DISTRIBUTED SYSTEMS

Instruction per Week : 4 Hrs Sessionals : 20
Duration of Examination: 3 Hrs Univ.Exam : 80

UNIT - I

Distributed Systems - definition, goals, hardware concepts, software concepts, client-server model.
Communication - Layered protocols, RPC, Remote object invocation, Message oriented communication, Java RMI.

UNIT - II

Processes-threads, clients, servers, code migration, software agents.
Naming - Naming entities, locating mobile entities, removing unreferenced entities.
LDAP, JNDI.
Distributed transactions.

UNIT - III

Consistency and replication - introduction, data centric consistency models, client centric consistency models, distributed protocols, consistency protocols.
Fault tolerance - Introduction, process resilience, reliable client-server communication, reliable group communication, distributed commit, recovery.

UNIT - IV

Security - Introduction, Secure channels, access control, security management, electronic payment systems.
Distributed Object based systems - CORBA, DCOM, EJB.

UNIT - V

Distributed File Systems - NFS, CODA
Distributed document-based systems - WWW.Lotus notes.
Distributed coordination based systems - Introduction, JINI.

Suggested Reading:

1. Andrew S Tanenbaum, Maarten Van Steen - “Distributed Systems - Principles and Paradigms”, Pearson 2002.