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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.
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 is quality? Quality, simplistically, means that a product should meet its requirement. This is problematical for software systems. There is a tension among custom
State the System Engineering Hierarchy The world view is made up of a set of domains (Di),which can either be a system or a system of systems. WV = {D1,D2,D3,...........,Dn
Define capability. What are the quantities that determine the degree of capability of a software reliability model? Capability refers to the ability of the model to calculate w
Hardware Requirements: INMAGIC Plus software package requires the following computer configuration: i) Micro : IBM PC or compatible with a minimum 640 K RAM. ii) Ope
Q. Illustrate the Features of function count? Features:- Function point goes forward is independent of the language tools or methodologies used for implementation.
State Entity and relationship diagram. ERD depicts linkage between data objects. The ERD is the notation that is used to execute the data modelling activity. The primary
Formal testing, usually conducted by the developer for the consumer, to demonstrate that the software meet its described requirements.
Advantage of microcomputer software packages: i) compilation and maintenance of reference and fact files; ii) compilation of current and retrospective bibliographies
I am working on DD development project and I am using 475 field communicator for testing DD. While development of DD, I tested DD with SDC 625 PC application using HART modem. I h
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