A distributed system consists of multiple autonomous computers that are linked through software to appear as a single integrated system. Distributed systems have several desirable features including resource sharing, concurrency to allow multiple users simultaneous access, openness through public specifications, transparency so users are unaware of remote resources, scalability to grow by adding computers, and fault tolerance to continue functioning if components fail. Examples of distributed systems include the internet, university computing centers, and ATM networks.

1. Distributed SystemDistributed System
IntroductionIntroduction

2. Distributed System
A distributed system consists of multiple
autonomousautonomous computers that are linked
and that can—through software—give the
appearance of being a single, integrated
computer system. The individual computers
may be parts of a local, wide, or global area
network.
Distributed System

3. Examples of distributed systems abound,
including the Internet, various University
computing centres, and ATM (automatic
teller machine) networks.

4. Distributed Systems

5. Several features and capabilities are
considered desirable for distributed
systems include:
- Resource sharingResource sharing. This refers to
the ability for users to share hardware
(e.g. peripherals), application software
(e.g., groupware), or data (e.g., reference
materials).
Features of Distributed Systems

6. -ConcurrencyConcurrency
Refers to the fact that multiple users may be
requesting or accessing system resources at
the same time. Ideally, processors should be
able to deal with multiple users simultaneous
Distributed system automatically demonstrate
concurrency each time two or more users do
things at the same time on their own machine
Features of Distributed Systems

7. -OpennessOpenness
An open system is one for which
specifications and interfaces have been
made public, so that developers can create
products for the system.
An open system can easily handle new
hardware or software configurations
because there are officially accepted
specifications.
Features of Distributed Systems

8. -TransparencyTransparency
Refers to the fact that a user doesn’t need to
know that different resources being used may
be scattered all around the world.
For the user, there should be no significant
difference between requesting a local
resource and one at some remote location.
Features of Distributed Systems

9. - Scalability- Scalability
Refers to the ability of the system to grow—
for example, through the addition of new
computers or by the creation of
internetworks.
When a distributed system grows, certain
information may need to be duplicated at
multiple locations in order to maintain the
efficiency of the original, smaller system.
Features of Distributed Systems

10. - Fault toleranceFault tolerance
Refers to the system’s ability to continue
functioning after one or more components
become unavailable because of either
hardware or software failure.
Features of Distributed Systems

11. In a fault tolerant system, a software
failure will affect only the process or
processes that failed.
Features of Distributed Systems

12. ……Thank You…Thank You…
ConclusionConclusion