ServiceNow Developer interview questions focus on platform knowledge, scripting, workflows, integrations, and customization within the ServiceNow ecosystem. Here are 25 commonly asked ServiceNow Developer interview questions with answers to help you prepare effectively.
Q1. What is ServiceNow?
ServiceNow is a cloud-based platform designed for IT Service Management (ITSM), automating business processes through workflows and providing service management across an enterprise.
Q2. What are the key features of ServiceNow?
Key features include workflow automation, incident management, change management, problem management, asset management, and a customizable service catalog.
Q3. What is a ServiceNow instance?
A ServiceNow instance is a single copy of the ServiceNow platform running in the cloud, isolated for a customer with its own data and configuration.
Q4. What scripting languages are used in ServiceNow?
ServiceNow primarily uses JavaScript for client-side, server-side scripting, and Glide API calls.
Q5. What is GlideRecord?
GlideRecord is a server-side JavaScript class used to perform database operations like queries, updates, inserts, and deletes in ServiceNow.
Q6. What are Business Rules in ServiceNow?
Business Rules are server-side scripts that execute when database operations occur (insert, update, delete, or query) to enforce business logic.
Q7. What are Client Scripts?
Client Scripts run in the user’s browser and are used to manage forms and fields behavior on the client side, such as form validation and field visibility.
Q8. What is a GlideAjax?
GlideAjax allows asynchronous calls from client-side scripts to server-side scripts to fetch data without reloading the page.
Q9. What is a Workflow in ServiceNow?
A Workflow automates multi-step processes using drag-and-drop graphical interfaces and scripting to define task sequences and approvals.
Q10. What are Script Includes?
Script Includes are reusable server-side JavaScript classes or functions that can be called from other scripts to modularize code.
Q11. What is an Update Set?
An Update Set is a container used to capture customizations made in one instance and move them to another ServiceNow instance.
Q12. What are UI Policies?
UI Policies are rules to dynamically change the behavior of fields on a form, such as making fields mandatory, visible, or read-only based on conditions.
Q13. How do you handle error handling in ServiceNow scripts?
Error handling can be done using try-catch blocks in JavaScript and by checking conditions before executing operations.
Q14. What is the difference between a Business Rule and a Script Include?
Business Rules run automatically on database operations, while Script Includes are reusable code libraries called explicitly when needed.
Q15. What is a GlideSystem (gs) object?
The gs object provides utility functions like logging, getting user info, generating random numbers, and working with dates in server scripts.
Q16. What is Access Control in ServiceNow?
Access Control Rules (ACLs) restrict access to tables, records, and fields to control data security within the platform.
Q17. What is a Transform Map?
A Transform Map defines the mapping between source data fields and target ServiceNow table fields during data import.
Q18. How do you schedule a job in ServiceNow?
Using Scheduled Jobs (Scheduled Script Executions), you can run scripts automatically at defined intervals.
Q19. What is the difference between a UI Action and a UI Policy?
UI Actions add buttons or links to forms and lists to perform actions, whereas UI Policies dynamically change form fields behavior.
Q20. What is Scoped Application in ServiceNow?
Scoped Applications isolate customizations to a specific namespace, avoiding conflicts with global objects or other apps.
Q21. What are the different types of tables in ServiceNow?
Base tables, custom tables, and extension tables are types of tables used to store various kinds of data.
Q22. What is the use of the Service Catalog?
The Service Catalog is a user-friendly interface that allows users to request services, products, or information from IT or other business units.
Q23. What is a Dictionary Entry?
A Dictionary Entry defines the properties of a table column, such as data type, length, default values, and validation rules.
Q24. How do you debug scripts in ServiceNow?
Using the JavaScript Debugger, gs.log statements, and the browser console to inspect client scripts.
Q25. What is Event Management in ServiceNow?
Event Management processes events from monitoring tools, correlates them, and generates alerts for IT operations management.