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

Determine the concept of concurrency, Determine the concept of Concurrency ...

Determine the concept of Concurrency The basic concept in computer programming is concept of handling more than one task at a time. Many programming problems need that the pro

Explain test archiving systems, Q. Explain Test archiving systems? Tes...

Q. Explain Test archiving systems? Test archiving systems: the goal is to keep follow of series of tests ant to act as the basis for documenting that the tests have been done

What is failure-directed testing, What is Failure-directed Testing Ans) ...

What is Failure-directed Testing Ans) Testing based on the information of the types of errors made in the earlier period that are likely for the system under test.

How can we use spiral model in large-scale systems, Q. How can we use Spira...

Q. How can we use Spiral model in large-scale systems? Spiral model is as well known as spiral life cycle model is the system development life cycle model utilized in informati

What does it mean by business process engineering tools, What does it mean ...

What does it mean by business process engineering tools ?

What is path analysis, What is Path Analysis? Ans) Program analysis perf...

What is Path Analysis? Ans) Program analysis performed to identify all possible paths through a program, to detect incomplete paths, or to discover portions of the program that

Discuss in detail about structural modeling, Discuss in detail about Struct...

Discuss in detail about Structural Modeling. Structural model includes a detail refinement of ERD, data flow model and control flow model. Creating an ERD. For example

Explain equivalence class partitioning, Q. Explain Equivalence Class Partit...

Q. Explain Equivalence Class Partitioning ? Equivalence Class Partitioning : It is a method in black box testing. It is designed to reduce the number of test cases by dividing

Explain the steps used in in system analysis, Question 1 A) If you are a s...

Question 1 A) If you are a software engineer you must be expert in the field of hardware, software  and also database. It has been listed by the industry professionals that time a

Define equivalence class, Equivalence class: -It shows a set of valid or in...

Equivalence class: -It shows a set of valid or invalid states for input conditions. An input condition is either a particular numeric value, a range of values, a set of related val

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