CS504 Quiz 2 Set 2

Q1. In Data Flow Diagram (DFD), one data store cannot directly copy the data from another _________ .

1. Process
2. Flow
3. Data store
4. Agent

Correct answer: Data store

Q2. A context diagram:

1. is not used in drawing a detailed DFD
2. is a DFD which gives an overview of the system
3. is a detailed description of a system
4. describes detailed design of a system

Correct answer: is a DFD which gives an overview of the system

Q3. When two components of a system are using the same global data area, they are related as

1. Content Coupling
2. Common Coupling
3. Data Coupling
4. External Coupling

Correct answer: Common Coupling

Q4. ____________ is a technique that can be used to reduce customer dissatisfaction at requirement stage.

1. GUI
2. Negotiation
3. Prototyping
4. Analysis

Correct answer: Prototyping

Q5. UML stands for _________

1. Usable Modeling Language
2. Universal Modeling Language
3. Unified Modeling Language
4. United Method Language

Correct answer: Unified Modeling Language

Q6. By leveling a DFD (adding more levels of abstraction) we mean

1. Expanding a process into one with more sub-processes giving more detail
2. Make its structure uniform
3. Splitting it into different levels
4. Summarizing a DFD to specify only the essentials

Correct answer: Expanding a process into one with more sub-processes giving more detail

Q7. In Abbot’s Textual Analysis technique, the proper noun (e.g. Mehdi Hassan) represents

1. Inheritance
2. Class
3. Aggregation
4. Instance

Correct answer: Instance

Q8. From the following which is/are not the example(s) of illegal data flow in Data Flow Diagram (DFD)

1. External Agent updating information in a Data

Store

B. There must be an intermediate process which should transform data received from one external entity and then send the transformed data to the other external entity. C. External Agent accessing information from a Data Store D. External Agents directly communicating with each other

Q9. In UML based Object Oriented model of a system, the diamond sign is used to depict ________________ relations between two objects/classes.

1. Composition, Aggregation and Association
2. Composition and Aggregation
3. Inheritance and Association
4. Aggregation and Association

Correct answer: Composition and Aggregation

Q10. _____________ requirements cause frequent modifications in user interface.

1. User
2. Non-functional
3. Unstable
4. Functional

Correct answer: Unstable