UltraTech Cement Interview Questions and Answers

Yes, I have worked on Telecom domain in my previous role.

• I have experience developing software solutions for telecom companies to improve network performance and customer experience.

• I have worked on projects involving billing systems, network management, and customer relationship management.

• I have knowledge of telecom protocols such as SIP, VoIP, and SS7.

• I have collaborated with telecom engineers to integrate software solutions with telecom infrastructure.

Callable interface can return a result and can throw a checked exception, while Runnable interface cannot return a result or throw a checked exception.

• Callable interface is a part of java.util.concurrent package, while Runnable interface is a part of java.lang package.

• Callable interface has a method call() that returns a result and can throw a checked exception, while Runnable interface has a method run() that does not return a result or throw a checked exception.

• Callable int...read more

JPA is a Java ORM framework that allows developers to interact with databases using object-oriented programming.

• JPA stands for Java Persistence API

• It provides a set of Java classes and interfaces for managing relational data

• JPA queries can be written using JPQL (Java Persistence Query Language)

• JPA supports various annotations like @Entity, @Table, @Id, @Column, etc.

• JPA can be used with different ORM frameworks like Hibernate, EclipseLink, etc.

Implement producer consumer problem using code

• Use a shared buffer to store data produced by producer and consumed by consumer

• Implement synchronization mechanisms like mutex or semaphore to control access to the buffer

• Ensure proper handling of buffer full and buffer empty conditions to avoid race conditions

I will tackle escalations by first understanding the issue, prioritizing tasks, communicating effectively, and seeking help from senior team members if needed.

• Understand the root cause of the escalation

• Prioritize tasks based on urgency and impact

• Communicate effectively with stakeholders

• Seek help from senior team members if needed

Communication between microservices is typically done through APIs, message queues, or event-driven architecture.

• Use RESTful APIs for synchronous communication between microservices

• Implement message queues like RabbitMQ or Kafka for asynchronous communication

• Utilize event-driven architecture with tools like Apache Kafka or AWS SNS/SQS

• Consider gRPC for high-performance communication between microservices

Deadlock is a situation in which two or more processes are unable to proceed because each is waiting for the other to release a resource.

• Occurs in multitasking environments

• Caused by a circular wait condition

• Can be resolved using techniques like deadlock prevention, deadlock avoidance, and deadlock detection

• Example: Process A holds Resource 1 and waits for Resource 2, while Process B holds Resource 2 and waits for Resource 1

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 maps have O(1) average time complexity for insertion, deletion, and lookup operations.