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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.
1. McM Cog is a supplier of industrial parts. Most orders are received at a call center. The call center currently has 10 phone lines total, i.e., a maximum of 10 callers may b
What is function point? Function point measures the functionality from the user point of view, that is, on the basis of what the user request and receives in return. Therefore
State the term- Code Coverage This is an analysis method that determines which parts of software have already been covered by test case suite and which are remaining.
Q. Explain Basic Execution Time Model? The model was developed by the J.D. MUSA in 1979(MUSA79) and is based on execution time. It is presumed that failures may occur according
Describe Operational Testing? Ans) Testing done by the end user on software in its normal operating environment.
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)
A selection method in which test data are chosen to lie along "boundaries" of the input domain [or output range] classes, data structures, procedure parameters, etc. Choices often
What is the value of a testing group? How do you justify your work and budget? Testing is a method used for revealing defects in s/w and for establishing that the s/w has attai
Q. Important issues related to SRS? (a) System goals as well as requirements are different- Goal is a more general characteristics. For example Whole system must be designed in
Q. Compute the McCobes cyclomatic complexity? (i) compute the McCobe's cyclomatic complexity (ii) Find out independent path Ans (i) Cyclomate complexity V (
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