200-150 · Question #21
Refer to the exhibit. What type of network communication is depicted?
The correct answer is D. Ethernet frame. An Ethernet frame is the Layer 2 PDU used in wired LAN communication, carrying MAC addresses and an EtherType field to identify the encapsulated protocol.
Question
Refer to the exhibit. What type of network communication is depicted?
Exhibit
Options
- A802 3 frame
- BTCP packet
- CUDP packet
- DEthernet frame
How the community answered
(24 responses)- B4% (1)
- C4% (1)
- D92% (22)
Why each option
An Ethernet frame is the Layer 2 PDU used in wired LAN communication, carrying MAC addresses and an EtherType field to identify the encapsulated protocol.
An IEEE 802.3 frame uses a Length field in place of Ethernet II's EtherType field; the exhibit shows the Ethernet II format, which is the more common and distinct variant.
A TCP packet is a Layer 4 PDU containing ports, sequence/acknowledgment numbers, and control flags - it is encapsulated inside an Ethernet frame's payload, not depicted at Layer 2.
A UDP packet is a Layer 4 PDU defined by source/destination ports and a simple checksum - it rides inside an Ethernet frame and is not the structure shown in the exhibit.
An Ethernet frame (Ethernet II format) contains destination MAC, source MAC, EtherType, payload, and FCS fields - this Layer 2 structure is the standard encapsulation used to deliver data across a LAN segment, which is what the exhibit depicts.
Concept tested: Ethernet frame structure and Layer 2 encapsulation
Source: https://learn.microsoft.com/en-us/windows-hardware/drivers/network/ethernet-frames
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