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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.
Problem 1. Explain different roles of the software development? 2. What is conflict management? Explain various causes for conflict 3. What is COCOMO? Explain COCOMO mode
Marketing and Sales (M/S) is the focal point of many of Hawkins Cookers Ltd, because they are responsible for selling the company's product (a) Consider you are the Chief Inform
The act of attempting to verify the cause of the symptoms of malfunctions noticed by testing or by frenzied user complaints.
State about the Software Requirements Specification This document is produced as output of requirement analysis. Requirement analysis involves obtaining a clear and thorough
Testing is a process of implementing a program with the intent of finding an error. Various level of testing are : Unit Testing Integrating testing Valida
QUESTION - Name Services (a) Illustrate with help of a diagram the results of a DNS lookup and an ARP lookup assuming we are using IPv4. (b) Why do DNS root servers hold en
How do stubs and drivers are related to manual testing? - Drivers and stubs are a part of incremental testing. - The two different techniques used in incremental testing are
algorithums
Cohesion for Each Module? Compute average daily temperatures at various sites Initialize sums and open files Create new temperature record Store temperature record Close files and
What are the advantages and disadvantages of size measure? Advantages: Artefact of software development which is simply counted. Many existing methods use LOC as a key input. A
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