Characterisation of Distributed Systems: Lecture 1

Question 1

Main Implications of Distributed Systems

Answer 1

1) Concurrency
2) No Global Clock
3) Independent Failures

Question 2

What could go wrong? ATM example.

Answer 2

1) Amount deducted, then Server crashes.
2) Amount deducted, Server sends ok message to Client (ATM) but message was lost
3) ATM crashes after sending request to withdraw money.

Question 3

Distributed Systems Challenges

Answer 3

HSSFT

1) Heterogeneity
2) Scalability
3) Security
4) Failure Handling
5) Transparency