Persistent Systems Team Lead Interview Questions and Answers for Experienced

PSL stands out for its innovative culture, collaborative environment, and commitment to employee growth and client satisfaction.

• Innovative Culture: PSL encourages creative problem-solving, allowing teams to experiment with new technologies and methodologies.

• Collaborative Environment: Teams at PSL work closely together, fostering open communication and knowledge sharing, which enhances project outcomes.

• Employee Gro...read more

JVM is a virtual machine that executes Java bytecode. It manages memory, provides security, and facilitates garbage collection.

• JVM loads the bytecode generated by the Java compiler and interprets it.

• It uses Just-In-Time (JIT) compilation to improve performance by compiling frequently used code into native machine code.

• JVM manages memory through garbage collection, freeing up memory occupied by objects that are no ...read more

Stereo annotation is the process of labeling or tagging images or videos with depth information to create a 3D effect.

• Stereo annotation involves identifying corresponding points in a pair of images or frames to determine depth perception.

• It is commonly used in computer vision tasks such as object detection, tracking, and scene understanding.

• Examples of stereo annotation include creating depth maps for autonomous d...read more

Hash Map is a data structure that stores key-value pairs and uses a hash function to map keys to their corresponding values.

• Hash Map uses a hash function to determine the index of the key-value pair in the underlying array.

• Collisions can occur when multiple keys hash to the same index, which can be resolved using techniques like chaining or open addressing.

• Hash Map provides constant time complexity O(1) for insert...read more

Overloading is having multiple methods with the same name but different parameters. Overriding is having a method in a subclass with the same name and parameters as in the superclass.

• Overloading is compile-time polymorphism while overriding is runtime polymorphism.

• Overloading is used to provide different ways of calling the same method while overriding is used to provide a specific implementation of a method in a ...read more