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What does Level0 DFD represent?
Level0 DFD is known as 'fundamental system model' or 'context model'. In the context model the entire software system is shown by a single bubble with input and output shown by incoming and outgoing arrows.
Question: (a) Differentiate between circuit switching and packet switching. (b) Using an example, explain the main parts that form a URL (Uniform Resource Locator). (c)
(a) Draw an Entity-Relationship model for the relational schema given in the Appendix. Show all the entities, relationships, relationship names, and attributes and also underline
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
system architecture block diagram
Discuss some of the problems that are faced during maintenance of software. The problems are: - Often another person or group of persons working over the years in isolat
Define Data objects, attributes & relationship. Data object: Representation of any collective information that must be understood by software. It can be any external entity.
Draw a memory map for a system with a memory capacity of 256MB. Each memory location in the system is 8 bits. Assume the system has one 4 MB memory block used as ROM residing at th
Q. Explain Test harness systems and Test archiving systems? Test harness systems: This is one that is bound around the test object and that permits the easy modification a
Define Brooks law. Software was delivered late, was not reliable, cost various times the original estimates and often exhibited poor performance characteristics.
Quality Assurance Quality assurance is an activity that establishes and evaluates the processes that produce products. Quality assurance would calculate processes to identify w
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