1) describe threats and attacks in distributed system in detail.

2) Describe cryptography and the uses of cryptography.

3) prepare detailed on:

i) Authentication

ii) Digital signature

4. Describe in detail:

i) certificates

ii) Fire walls

5) prepare detailed on:

i) Blocks ciphers

ii) Stream ciphers.

6) Describe the basic model for the management of replicated data.

7) Describe group communication and its services.

8) Describe passive replication model for fault tolerance in detail.

9) Describe active replication model in detail.

10) Describe architectures for replicated transaction in detail.