50+ Yes Bank Interview Questions and Answers

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.

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.

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

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

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 behavior.

Session is maintained through session affinity or sticky sessions.

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

• Sticky sessions use cookies to track the user's session and direct them to the same server.

• Load balancers can also use IP-based affinity to maintain sessions.

• Session persistence can be configured based on time or number of requests.

• Without session affinity, users may experience issues with lost data or inconsistent behavior.

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.

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

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

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.

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

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.

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 Manager

To burn a wood of some size in 15 min instead of 30 min, split it into two halves and burn them simultaneously.

• Split the wood into two halves

• Burn both halves simultaneously

• Use a larger flame or accelerant to increase the burning rate

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

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

To implement critical section in Java, use synchronized keyword on the shared variable.

• Use synchronized keyword to ensure only one thread can access the shared variable at a time.

• The shared variable should be the object on which the synchronized keyword is applied.

• Example: synchronized(sharedObject) { //critical section code }

The issue could be due to various factors such as targeting, messaging, or timing. Steps taken include analyzing data, conducting A/B testing, and adjusting strategies accordingly.

• Identify the specific goals and KPIs of the campaign to determine where it may be falling short

• Analyze data such as click-through rates, conversion rates, and engagement metrics to pinpoint areas of underperformance

• Conduct A/B testing to test different variables such as ad copy, visuals, or targetin...read more

Find missing element in an array of elements from 0 to n-1 using different approaches.

• Approach 1: Sum of n natural numbers - sum of array elements

• Approach 2: XOR all array elements and XOR with n natural numbers

• Approach 3: Binary search for missing element

• Approach 4: Using a hash table to store array elements

To convert from video to audio, you can use various software and online tools.

• Use software like VLC Media Player, Handbrake, or FFmpeg to convert video to audio.

• Online tools like Online-Convert.com and CloudConvert.com can also be used for conversion.

• Choose the desired audio format and quality before converting.

• Ensure that the video file is compatible with the software or tool being used for conversion.

Targeting specific audience involves identifying key demographics, interests, and behaviors to tailor marketing strategies.

• Conduct market research to understand the target audience's demographics, interests, and behaviors.

• Utilize data analytics tools to track and analyze customer behavior and preferences.

• Create buyer personas to represent different segments of the target audience.

• Use social media targeting options to reach specific demographics based on age, location, interes...read more

A/B testing is a method used to compare two versions of a webpage or app to determine which one performs better.

• A/B testing involves creating two versions (A and B) of a webpage or app with one differing element, such as a headline or call-to-action button.

• Users are randomly shown either version A or B, and their interactions are measured to determine which version performs better in terms of conversions or other metrics.

• The version that performs better is then implemented as...read more

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

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 data such as login credentials, shopping cart items, etc.

The image file height refers to the vertical size of the image in pixels.

• Image file height is measured in pixels.

• It determines the vertical size of the image.

• The height can be found in the image file's metadata or by opening the image in an image editor and checking its properties.

The question is unclear and does not make sense in the context of a Wordpress Developer interview.

• The question is likely a mistake or a joke.

• There is no codec with the last name.

• Codec is a term used in digital media to refer to a method of encoding and decoding data.

• As a Wordpress Developer, knowledge of codecs may be useful for working with multimedia content on websites.

OGG to MP3 conversion can be done using various online converters or software.

• Use online converters like CloudConvert, Convertio, etc.

• Use software like VLC media player, Audacity, etc.

• Install FFmpeg and use command line to convert.

• Check for copyright issues before converting.

• Ensure quality of converted file is satisfactory.

I have extensive experience with Google Tag Manager, including setting up tracking codes, triggers, and variables.

• Implemented various tracking codes for website analytics and conversion tracking

• Created custom triggers and variables to track specific user interactions

• Utilized Google Tag Manager to streamline the process of adding and updating tags on websites

The integration workflow involves connecting different applications to enable seamless data exchange.

• Identify the systems that need to be integrated

• Define the data flow between the systems

• Develop APIs or connectors for data exchange

• Test the integration to ensure data accuracy and consistency

• Monitor and maintain the integration for ongoing performance

• Examples: Integrating CRM system with marketing automation platform, connecting e-commerce website with inventory management sys...read more

Use a media converter software or an online converter tool to convert WAV to MP3.

• Download and install a media converter software like Audacity or Freemake Audio Converter.

• Open the software and import the WAV file.

• Choose MP3 as the output format and select the desired quality.

• Click on the convert button and wait for the process to complete.

• Alternatively, use an online converter tool like Online-Convert or Zamzar.

• Upload the WAV file and select MP3 as the output format.

• Click on ...read more

Amitabh Chaudhry is the CEO of Axis Bank.

• Amitabh Chaudhry became the CEO of Axis Bank in January 2019.

• He was previously the MD and CEO of HDFC Life Insurance Company.

• Under his leadership, Axis Bank has focused on digital transformation and customer-centric initiatives.

A cropped image is an image that has been trimmed or cut to a specific size or shape.

• Cropping an image removes unwanted parts of the image

• Cropped images are often used for thumbnails or profile pictures

• Cropping can be done manually or with software like Photoshop

• Aspect ratio should be considered when cropping to avoid distortion

GST stands for Goods and Services Tax.

• GST stands for Goods and Services Tax

• It is an indirect tax levied on the supply of goods and services in India

• Implemented on 1st July 2017 to replace multiple indirect taxes like VAT, service tax, etc.

Java code to generate fibonacci series

• Use a loop to generate the series

• Start with the first two numbers 0 and 1

• Add the previous two numbers to get the next number

Three approaches to center a div element

• Using CSS flexbox: set display property of parent element to flex and justify-content to center

• Using CSS grid: set display property of parent element to grid and place the div in the center grid area

• Using margin: set margin property of the div to auto