Question

question 15

an engineer uses a type of network adapter to connect a fiber link to a router. the transceiver fits into an optical interface on a layer 3 ethernet router.

of the choices, which layer 1 implementation does the engineer utilize?

a media converter
b voip endpoint
c bridge
d switch

Explanation:

Analyze the device and OSI layer requirements

The question describes an engineer connecting a fiber link to a router using a network adapter (transceiver) that fits into an optical interface. It asks which Layer 1 (Physical Layer) implementation is utilized.

Evaluate the given options

• A. Media converter: A media converter is a Layer 1 device that connects different types of media (such as copper and fiber optic cabling) or adapts a transceiver interface to connect a fiber link to a network device.
• B. VoIP endpoint: This is an application/session layer device (Layer 5-7) used for voice communication.
• C. Bridge: A bridge is a Layer 2 (Data Link) device used to connect and filter traffic between network segments.
• D. Switch: A standard Ethernet switch operates at Layer 2 (Data Link Layer).

Determine the correct choice

Since the question specifically asks for a Layer 1 implementation that adapts or connects a fiber link to a router interface, a media converter (or transceiver module acting as a physical layer adapter) is the correct Layer 1 device among the choices.

Answer:

• (A) Media converter (Correct answer)
• (B) VoIP endpoint
• (C) Bridge
• (D) Switch