Final answer:
The MTU value for your primary interface on an Ethernet network is 1500 bytes.
Step-by-step explanation:
The Maximum Transmission Unit (MTU) is the largest size packet or frame that can be transmitted over a network medium. The MTU value depends on the specific network medium being used. For Ethernet networks, the most common MTU value is 1500 bytes, which is the default value for most network devices.
Option A) 1500 bytes is the correct answer for the MTU value for your primary interface on an Ethernet network.