In the ____ Mode Service of an ISDN,several Circuits Can

question 2

Multiple Choice

In the ____ mode service of an ISDN,several circuits can be used during a communications session.

• A)circuit
• B)switching
• C)relay
• D)packet

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Definitions:

Ciliary Muscle

Within the ciliary body of the vertebrate eye, the ciliary muscle controls the shape of the lens.

Iris

Muscular ring that surrounds the pupil and regulates the passage of light through this opening.

Pupil

Opening in the center of the iris of the vertebrate eye.

Retina

The light-sensitive layer of tissue at the back of the inner eye, which converts light images into electrical signals sent to the brain.