DigiCall Teleservices Team Lead Interview Questions and Answers for Experienced

The OSI model is a conceptual model that describes how data is transmitted over a network.

• The model has 7 layers: Physical, Data Link, Network, Transport, Session, Presentation, and Application.

• Each layer has a specific function and communicates with the layers above and below it.

• The model helps ensure interoperability between different network devices and software.

• Example: When you send an email, the application layer...read more

A singleton is a design pattern that restricts the instantiation of a class to one object.

• Singleton pattern ensures that a class has only one instance and provides a global point of access to it.

• Commonly used in scenarios where only a single instance of a class is needed, such as database connections or logging.

• Leetcode Problem: Implement a Singleton Class - Design a class that has a method getInstance() which returns ...read more

The OSI model is a conceptual model that describes how data is transmitted over a network.

• The model has 7 layers: Physical, Data Link, Network, Transport, Session, Presentation, and Application.

• Each layer has a specific function and communicates with the layers above and below it.

• The model helps ensure interoperability between different network devices and software.

• Example: When you send an email, the application layer...read more