Cognizant Associate Engineer Interview Questions and Answers

Maths question on probability

Q1. Difference between String and Stringbuffer
Ans. 
String is immutable, StringBuffer is mutable in Java.
• String is immutable, meaning once created, it cannot be changed. StringBuffer is mutable, allowing for modifications.

• String concatenation creates a new String object each time, while StringBuffer allows for efficient string manipulation.

• StringBuffer is synchronized, making it thread-safe, while String is not.

• Example: String str = "Hello"; StringBuffer sb = new String...read more
Answered by AI
Add your answer
Q2. Difference between map and hashmap
Ans. 
HashMap is a specific implementation of the Map interface in Java.
• Map is an interface in Java that represents a mapping between a key and a value.

• HashMap is a class in Java that implements the Map interface.

• HashMap allows null values and one null key, while Map does not allow null keys.
Answered by AI
Add your answer

Q1. Strength and weakness
Add your answer
Q2. Why you want to join this company
Add your answer

Q1. Can you tell me about yourself?
Ans. 
I am a recent graduate with a degree in Mechanical Engineering and a passion for problem-solving and innovation.
• Recent graduate with a degree in Mechanical Engineering

• Passionate about problem-solving and innovation

• Experience with CAD software such as SolidWorks

• Completed internships at engineering firms
Answered by AI
Add your answer
Q2. Your strength
Ans. 
My strengths include problem-solving skills, attention to detail, and strong technical knowledge.
• Strong problem-solving skills - I am able to analyze complex issues and come up with effective solutions.

• Attention to detail - I pay close attention to the specifics of a task to ensure accuracy and quality.

• Strong technical knowledge - I have a solid understanding of engineering principles and tools, allowing me to excel in...read more
Answered by AI
Add your answer

Q1. Apex trigger scenarios
Add your answer
Q2. Lwc question on custom permission
Ans. 
Custom permissions in LWC control access to components based on user permissions.
• Custom permissions are defined in Salesforce Setup under 'Custom Permissions'.

• They can be assigned to profiles or permission sets to control access.

• In LWC, use 'getCustomPermission' from 'lightning/uiRecordApi' to check permissions.

• Example: If a user has a custom permission 'ViewReports', you can conditionally render components based on th...read more
Answered by AI
Add your answer
Q3. Aura component question on return
Ans. 
Understanding return values in Aura components is crucial for effective component communication.
• Aura components can return values using events or attributes.

• Example: Use 'component.set('v.attributeName', value)' to set an attribute.

• Events can be used to communicate between components; use 'component.getEvent('eventName').fire()' to trigger an event.

• Return values can be handled in the controller or helper methods for fu...read more
Answered by AI
Add your answer

Q1. Java Automation
Add your answer

Great and easy full of learning

Q1. Few question on Camunda Framework.
Add your answer

Q1. Few HR questions and salary discussion.
Add your answer