If data is being sent over a wireless network, then connects to an Ethernet network, and eventually connects to a DSL connection, which header will be replaced each time the data travels through a network infrastructure device?

Question:
If data is being sent over a wireless network, then connects to an Ethernet network, and eventually connects to a DSL connection, which header will be replaced each time the data travels through a network infrastructure device?

• Layer 3
• data link
• physical
• Layer 4

Explanation: Because each data link layer protocol controls how the device accesses the media, the data link information must be removed and re-attached. Even if a packet is going from one Ethernet network to another Ethernet network, the data link layer information is replaced.

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