Y11 system diagram and Flowchart

What does DFD stand for?

• Data Flow Diagram

• Ducks Fly Dumb

• Data Fixing Diodes

• Diagrams For Data

Answer explanation

DFD stands for Data Flow Diagram, which is a visual representation of the flow of data within a system. The other options do not accurately describe this concept.

In a DFD what does the Circle/Oval shape represent?

• Entities

• Processes

• Storage

• Computers

Answer explanation

In a Data Flow Diagram (DFD), the Circle/Oval shape represents Entities, which are external sources or destinations of data. They interact with the system but are not part of the system's processes.

What does IFD stand for?

• Information Flow Diagram

• Information Falls Down

• Insects Fly Dumb

• Information Float Diagram

Answer explanation

IFD stands for Information Flow Diagram, which is a visual representation of the flow of information within a system. The other options do not accurately represent this concept.

In a flow chart a Terminator is used to start and end the chart, what shape is it?

• Circle

• Square

• Triangle

• Robot from the future come for Sarah Connor

Answer explanation

In flow charts, a Terminator shape is represented by an oval or circle. It indicates the start and end points of the process, making 'Circle' the correct choice among the options provided.

In a flow chart a rectangle represents what?

• Terminator

• Process

• Data Input/Output

• Houses

Answer explanation

In a flow chart, a rectangle represents a 'Process'. It indicates a step where an action or operation is performed, distinguishing it from other shapes like ovals (terminators) or parallelograms (data input/output).

System Diagrams are used to show all the physical components in a system, not the data they use.

• True

• False

Answer explanation

True. System Diagrams focus on illustrating the physical components of a system, such as hardware and connections, rather than the data or information that these components process or use.

What does this symbol represent?

• Input

• Output

• Process

• Decision

Answer explanation

The symbol represents a decision point in a flowchart, indicating where a choice must be made. This is why 'Decision' is the correct answer, as it signifies branching paths based on different conditions.

What does this symbol represent?

• Input

• Input / Output

• Process

• Output

Answer explanation

The symbol represents both 'Input' and 'Output' as it indicates a system that receives data (input) and produces results (output). Therefore, 'Input / Output' is the correct choice.

What does this symbol represent?

• Input

• Output

• Process

• Decision

Answer explanation

The symbol represents a 'Process' as it indicates a series of actions or steps taken to achieve a particular end. In contrast, 'Input' and 'Output' refer to data entering or leaving a system, while 'Decision' involves choosing between options.

What does this symbol represent?

• Process

• Data Store

• External Entity

• Data Flow

Answer explanation

The symbol represents a 'Process' in data flow diagrams, indicating an operation that transforms input data into output. This distinguishes it from other elements like Data Store or External Entity.