Subjects included in Mid Term Exam

1
Subjects included in Mid -Term Exam

• Introduction
• Differences between DS, parallel and Networks.
• Types of parallel systems.
• Components of Distributed systems.
• Layers DS.

2
Introduction(Cont.)

• Client and server processes.
• Duties of Clients and Servers.
• Open systems (software,hardware and users).
• Features of open systems.
• What does availability means in DS?
• transparency ?
• Differences between Concurrent, time sharing and
  Distributed processes.
• In how many different applications we need
  transparency.

3
Internetworking

• Differences between different Network
  Tropologies.
• Ethernet Packets
• Packet Broadcasting.
• Packet Design.
• Collisions.
• Synchronous and Asynchronous transfer mode.

4
Communication between co-operating Processes

• Client-Server communication
• Group Communication.
• Reliable and unreliable communications.
• Design of data blocks.
• Marshalling and unmarshalling.
• Blocked and unblocked communications.
• Types oF Request-Replay protocols(R,RR,RRA)

5
Communication(Cont.)

• TCP/ IP functions
• Timeouts
• Distract Duplicate messages.
• Lost reply messages.
• History.

6
Remote Procedure Calling

• Failures Classes.
• Server Crashes.
• Client Crashes.
• Group Communications.
• 10 steps in RPC.
• Byzantine Agreement

7
Replications

• Availability options.
• Transparency.
• Consistency.
• Ordering.
• Duplication Trade-offs.
• Causality.
• Replica Architectures.