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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.
In virtual storage systems, virtual addresses are allocated to auxiliary storage locations. The use of virtual addresses permit those locations to be accessed as by they were part
Classify the below techniques into dynamic or static. i. Data Flow Analysis. ii. Use Case Testing. iii. Equivalence Partitioning. iv. Exploratory Testing. v. Inspec
What happens when GUI maps are loaded? When a GUI map is loaded following things take place: - All object logical names, window information and physical descriptions gets lo
When is RTM (Requirement traceability matrix) prepared - after or before test case designing? - RTM is prepared before test case designing. - Requirements must be traceable
Class A class is a template that states the properties of objects. Classes have an interface which having of the operation, a body which executes the operations and instance va
A program is to be developed to simulate the operations of a scientific calculator. List the facilities to be provided by this calculator. Analyze this using a DFD 0 - level and 1
Define Software Lifecycle. Software Lifecycle is the time period beginning with the idea for a Software product ending whenever the Software is unavailable for use. SLC = SL
Define software process. Software process is explained as the structured set of activities that are needed to develop the software system.
QUESTION - RMI (a) Figure illustrates an RMI communication. Describe the role of each component in the RMI. (b) Explain the ter
Q. A program is to be developed to simulate the operations of a scientific calculator. List the facilities to be provided by this calculator. Analyze this using DFD? Level 0
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