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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.
Define Data Flow Diagram. A Data flow diagram is a graphical description that depicts information flow & the transforms that are applied as data move from input to output. T
List flaws in waterfall model. - The biggest drawback is that you don't test the application logic until very late in development cycle. - Though a detailed system specifica
Configuration management (CM) covers the tools and procedure used to control, coordinate and track code, needs, documentation, problems, change requests, designs, tools, compilers,
Determine in verify about CAPABILITY MATURITY MODELS In this model anapproach for improving Software process is devised. It isn't concerned which life cycle modeis followed for
What can be main reasons for a bug not being to reproduce? What must be done if such a bug is found? A bug can't be reproduced for below reasons: 1. Low memory. 2. Things
Question: a) A firewall will be classified according to which layer of the OSI model the protection is at. Using this classification, explain the different types of firewalls.
What are the two levels of testing? i. Component testing Individual components are tested. Tests are derived from developer' s experience. ii. System Testing The group
Q. Differentiate between ISO and CMM? Ans) The difference between CMM and ISO are as follows :- - ISO 9000 is awarded by an international standards body. Thus, ISO 9000 cert
solve inequalities and graph the solutions: [z/25-1]
What is cycle stealing DMA operation? Cycle Stealing: In this process, the DMA controller transfers one data word at a time, after which it must return control of the buses to
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