Distributed Objects and Remote Invocation

What is a distributed object in a distributed computing environment?

• An object that can only exist on a single machine

• An object that can exist on multiple machines and communicate over a network

• An object that is not used in distributed systems

• An object that is stored in a distributed database

What is a "Middleware" in distributed systems?

• A software component that mediates communication between distributed objects

• A database management system

• A client-side proxy

• A naming service

Which technology is commonly used for remote method invocation in Java?

• REST

• SOAP

• RMI (Remote Method Invocation)

• CORBA (Common Object Request Broker Architecture)

 

In CORBA, what is an Object Request Broker (ORB)?

• A middleware component for object communication

• A naming service for distributed objects

• A client-side proxy for a remote object

• A server that processes remote method calls

What is the primary advantage of using a distributed object model?

• Improved security

• Reduced network overhead

• Better performance

• Simplified programming

In RMI, what is a remote interface?

• An interface that defines remote methods that can be invoked on a remote object

• An interface that must be implemented by all local objects

• An interface used for GUI design

• An interface for defining database connections

What is the primary purpose of IDL (Interface Definition Language) in distributed systems?

• To define user interfaces for web applications

• To specify the interfaces and data structures for remote procedure calls

• To describe the physical layout of a network

• To encrypt communication between distributed objects

What is the purpose of serialization in remote method invocation?

• To convert an object into a byte stream for network transmission

• To ensure that objects cannot be remotely accessed

• To optimize the performance of remote method calls

• To compress data for network transfer

Which of the following is a disadvantage of using distributed objects in a system?

• Easier scalability

• Improved fault tolerance

• Reduced network latency

• Complexity in object synchronization

Which technology allows objects to communicate in a language-independent manner in distributed systems?

• Java RMI

• SOAP

• CORBA

• REST