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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.
How to compute the cyclomatic complexity? The cyclomatic complexity can be computed by any one of the following ways. 1. The numbers of regions of the flow graph correspond
create a class rectangle
DMA data transfer The position of the DMA controller between the other components in a computer system. The CPU communicates with the DMA by the address and data buses as with
What is software metric? A Software metric is a easy quantitative measure derivable from any attribute of the software life cycle (E.g.) LOC (Line Of Code) Function poin
Define Brooks law. Software was delivered late, was defective, cost several times the original estimates and often showed poor performance characteristics.
Define about the Integration testing - This test is performed to verify interfaces between system components, interactions between application and file system, hardware and ot
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
Define Behavioural Modelling. The state transition diagram shows the characteristics of a system by depicting its states and the events that cause the system to change state
hello, i am struggling with my final year project and i dont have that huge amount of time to do it??
Q. Define Object and class associations? Object/class associations:- Objects/classes interact with each other. Multiplicity defines how many instances of one object/class can
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