How Many of SONET's Layers Correspond to Layers in the OSI

question 7

Multiple Choice

How many of SONET's layers correspond to layers in the OSI model?

• A)1
• B)2
• C)3
• D)4

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Definitions:

Pulmonary Emphysema

Pulmonary emphysema is a chronic respiratory disease characterized by the destruction of the air sacs in the lungs, leading to breathlessness.

Chronic Obstructive Pulmonary Disease

A group of lung diseases that block airflow and make it difficult to breathe, typically progressing over time.

Pulmonary Emphysema

A chronic respiratory condition where the air sacs of the lungs are damaged, leading to breathlessness.

Alveoli

Tiny air sacs in the lungs where gas exchange between the air and blood takes place, crucial for respiration.