Corresponds to the ISO seven-layer model. Ethernet corresponds to the physical layer and network layer of the seven-layer model, and the specifications defined by Ethernet include the MAC sublayer…

Question

Options

• ATrue
• BFalse

• A
  23% (9)
• B
  77% (30)

Explanation

Option B (False) is correct because the statement incorrectly claims Ethernet maps to the physical layer and network layer of the OSI model - this is the key error. Ethernet actually operates at the physical layer (Layer 1) and the data link layer (Layer 2), specifically defining the MAC sublayer within the data link layer.

Option A is wrong because equating Ethernet with the network layer is a fundamental misattribution - the network layer (Layer 3) is where protocols like IP operate, not Ethernet. Ethernet never reaches up to Layer 3.

The second clause of the statement is internally correct (Ethernet does define the MAC sublayer and physical layer), but the opening claim about the network layer makes the whole statement false.

Memory tip: Think of the acronym "E = P + D" - Ethernet equals Physical + Data link. If you remember that IP "lives above" Ethernet at the network layer, you'll never confuse Ethernet with Layer 3 again.

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