Quiz on Distributed System Models

What are the three ways in which distributed system design can be effectively communicated?

• Abstract Models, Concrete Models, Hybrid Models

• Hardware Models, Software Models, Network Models

• Physical Models, Architectural Models, Fundamental Models

• Logical Models, Architectural Models, Middleware Solutions

What do physical models of distributed systems capture?

• Middleware solutions and architectural patterns

• Computational elements and communication tasks

• Hardware composition and interconnecting networks

• Abstract perspective of a distributed system

Which generation of distributed systems emerged in the 1990s with an extensible set of nodes interconnected by a network of networks?

• Internet scale distributed systems

• Early distributed systems

• Contemporary distributed systems

• Future distributed systems

What is the purpose of architectural models in distributed systems?

• To define the physical infrastructure of the system

• To lay a foundation for understanding different architectural models

• To provide security to the distributed system

• To manage the middleware solutions

What is the role of threads in a distributed system from a system-oriented perspective?

• Threads are individual machines or devices in a distributed system

• Threads are smaller units of a process that can be executed concurrently within the same process

• Threads are instances of a program that is being executed

• Threads are endpoints of communication

What is the key technique of indirect communication in distributed systems?

• Message passing primitives

• Socket programming

• Remote Procedure Call

• Group communication

Which architectural style describes a distributed system where all processes play similar roles and interact cooperatively as peers?

• Client-Server architecture

• Brokerage pattern

• Peer-to-Peer architecture

• Layered architecture

What is the purpose of the Layering architectural pattern in distributed systems?

• To provide recurring structures that work well in certain circumstances

• To provide a convenient programming model to application programmers

• To organize functionality in a given layer and place it onto appropriate servers

• To partition a complex system into layers of abstraction

What is the primary technique used for securing communication channels in distributed systems?

• Reflection pattern

• Authentication

• Cryptography

• Shared secrets

What is the main threat to processes in distributed systems related to message sources?

• Lack of reliable knowledge of the source of a message

• Arbitrary failures of processes

• Omission failures of processes

• Timing failures of processes