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A functional interface is an interface that contains only one abstract method and can be used as a lambda expression.
Functional interfaces can have multiple default or static methods, but only one abstract method.
Functional interfaces are used in lambda expressions to provide implementation for the abstract method.
Examples of functional interfaces in Java include Runnable, Callable, and ActionListener.
Types of locks include mutex locks, spin locks, read-write locks, and file locks.
Mutex locks: used to protect shared resources by allowing only one thread to access the resource at a time.
Spin locks: busy-waiting locks that repeatedly check for the lock to become available.
Read-write locks: allow multiple readers or a single writer to access a resource.
File locks: used to prevent multiple processes from simultaneously
I applied via Naukri.com and was interviewed in Jun 2024. There was 1 interview round.
A server-side script can be called from a UI action by defining a script action in the UI action configuration.
Define a script action in the UI action configuration with the appropriate server-side script function
Use gs.eventQueue() to trigger the server-side script from the UI action
Ensure proper permissions are set for the server-side script to be executed
OAuth authentication is a secure way to grant access to resources without sharing credentials.
OAuth stands for Open Authorization
It allows a user to grant a third-party application access to their resources without sharing their credentials
OAuth uses tokens for authentication instead of passwords
It is commonly used in APIs and web applications for secure authorization
Different types of business rules include client scripts, UI policies, data policies, and script includes.
Client scripts are used to run on the client side to perform actions or validations.
UI policies are used to set mandatory fields, read-only fields, or visibility conditions on forms.
Data policies are used to enforce data consistency and integrity by defining rules on fields.
Script includes are reusable scripts that...
An asynchronous business rule is a rule that runs in the background without blocking the user interface.
Asynchronous business rules are commonly used for long-running processes that do not require immediate user interaction.
They can be used for tasks such as sending email notifications, updating records in bulk, or performing complex calculations.
An example of an asynchronous business rule could be a rule that triggers...
Methods to call a server-side script from a client-side script
Using AJAX to make a server-side request
Using REST API calls to interact with server-side scripts
Using server-side events triggered by client-side actions
Using server-side functions called from client-side scripts
Triggers in Flow Designer are events that initiate a flow when a specified condition is met.
Triggers are used to start a flow based on a specific event or condition
They can be configured to listen for events like record creation, updates, or deletions
Triggers can also be set to run on a schedule or at a specific time
Input can be passed to a workflow activity using input parameters.
Define input parameters in the workflow activity
Pass values to the input parameters when starting the workflow
Access the input parameters within the workflow activity
To send a report with an attachment regarding an incident, follow these steps.
Navigate to the incident record in ServiceNow
Click on the 'More Options' menu and select 'Create PDF'
Attach the PDF report to the incident record
Notify the relevant stakeholders about the attached report
The different types of server-side scripts include Business Rules, Script Includes, UI Policies, and Client Scripts.
Business Rules are used to define custom server-side logic that runs when a record is inserted, updated, or deleted.
Script Includes are reusable scripts that can be called from other scripts or business rules.
UI Policies are used to set mandatory or read-only fields on a form based on certain conditions.
C...
getXML, getXMLWait, and getXMLAnswer are different methods in ServiceNow for handling XML data.
getXML is used to retrieve XML data synchronously.
getXMLWait is used to retrieve XML data asynchronously.
getXMLAnswer is used to retrieve XML data and wait for a response.
Glide system objects are used in ServiceNow to interact with the platform and perform various operations.
GlideRecord
GlideSystem
GlideAggregate
GlideForm
GlideUser
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I applied via Recruitment Consulltant and was interviewed in Jul 2024. There were 2 interview rounds.
Factory & Builder Design Patterns are creational patterns used in software development to create objects.
Factory Design Pattern is used to create objects without specifying the exact class of object that will be created.
Builder Design Pattern is used to construct complex objects step by step.
Factory pattern uses a factory method to create objects, while Builder pattern uses a builder class to construct objects.
Factory ...
EPAM Systems interview questions for popular designations
I applied via Naukri.com and was interviewed in Jul 2024. There were 2 interview rounds.
call, apply, and bind are methods in JavaScript used to manipulate the context of a function.
call - calls a function with a given 'this' value and arguments provided individually.
apply - calls a function with a given 'this' value and arguments provided as an array.
bind - creates a new function that, when called, has its 'this' keyword set to the provided value.
Get interview-ready with Top EPAM Systems Interview Questions
I applied via Referral and was interviewed in Aug 2024. There were 4 interview rounds.
HashMap principles involve key-value pairs, hashing, and efficient retrieval.
HashMap stores key-value pairs using hashing for efficient retrieval.
Keys must be unique but values can be duplicated.
HashMap allows null keys and values.
HashMap is not synchronized, use ConcurrentHashMap for thread safety.
I applied via LinkedIn and was interviewed in Oct 2024. There was 1 interview round.
It was F2F interview , where the interviewer was very friendly and he was given a Excel sheet which need to answer few Excel related questions and another SQL querying intermediate to advance level .
I applied via Naukri.com and was interviewed in Aug 2024. There was 1 interview round.
I applied via Recruitment Consulltant
Find the 2nd duplicate element in an array, identify missing element in sequential array, and reverse a statement.
To find the 2nd duplicate element in an array, iterate through the array and keep track of elements using a hashmap.
To identify the missing element in a sequential array, calculate the sum of all elements and find the difference with the expected sum.
To reverse a statement, split the statement into words, r...
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The duration of EPAM Systems interview process can vary, but typically it takes about less than 2 weeks to complete.
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