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 is execution, What is Execution Ans) The process of a computer gett...

What is Execution Ans) The process of a computer getting out an instruction or instructions of a computer. Exhaustive Testing: Implementing the program with all possible combina

Explain smoke testing, Smoke testing It decreases the integration risk....

Smoke testing It decreases the integration risk. Error diagnosis and correction are simplified

Test questions, Dear Sir/ Madam I have some remaining test questions need ...

Dear Sir/ Madam I have some remaining test questions need to be answered, from yesterday''s test bank can I get a solution please? Regards John

Explain the traces debugging method, Q. Explain the Traces debugging method...

Q. Explain the Traces debugging method? Traces:-Printout contains merely certain memory and register contents and printing is conditional on some event occurring. Typical condi

Decomposed the system into several subsystems, Question: (a) With refe...

Question: (a) With reference to component communication, explain the differences between interface oriented and message oriented communication in terms of communication method

What is fault tree analysis, What is Fault Tree Analysis? Ans) A form of...

What is Fault Tree Analysis? Ans) A form of safety examines that assesses hardware safety to give failure statistics and sensitivity analyses that point to the possible effect o

When do you choose automated testing over manual testing, When do you choos...

When do you choose automated testing over manual testing? Automation is chosen when -A similar set of tests need to be repeated again and again -When a single test requi

Cocomo 81 estimation model, You are preparing a bid for a refinery control ...

You are preparing a bid for a refinery control system for Australian Petroleum Ltd (APL) using the CoCoMo 81 estimation model. You are familiar with industrial control system softw

The spiral model of software development, The spiral model of software deve...

The spiral model of software development Contains project risks evaluation during every iteration

Determine the meaning of vertical partitioning, Determine the meaning of ve...

Determine the meaning of vertical partitioning? Vertical partitioning often called factoring suggests that the control and work should be distributed top-down in program struct

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