Software Engineering Week 6 NPTEL Assignment Answers 2025

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✅ Subject: Software Engineering
📅 Week: 6
🎯 Session: NPTEL 2025 July-October
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NPTEL Software Engineering Week 6 Assignment Answers 2025

Answer : See Answers

2. Which of the following are represented in the context diagram in a DFD (data flow diagram)
model of a system?

a. The external entities with which the system interacts.
b. The data input to the system by the external entities
c. The important processes in the system
d. The output data generated by the system
e. The important data stores of the system

Answer :

3. Which of the following statements are not true of a data flow diagram (DFD) model?

a. It is a hierarchical diagram.
b. It represents code structure
c. It does not represent decisions and control flows.
d. It represents the decomposition of functions and data into finer forms.
e. It is constructed bottom-up

Answer :

4. Which of the following are not true of DFD (data flow diagram) modelling of a system?

a. Represents the system in multiple DFDs that are hierarchically arranged
b. The DFD model is usually constructed bottom-up
c. It explicitly represents the different processing carried out in the system
d. It explicitly represents data interchange among the different processes in the system.
e. The DFD model of a system can be directly implemented using a procedural language such as C.

Answer :

5. A context diagram should not represent which of the following?

a. External entities.
b. Data input to the system by the external entities,
c. Output data generated by the system.
d. Module structure
e. Order in which the external entities input data to the system

Answer :

6. Which of the following correctly characterizes balancing of DFDs (data flow diagrams)?

a. Data flowing into a bubble at any level must match the data flowing into the next level of DFD obtained by decomposing the bubble.
b. Data flowing out of a bubble at any level, other than level 0, must match the data flowing out of the previous level of DFD.
c. Data flowing out of a bubble at any level must match the data flowing into the next level of DFD obtained by decomposing the bubble.
d. Data flowing out of a bubble at any level must match the data flowing out of the next level of DFD obtained by decomposing the bubble.
e. Data flowing into a bubble at any level other than level 0 must match the data flowing into the previous level of DFD.