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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.
Question: (a) (i) Define the following terms briefly: COCOMO, DSI, FSP, MM, ACT, TDEV, (MM)AM. (ii) State the assumptions underlying the Basic COCOMO model. (b) Suppos
The Application You should develop your program using incremental development. Develop your program a little bit at a time and keep testing it. Save a working version before mak
Determine the working of developer of Software As developer of Software and user of Software became separate organisation, business concepts such as software costing, Software
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
Partitioning:- Problems are often too large and difficult to be understood as a whole. For this reason, we tend to partition such difficulties into parts that can be easily unders
Q. Assume that a program will experience 200 failures in infinite time. It has now experienced 100. The initial failure intensity was 20 failures/CPU hr. (i) Determine the cur
#This is part of my prog. in matlab and a graph has to be drawn for this equation. >> es0=6.11; T0=273.15; Lv=(2.5)*10^6; Rv=461.5; Td=80:.2:500; e=es0*exp((Lv/Rv).*((1./T0)-(1./T
What is a process modelling and management tool?
Write definition of ERD? Entity Relationship Diagram shows the graphical presentation of the object relationship pair. It is above all used in database applications.
What is SCM? Software Configuration Management is a set of activities carried out for identifying, organizing and controlling alters throughout the lifecycle of computer softwa
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