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Interview Questionnaire 

12 Questions

  • Q1. Given a no K and an array. Find pair of elements whose sum is equal to given no K
  • Ans. 

    Find pair of elements in an array whose sum is equal to a given number K.

    • Iterate through the array and for each element, check if K minus the element exists in the array.

    • Use a hash table to store the elements and their indices for faster lookup.

    • If multiple pairs exist, return any one of them.

    • If no pair exists, return null or an appropriate message.

  • Answered by AI
  • Q2. If there is a website run by 2 servers. These 2 servers balances the load using Load Balancer. So, if 1 session is created on 1 server and say load is shift to another server immediately, then how session ...
  • Ans. 

    Session is maintained using session affinity or sticky sessions.

    • Session affinity ensures that a user's session is always directed to the same server.

    • Load balancer uses a unique identifier to route requests to the same server.

    • Sticky sessions can be implemented using cookies or URL rewriting.

    • Session replication can also be used to maintain session data across multiple servers.

  • Answered by AI
  • Q3. WAP to implement some basic Design Patterns like Singleton?
  • Ans. 

    Singleton pattern ensures only one instance of a class is created and provides a global point of access to it.

    • Create a private constructor to prevent direct instantiation of the class

    • Create a private static instance of the class

    • Create a public static method to access the instance

    • Ensure thread safety by using synchronized keyword or static initialization block

    • Examples: Logger, Configuration Manager, Database Connection

  • Answered by AI
  • Q4. Abstract class? How it is different from interface? Is multiple inheritance possible in php? How?
  • Ans. 

    Explaining abstract class, interface and multiple inheritance in PHP.

    • Abstract class is a class that cannot be instantiated and can have abstract methods.

    • Interface is a collection of abstract methods and constants that can be implemented by a class.

    • Multiple inheritance is not possible in PHP, but can be achieved using interfaces.

    • Interfaces can be implemented by multiple classes, allowing for multiple inheritance-like be

  • Answered by AI
  • Q5. Write a stored procedure from a given set of tables and conditions. Simple one
  • Ans. 

    Write a stored procedure from given tables and conditions

    • Identify the tables and their relationships

    • Determine the conditions to be used in the stored procedure

    • Write the SQL code for the stored procedure

    • Test the stored procedure to ensure it returns the desired results

  • Answered by AI
  • Q6. How to increase php memory at run time, if it exhausts?
  • Ans. 

    To increase PHP memory at run time, modify the php.ini file or use ini_set() function.

    • Edit the memory_limit value in php.ini file

    • Use ini_set('memory_limit', '256M') function to increase memory limit at run time

    • Check for memory leaks in the code

    • Use unset() function to free up memory after use

  • Answered by AI
  • Q7. What all we can do with php.ini?
  • Ans. 

    php.ini is a configuration file for PHP that allows users to customize various settings.

    • Change PHP settings such as memory limit, file upload size, and error reporting

    • Enable or disable extensions and modules

    • Set timezone and language settings

    • Configure email settings

    • Control caching and session settings

  • Answered by AI
  • Q8. Session and cookies?
  • Q9. Javascript clausers?
  • Q10. Jquery function to get domain from a url?
  • Ans. 

    Use window.location to get domain from a url in jQuery.

    • Use window.location to get the full url

    • Use .hostname to get the domain name

    • Use .replace() to remove 'www.' if present

  • Answered by AI
  • Q11. WAP to get smallest plindron number larger than the given no?
  • Ans. 

    WAP to find smallest palindrome number larger than given number.

    • Convert the given number to string and check if it is already a palindrome.

    • If not, increment the number and check if it is a palindrome.

    • Repeat until a palindrome number larger than the given number is found.

    • Use a while loop to implement the above steps.

  • Answered by AI
  • Q12. WAP to check if linked list elements is a palindrome without using any extra space?
  • Ans. 

    WAP to check if linked list elements is a palindrome without using any extra space.

    • Traverse the linked list and reverse the second half of the list

    • Compare the first half with the reversed second half

    • Use two pointers to traverse the list, one at normal speed and other at double speed

  • Answered by AI

Interview Preparation Tips

Skills: Algorithm, JQuery, Javascript
College Name: na

Skills evaluated in this interview

Interview Questionnaire 

7 Questions

  • Q1. Find the first non repetitive character in a string?
  • Ans. 

    Find the first non-repeating character in a string.

    • Create a hash table to store the frequency of each character in the string.

    • Iterate through the string and check the frequency of each character.

    • Return the first character with a frequency of 1.

  • Answered by AI
  • Q2. What is connection pooling
  • Ans. 

    Connection pooling is a technique of reusing database connections to improve performance.

    • Connection pooling helps to reduce the overhead of creating and destroying database connections.

    • It maintains a pool of connections that can be reused by multiple clients.

    • Connection pooling is commonly used in web applications to handle multiple requests simultaneously.

    • It can be configured with parameters like maximum number of conn...

  • Answered by AI
  • Q3. Write a singleton class in php?
  • Ans. 

    A singleton class in PHP is a class that can only be instantiated once.

    • Create a private constructor to prevent direct instantiation

    • Create a private static variable to hold the instance of the class

    • Create a public static method to get the instance of the class

    • Ensure that the public static method always returns the same instance

  • Answered by AI
  • Q4. How to write a Connection class to MySQL database using PHP?
  • Ans. 

    To connect to MySQL database using PHP, create a Connection class.

    • Use mysqli_connect() function to establish a connection

    • Pass the database credentials as parameters to the function

    • Create a constructor method to initialize the connection

    • Create a query method to execute SQL queries

    • Close the connection using mysqli_close() method

  • Answered by AI
  • Q5. What are the different types of error in php?
  • Ans. 

    There are three types of errors in PHP: syntax errors, runtime errors, and logical errors.

    • Syntax errors occur when the code is not written correctly, such as missing semicolons or parentheses.

    • Runtime errors occur during the execution of the code, such as trying to access an undefined variable.

    • Logical errors occur when the code runs without errors, but produces unexpected results, such as a miscalculation in a formula.

  • Answered by AI
  • Q6. How session works in php?
  • Ans. 

    Session in PHP allows to store user data on the server for later use.

    • Session starts when a user logs in and ends when the user logs out or the session expires.

    • Session data is stored on the server and identified by a unique session ID.

    • Session variables can be set and accessed using the $_SESSION superglobal array.

    • Session can be destroyed using the session_destroy() function.

    • Session can be used to store user-specific dat...

  • Answered by AI
  • Q7. Find missing element in an array of elements from 0 to n-1?
  • Ans. 

    Find missing element in an array of elements from 0 to n-1

    • Calculate sum of all elements in array and subtract from sum of n natural numbers

    • Use XOR operation on all elements and n natural numbers

    • Sort the array and find the missing element

  • Answered by AI

Interview Preparation Tips

Round: Test
Experience: You have been given stack of documents that have already been processed and some that have not. your task is to classify these documents into one of the eight categories: [1,2,3..8]. However you notice that there are already large amount of documents which have already been correctly processed(training data). you decide to use machine learning on this data in order to categorize.First line of the input file contain T number of documents. T lines will follow each containing a series of space separated words which represents the processed word.

Skills: PHP, data base, data structure
College Name: NA

Skills evaluated in this interview

Interview Preparation Tips

Round: Test
Experience: Very easy questions. Practice R.S Agarwal aptitude and verbal books.
Duration matters. Solve the questions fast.Skip the questions if you think you don't know dont kill time on them.

In verbal most of the questions on subject verb agrement-wikipedia links are enough to practice on them.

It's easy just try to solve as many as u can and dont leave the questions unanswered,no negative marking.
Duration: 80 minutes
Total Questions: 120

Skill Tips: Talk in english. Be confident. smile in face.
Skills: c Language, Thinking ability, English fluency
College Name: K L University
Funny Moments: Im very bad in solving puzzles. The HR over there asking puzzles to every one.
It's my turn the 1st question he asked me was what are you bad at?
no 2nd thought I said solving puzzles...In that way he didnt ask me any puzzles. He checked my confidence, english fluency...e.t.c.

Interview Questionnaire 

3 Questions

  • Q1. Questions from hobbies etc mentioned in cv
  • Q2. Things i learned during my summer training
  • Ans. 

    During my summer training, I learned various programming languages, software development methodologies, and practical application of theoretical concepts.

    • Learned programming languages such as Java, Python, and SQL

    • Gained knowledge of software development methodologies like Agile and Waterfall

    • Applied theoretical concepts in real-world projects, enhancing problem-solving skills

  • Answered by AI
  • Q3. Questions from dbms,c,c++,java

Interview Preparation Tips

Round: Resume Shortlist
Experience: generally the questions were asked from the hobbies which i mentioned in the resume,so be honest
Tips: never over do things write what you are

Round: Test
Duration: 70 min minutes

General Tips: be positive never give up and take one step at a time
Skills: presence of mind, spoken skills specially english, body language
College Name: KIIT UNIVERSITY
Motivation: brand and working environment
Funny Moments: once u r placed every moment is happy and funny...

I appeared for an interview in Oct 2016.

Interview Questionnaire 

2 Questions

  • Q1. Question on specific language
  • Q2. Based on company

Interview Preparation Tips

Round: Test
Experience: There was 7 sections. And each section has a 60% sectional cutoff
Tips: Attempt questions which you know and you are confident about
Duration: 50 minutes
Total Questions: 70

Round: Story writing
Experience: Write a story based on picture
Tips: No grammatical errors must be there

Round: Technical Interview
Experience: 1 hour interview but based on technical and daily life
Tips: Be confident

Round: HR Interview
Experience: Just a simple round..bcoz u are almost selected
Tips: Be positive

Skills: Communication And Confidence

I appeared for an interview before May 2016.

Interview Questionnaire 

1 Question

  • Q1. Where do you see yourself in 5 years from now.
  • Ans. 

    In 5 years, I see myself as a senior software engineer leading a team of developers on innovative projects.

    • Continuing to enhance my technical skills through ongoing learning and certifications

    • Taking on more leadership responsibilities within the team

    • Contributing to the company's growth and success through my expertise

    • Mentoring junior team members to help them grow in their careers

  • Answered by AI

Interview Preparation Tips

Round: Test
Experience: It was just a basic aptitude test.
Tips: You need to speed up things.
Duration: 1 hour
Total Questions: 120

Round: Email Round
Experience: We just had to write and Email in 5 mins.
Tips: Check your grammar.

Round: Technical + HR Interview
Experience: Just checking the communication skills.
Tips: Just need to be confident.

Skills: Written Communication Skills
College Name: Global Institute of Technology

I applied via Shine and was interviewed in Dec 2017. There was 1 interview round.

Interview Questionnaire 

3 Questions

  • Q1. Tell me about your self
  • Ans. 

    I am a results-driven sales professional with 5+ years of experience in exceeding sales targets and building strong client relationships.

    • Experienced in B2B sales and account management

    • Proven track record of meeting and exceeding sales targets

    • Strong communication and negotiation skills

    • Ability to build and maintain strong client relationships

    • Proficient in CRM software and sales analytics

  • Answered by AI
  • Q2. What do you mean by Customer serive
  • Ans. 

    Customer service refers to the assistance and support provided to customers before, during, and after a purchase.

    • Customer service involves addressing customer inquiries, concerns, and complaints.

    • It includes providing information about products or services, helping customers make purchasing decisions, and resolving issues.

    • Customer service can be provided through various channels such as phone, email, live chat, or in-pe...

  • Answered by AI
  • Q3. Tell me How to sales Our product
  • Ans. 

    To sell our product, we need to understand the customer's needs and show them how our product can solve their problems.

    • Research and understand the target market

    • Identify the customer's pain points and needs

    • Highlight the unique features and benefits of our product

    • Provide excellent customer service and follow-up

    • Offer promotions or discounts to incentivize purchase

    • Use persuasive language and storytelling to create an emoti...

  • Answered by AI

Interview Preparation Tips

General Tips: I have no good feedback my experience is not good
Skills: Communication, Body Language, Presentation Skills
Duration: <1 week

I applied via Other and was interviewed in Nov 2017. There were 5 interview rounds.

Interview Questionnaire 

4 Questions

  • Q1. Brief Role on job and tools and technology I worked with day to day activity
  • Ans. 

    As a Senior Software Engineer, I worked with various tools and technologies to develop and maintain software applications.

    • Developed and maintained software applications using Java, Python, and C++ programming languages

    • Used Agile methodology for software development and collaborated with cross-functional teams

    • Worked with various tools such as Git, JIRA, Jenkins, and Docker for version control, issue tracking, continuous...

  • Answered by AI
  • Q2. In-depth technical interview which went around 40 min. since i had 8 years of experience
  • Q3. Fully technical
  • Q4. Salary discussion and Document verification.

Interview Preparation Tips

Round: Resume Shortlist
Experience: Keywords that I put in of the technology, tools , experience.. (I guess )

General Tips: Just stay calm. Do not show fake experience, Speak genuinely, Answer to the point and explain if you have to add on more depending on your experience. Do not be over confident. Speak start to the eyes
Skills: Communication, Problem Solving, Analytical Skills, Leadership, Presentation Skills, Decision Making Skills
Duration: 1-3 Months

Interview Preparation Tips

Round: Resume Shortlist
Experience: The eligibility criteria was > 65% in academics.it was a pool campus drive in which nearly 5-6 college students participated in it

Round: Test
Duration: 1 hour

College Name: Institute of aeronautical engineering

I appeared for an interview in Apr 2017.

Interview Questionnaire 

2 Questions

  • Q1. What is firmware and where it is used?
  • Ans. 

    Firmware is a type of software that is embedded in hardware devices to control their functionality.

    • Firmware is a combination of hardware and software.

    • It is used to control the behavior of hardware devices.

    • Firmware is typically stored in non-volatile memory, such as ROM or flash memory.

    • Examples of devices that use firmware include routers, printers, and digital cameras.

  • Answered by AI
  • Q2. Tell me about yourself only.
  • Ans. 

    I am a passionate software developer with experience in building web applications and solving complex problems.

    • Experienced in programming languages such as Java, JavaScript, and Python

    • Familiar with front-end technologies like HTML, CSS, and React

    • Strong problem-solving skills and ability to work in a team environment

    • Previous projects include developing a customer management system for a small business

  • Answered by AI

Interview Preparation Tips

Round: aptitude
Experience: the test had around 70 questions to be answered in 1 hour
Tips: keep watch on time and be quick enough because each sections has sectional cutoff.

Round: Technical Interview
Experience: the test had around 70 questions to be answered in 1 hour
Tips: keep watch on time and be quick enough because each sections has sectional cutoff.

Round: HR Interview
Experience: they tested my core knowledge and learning skill.
Tips: be strong in your basics.

Skills: Ability To Think Beyond Boundaries
College Name: mnm jec

Skills evaluated in this interview

91mobiles.com Interview FAQs

How to prepare for 91mobiles.com interview?
Go through your CV in detail and study all the technologies mentioned in your CV. Prepare at least two technologies or languages in depth if you are appearing for a technical interview at 91mobiles.com. The most common topics and skills that interviewers at 91mobiles.com expect are Ad Sales, B2B Sales, Corporate Sales, Media Sales and Sales.

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91mobiles.com Interview Process

based on 1 interview

Interview experience

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91mobiles.com Reviews and Ratings

based on 17 reviews

3.7/5

Rating in categories

3.7

Skill development

3.7

Work-life balance

3.6

Salary

3.6

Job security

3.5

Company culture

3.3

Promotions

3.2

Work satisfaction

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