[CCCure CISSP] Metro ethernet question

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[CCCure CISSP] Metro ethernet question

cissp_student_01
Please provide explaination
 
 
Metro Ethernet is a MAN protocol that can work in network infrastructures
made up of access, aggregation, metro, and core layers. Which of the
following best describes these network infrastructure layers?
A. The access layer connects the customer’s equipment to a service provider’s
aggregation network. Aggregation occurs on a core network. The metro
layer is the metropolitan area network. The core connects different metro
networks.
B. The access layer connects the customer’s equipment to a service provider’s
core network. Aggregation occurs on a distribution network at the core.
The metro layer is the metropolitan area network.
C. The access layer connects the customer’s equipment to a service provider’s
aggregation network. Aggregation occurs on a distribution network. The
metro layer is the metropolitan area network. The core connects different
access layers.
D. The access layer connects the customer’s equipment to a service provider’s
aggregation network. Aggregation occurs on a distribution network. The
metro layer is the metropolitan area network. The core connects different metro network
 
Regards
Sameer

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