Cigniti Technologies Trainee Interview Questions and Answers

Q1. Java hash map and how it works
Ans. 
Java hash map is a data structure that stores key-value pairs and uses hashing to efficiently retrieve values based on keys.
• HashMap in Java implements the Map interface and allows null keys and values.

• It uses hashing to store and retrieve key-value pairs, providing O(1) time complexity for get() and put() operations.

• Example: HashMap map = new HashMap<>(); map.put("key", 1); int value = map.get("key");
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Q1. Basic java, rest assured api
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Basic java programming

Q1. Depth automation testing related question
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Q1. Salary discussion
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Q1. Difference between deep and shallow copy
Ans. 
Deep copy creates a new object and recursively copies all nested objects, while shallow copy creates a new object and copies the references to nested objects.
• Deep copy duplicates all levels of the object hierarchy, ensuring that changes in the copied object do not affect the original object.

• Shallow copy only duplicates the top-level object, so changes in the copied object may affect the original object.

• Deep copy is mor...read more
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Q2. Ways to set values in form groups
Ans. 
Ways to set values in form groups
• Use setValue() method to set values in form groups

• Use patchValue() method to set values in form groups

• Use reset() method to set values in form groups
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Q3. How to add dynamic component in view
Ans. 
To add a dynamic component in a view, use a framework or library that supports dynamic rendering and component creation.
• Use a framework like React or Angular that allows for dynamic component creation

• Create a component factory or use a component resolver to dynamically create and render components

• Pass data or props to the dynamic component to customize its behavior

• Update the view or component tree to include the dynami
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Q1. All Concurrent Utility Classes and their uses.
Ans. 
Concurrent Utility Classes provide support for concurrent programming in Java.
• ConcurrentHashMap: Thread-safe implementation of Map interface.

• CopyOnWriteArrayList: Thread-safe implementation of List interface.

• CountDownLatch: Synchronization aid that allows one or more threads to wait until a set of operations being performed in other threads completes.

• Semaphore: Controls the number of threads that can access a shared re...read more
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Q2. Basic SQL queries, mostly from Joins, Grouping
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Q3. Core Java, Java 8
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Q1. Power BI DAX calculations
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Q1. RLS Implementation
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