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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.
main characteristics of software lease
What are the approaches of integration testing? The integration testing may be performed using two approaches. 1. The non-incremental testing. 2. Incremental testing.
REVERSE ENGINEERING :- It is a process of examining software with a view to understanding its design and specification. In this, source code and portable code are the input
What are the common activities in design process? i. System structuring - The system is subdivided into principle subsystems components and communications among these subsystem
Q. Define a Class diagram with example? Class diagram: A class diagram in the UML (Unified Modelling Language) is a type of static structure diagram that describes the struct
Configuration Management: Because of several reasons, software changes during its life cycle. As a result of the changes made, many versions of the software exist at one time.
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
functional and non functional reuirement
Question: (a) Show two main approaches to identify risk in a project. (b) John finds that IOE recovers some overheads as oncosts on direct staff costs although others are
Construct an E-R Diagram for the application described on the next page. Include any additional assumptions you made about the application requirements. The assumptions may not dir
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