What is the most important aspect of a distributed system?

• Resource Sharing

• Communication

• Concurrency

• Recovery from Failure

What is the primary use of distributed systems?

• Communication

• Sharing Resources

• Networking Computers

• Cloud Computing

Which search engine handles the most web searches?

• Bing

• Yahoo

• Google

• Duck Duck Go

What challenges to MMOs present to distributed systems?

• Need for security

• Need for fast response times

• Ability to support multiple users

• Real-time propagation of events

Which architecture uses a centralised server?

• Client-Server

• Peer-to-Peer

• Cluster

What advantage does the cluster architecture have over client-server?

• It is more secure

• It is more responsive

• It is easily extensible

• It ensures consistency

What is the main role of a firewall?

• To prevent unauthorised messages entering or leaving a network.

• To protect local area networks from hackers

• To prevent unauthorised access to computers

• To protect local area networks from viruses

What is a 'cloud'?

• A set of Internet-based applications

• A set of storage services

• A set of computing services to support users

• All of the above.

What is a server?

• A powerful computer in a data centre

• Any computer that accepts and responds to requests from clients

• A program that provides services for clients

• A program that makes requests for services

What is remote invocation?

• When a client contacts a server

• When a server provides a response

• When the client receives the response

• All of the above