Distributed Systems (2) Flashcards
Name all 7 types of Distributed Systems.
1) Decentralised stand-alone system
2) Host based hierarchy
3) Peer to Peer
4) Hybrid enterprise wide
5) Internet based systems
6) Client Server Systems
7) Cloud Systems
Describe the distributed systems:
- Decentralised Stand Alone System
- Host Based Hierarchy
- Peer-to-Peer
Decentralised Stand Alone System:
- Systems do not react together AT ALL.
- Cannot Support complex business processes efficiently.
Host Based Hierarchy
-Master computer and multiple slave computers design. (One Systems has control over multiple other systems.
Peer-to-Peer
- All Systems run on same network.
- Ideal when few machines involved as performance deteriorates with each additional machine added.
Describe the distributed systems:
- Hybrid Enterprise Wide
- Internet BASED systems
- Client Server Systems
Hybrid enterprise wide:
- Mixed approach of newer systems and legacy systems on a large scale basis.
- Think a system of Slave-Master-masters master etc.
Internet BASED System:
- Client Server approach, basis for cloud systems and web services.
- Its based.
Client Server Systems:
-Splits the workload between client (computer making request) and the server (computer answering the request).
Define FRIENDS
no actually just define the broad concept of a Distributed System.
A system where processes and other aspects of the business model are not centralised in the one place.
Describe some advantages and disadvantages of a distributed system in general.
Advantages:
- Improved reliability as an issue with one server won’t after the other servers.
- Increased scalability as more Systems can be added to the network as needed.
- High performance, the fact that multiple computers and systems are used in the one network provided high performance and efficiency levels.
Disadvantages:
- Loss of centralised setting and control.
- Complex networking software needed.
- Requires strong coordination in order to fully utilise the potential of each system on the network.
