.
Stack memory is allocated at compile time and is limited in size.
Examples of heap memory usage include dynamic arrays and objects created with 'new'.
Examples of stack memory usage include local variables and function call stack.
1. Create a Login Page.
2. After login register a employee (CURD operations).
3. Enable JWT for login and show the user name logged and Auto logout after 1min session.
Interview Preparation Tips
Skills evaluated in this interview
Top trending discussions
Interview questions from similar companies
Interview Preparation Tips
Experience: A coding test (Students were asked to bring Laptops)
Tips: Be thorough with C/C++, networking, OS, Data structures and architecture
Duration: 90 minutes
Round: Interview
Experience: 3 rounds of interview, one hour each, all technical
Interview Process:All the three rounds are oriented around programming. A lot of focus was given to Data structures, C/C++, OS and algorithmsThe code from previous test is shown and they expect you to fix any bugs if thereThe interviewers are quietly friendly and help if you get stuck at any pointIf you do have any related projects, anticipate some thorough questions on that
Tips: Though the interviewers are helpful, get your basics clear early on. Don't rely on them.Practice coding sessions, a lot of companies have them as a shortlisting criteria.
College Name: IIT Madras
Interview Preparation Tips
Experience: PAPER DURATION: 3 hours
NO. OF QUESTIONS: 2 (20 marks each)
MAXIMUM MARKS: 20*2 = 40 marksQUESTION 1:
JSON Prettier:-Write a program which takes JSON as input and gives prettified JSONYou need to read JSON from STDIN. Input gives one line of uglified JSON.Output should be formatted JSON. Check the standard output link.Use 2 white spaces (not‘\t’) for one indentation.SAMPLE INPUT:{“group” : {list : [1,2,3]}, “list” : [“a”,”b”,”c”]}SAMPLE OUTPUT:{“group” : {List : [1,2,3]},“list” : [“a”,”b”,”c”]}EXPLANATION: Input will be uglifiedjson in one line and output will be prettified format of that. QUESTION 2:XML parse plus series computationEvaluate an expression given in XML format. Keys will be Expr- contains the entire expression. Elem – contains the digit, sum, Prod- contains two or more keys whose evaluation needs to be summed or multiplied respectively. Sub will contain 2 keys or more, where the second key onwards will have to be subtracted from the first one. Div- will contain 2 keys in which first key will need to be divided by second. SAMPLE INPUT:
20EXPLANATION:Input will be xml file through standard input. End of xml file marked by .
Duration: 180 minutes
Total Questions: 2
College Name: NA
Software Engineer Interview Questions & Answers
Prime Focus Technologies
Anonymous
posted on 30 Apr 2024
Selected
I applied via Recruitment Consulltant and was interviewed before Apr 2023. There were 3 interview rounds.
There was coding test
(2 Questions)
- Q1. 2 technical rounds
- Q2. Merge sort algorithm
- Ans.
Merge sort is a divide and conquer algorithm that divides the input array into two halves, sorts them separately, and then merges them back together in sorted order.
Divide the input array into two halves
Recursively sort each half
Merge the sorted halves back together
(1 Question)
- Q1. Leetcode Easy question
Skills evaluated in this interview
Selected
I applied via Approached by Company and was interviewed before Feb 2022. There were 4 interview rounds.
Chrome and Firefox Browser automation
Log file tail last n lines where n is configurable. Followup question on how you can optimize it further incase log file size is in TBs and incase it is cluster of servers
(4 Questions)
- Q1. Detailed Technical background check and discussion on past projects.
- Q2. Messaging queue and best practices
- Ans.
Messaging queues are used to manage asynchronous communication between different components of a system.
Use a reliable messaging queue system like RabbitMQ or Apache Kafka
Ensure messages are properly formatted and serialized
Implement message acknowledgement and retry mechanisms
Monitor queue health and performance
Consider message ordering and partitioning for scalability
Avoid long-running tasks in message handlers
- Q3. Binary Search Tree twisted question
- Q4. Map Reduce concept for solving dictionary keywords
- Ans.
MapReduce is a programming model for processing large data sets in parallel.
MapReduce divides the input data into chunks and processes them in parallel.
It consists of two phases: Map and Reduce.
Map function takes input data and converts it into key-value pairs.
Reduce function takes the output of Map as input and combines the values with the same key.
It is used for solving dictionary keywords by mapping each word to a k...
Interview Preparation Tips
Skills evaluated in this interview
I applied via Campus Placement and was interviewed in Sep 2024. There were 2 interview rounds.
MCQ based Questions from topics of DSA , web development
(1 Question)
- Q1. Asked us to live code tail -f unix command
- Ans.
Implementing the 'tail -f' command to continuously monitor and display new lines added to a file.
Use 'open' to access the file in read mode.
Utilize 'seek' to move to the end of the file initially.
Implement a loop to read new lines as they are added.
Use 'time.sleep()' to pause between reads to avoid busy waiting.
Handle file rotation by checking if the file has been recreated.
I applied via Campus Placement
Machine coding round
(2 Questions)
- Q1. TCP/IP related questions, what happens when you search a webpage?
- Q2. Past projects discussions
(1 Question)
- Q1. Behavioural questions on how would you tackle a particular scenario
Software Engineer Interview Questions & Answers
BrowserStack
18-546 surya kaushik
posted on 4 Jul 2024
Selected
I applied via Referral and was interviewed in Jan 2024. There were 3 interview rounds.
Normal 3 leetcode medium questions
Machine coding round to design tail -f
(2 Questions)
- Q1. Questions on internal working of os
- Q2. Questions on projects
I applied via Referral and was interviewed before Jun 2021. There were 3 interview rounds.
(2 Questions)
- Q1. The first round was a detailed discussion on one of my previous projects(almost 35 minutes, went to maximum possible depth) and one DSA question. Please prepare your resume projects very well.
- Q2. The question was a stack bases leetcode medium question.
(1 Question)
- Q1. This was the final round. It again a follow up of the first one. Started with a project discussion(did not go that much of depth as first one) . Again one DSA question was there to solve(they make you writ...
Interview Preparation Tips
2. Practice DSA regularly.
3. Know your projects ver well.
I applied via Walk-in and was interviewed in Jul 2022. There were 6 interview rounds.
There is 4 coding question all are on DSA.
They give one topic. and provide 10 to 15 minutes to think.
(1 Question)
- Q1. He is giving one coding question. ask some language questions.
(2 Questions)
- Q1. DSA question and databases question
- Q2. SQL question, stack, queue, and LinkedList are all the things we know from the scretch
(1 Question)
- Q1. They introduce the company details and normal question
Interview Preparation Tips
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