Which of the Following Statements Related to the Construction of Data

question 125

Multiple Choice

Which of the following statements related to the construction of data flow diagrams (DFDs) is false?

• A) The level 0 diagram is the next level down from the context diagram.
• B) If the level 0 diagram has one arrow going into bubble number 1.0 and two arrows leaving bubble number 1.0, then diagram 1.0 will show one arrow entering and two arrows leaving.
• C) Sources and destinations are depicted by parallel horizontal lines, between which the name of the entity is shown.
• D) Arrows represent a pathway for data.

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Definitions:

Radiation

The emission of energy as electromagnetic waves or as moving subatomic particles, especially high-energy particles which cause ionization.

PET Scans

Positron Emission Tomography scans, a type of imaging test that allows doctors to check for diseases in the body by using a special dye containing radioactive tracers.

fMRI

Functional Magnetic Resonance Imaging, a technique for measuring and mapping brain activity by detecting changes associated with blood flow.