Question 1

A data flow diagram is a graphical tool that allows analysts to illustrate the flow of data in an information system.

Accepted Answer

This statement is true. A data flow diagram is a visual representation of how data moves between different processes in a system. It can be used to model and analyze the flow of data in various contexts, such as in business processes, software systems, or network architectures. The diagram typically consists of a set of symbols that show the inputs, outputs, processes, and data stores involved in the system, as well as the data flows between them. This type of diagram helps analysts to understand and communicate complex data relationships and dependencies, and can be used to identify potential bottlenecks or inefficiencies in a system design.

Question 2

A data flow represents data in motion,moving from one place in the system to another.

Accepted Answer

This statement is true. A data flow in a system represents the movement of data from one part of the system to another. It can show how data is generated, processed, stored, and distributed within a system. Data flows are important in the design and analysis of information systems.

Question 3

Logic modeling graphically represents the processes that capture,manipulate,store,and distribute data between a system and its environment and among components within a system.

Accepted Answer

False

Question 4

The determination of which items are low in stock is represented on a data flow diagram as a process.

Accepted Answer

The process of determining low stock items is represented as a process on a data flow diagram as it involves a specific set of actions and decisions.

Question 5

A Web site's customer is represented as a source on a data flow diagram.

Accepted Answer

A data flow diagram represents the flow of information within a system, including the sources and destinations of that information. In the case of a website, the customers accessing the site would be represented as a source on the data flow diagram.

Question 6

On a data flow diagram,a paycheck is represented as a data store.

Accepted Answer

The answer of On a data flow diagram,a paycheck is...

Question 7

The data a sink receives and often what data a source provides are fixed.

Accepted Answer

The answer of The data a sink receives and often...

Question 8

When constructing data flow diagrams,you should show the interactions that occur between sources and sinks.

Accepted Answer

The answer of When constructing data flow diagrams,you should show...

Question 9

A primitive level data flow diagram is the first deliverable produced during requirements structuring.

Accepted Answer

The answer of A primitive level data flow diagram is...

Question 10

Data flow diagrams evolve from the more general to the more detailed as current and replacement systems are better understood.

Accepted Answer

This statement is true as data flow diagrams start with a high-level view of a system's data flows and gradually move towards a more detailed view as the system is understood better.

Question 11

Context diagrams have only one process labeled "P-1."

Accepted Answer

The answer of Context diagrams have only one process labeled...

Question 12

Assume your local veterinarian records information about each of his patients on patient medical history forms; the collection of medical history forms is represented on a data flow diagram as a data store.

Accepted Answer

This statement is true as a data store represents a collection of data or information that is stored for later use or retrieval. In this case, the collection of medical history forms serves as a data store for the veterinarian's patients.

Question 13

On a data flow diagram,a diamond represents a process.

Accepted Answer

A diamond typically represents a decision or a condition in a data flow diagram. A process is represented by a rectangle on the diagram.

Question 14

Assume shipment data is entered into a logbook once shipments are received at the company's warehouse; the logbook is represented on a data flow diagram as a sink.

Accepted Answer

The answer of Assume shipment data is entered into a...

Question 15

A context diagram shows the scope of the organizational system,system boundaries,external entities that interact with the system,and major information flows between entities and the system.

Accepted Answer

A context diagram is used to show the scope and boundaries of a system, as well as the external entities that interact with it and the major information flows between them.

Question 16

On a data flow diagram,an arrow represents an action,such as calculating an employee's pay.

Accepted Answer

The answer of On a data flow diagram,an arrow represents...

Question 17

The calculation of a student's grade is represented on a data flow diagram as a data flow.

Accepted Answer

The answer of The calculation of a student's grade is...

Question 18

On a data flow diagram in the DeMarco and Yourdon model,two parallel lines represent a data store.

Accepted Answer

In the DeMarco and Yourdon model, two parallel lines represent a data store, while a single line indicates a data flow.

Question 19

A customer order is represented on a data flow diagram as a data flow.

Accepted Answer

A customer order is a type of data that flows from the customer to the system, so it is represented as a data flow on a data flow diagram.

Question 20

Sources and sinks are internal to the system.

Accepted Answer

The answer of Sources and sinks are internal to the...

Quiz 7: Structuring System Process Requirements