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

What does the insert statement in extract datasets do, What does the insert...

What does the insert statement in extract datasets do? It describes the fields of a field group.

Test a system though there is no documentation available, You need to test ...

You need to test a system though there is no documentation available and developers who developed it don't work there anymore. What would you do? - We will perform exploratory

Define a class diagram with example, Q. Define a Class diagram with example...

Q. Define a Class diagram with example? Class diagram: A class diagram in the UML (Unified Modelling Language) is a type of static structure diagram that describes the struct

How abstraction used in stepwise refinement, Q. How Abstraction used in ste...

Q. How Abstraction used in stepwise refinement? Abstraction:- Abstraction permits one to concentrate on a problem at some level of generalization without regard to irrelevant l

Explain rad model, RAD Model Rapid Application Development Model is...

RAD Model Rapid Application Development Model is the part of incremental model. Achieves the high speed development using component based construction. Phases

Explain v- diagram, Normal 0 false false false EN-IN ...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Structured analysis - software engineering, Structured Analysis Model ...

Structured Analysis Model Structured  analysis is  the  most  broadly  used  of  needs  modeling  techniques,  relies  on  flow modeling and data modeling to build the basis f

Explain cyclomatic complexity, What is cyclomatic complexity? Cyclomati...

What is cyclomatic complexity? Cyclomatic complexity is given by McCabe. The general formula to compute cyclomatic complexity is M=V (G)=E - N + 2P Where E-Number of e

Explain dynamic and static metrics, Dynamic and static metrics Dynamic ...

Dynamic and static metrics Dynamic metrics are closely related to software quality attributes It is relatively easy to measure the response time of a system (performance

Importance of a document type definition in xml, Question: (a) Describe...

Question: (a) Describe the purpose and importance of a Document Type Definition in XML. (b) Describe the difference between PCDATA and CDATA with respect to a DTD. (c)

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