Linearizability and sequential consistency, Software Engineering

Assignment Help:

QUESTION - Fault Tolerance

(a) Three computers together provide a replicated service. The manufacturers claim that each computer has a mean time between failure of five days; a failure typically takes four hours to fix. What is the availability of the replicated service?

(b) In the gossip architecture, why does a replica manager need to keep both a ‘replica' timestamp and a ‘value' timestamp?

(c) Explain the difference between linearizability and sequential consistency, and why the latter is more practical to implement, in general.

(d) Explain why allowing backups to process read operations leads to sequentially consistent rather than linearizable executions in a passive replication system.


Related Discussions:- Linearizability and sequential consistency

#title., Ask EXPLAIN GENERIC PROCESS MODEL & REQUIREMENT ENGINEERING PROCE...

Ask EXPLAIN GENERIC PROCESS MODEL & REQUIREMENT ENGINEERING PROCESSquestion #Minimum 100 words accepted#

Use case realization, Develop a domain model for the Case Study. Express yo...

Develop a domain model for the Case Study. Express your model with a class diagram, showing any inheritance and compositional relationships. For each of the two selected most es

Describe briefly the idea behind the gqm paradigm, Problem: (a) Define ...

Problem: (a) Define measurement and briefly summarize the representation condition for measurement. (b)  Software metrics is a term that embraces many activities, all of whi

How the restructuring helps in maintaining a program, The restructuring hel...

The restructuring helps in maintaining a program in the following ways:        (a) Programs have higher quality, good documentation, less complexity, and conformance to modern

Define the drivers and stubs, Write about drivers and stubs. Drivers an...

Write about drivers and stubs. Drivers and stub software has to be developed to test incompatible software. The " driver" is a program that accepts the test data and prints

Explain the meaning of throw away prototyping, What is meant by Throw away ...

What is meant by Throw away Prototyping? Giving the user a system which is incomplete and then augmenting and modifying it so that user requirements become clear. The obj

Illustrate the concept of a software bus in corba, QUESTION (a) Illustr...

QUESTION (a) Illustrate the concept of a software bus in CORBA (b) Taking an example of your own, explain how component-based software engineering can allow very rapid softw

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd