200-150 · Question #56
Refer to the exhibit. Which type of network communication is depicted?
The correct answer is A. 802.3 frame. The exhibit shows an IEEE 802.3 Ethernet frame, a Layer 2 construct defined by its structure of destination MAC, source MAC, length-type field, payload, and FCS.
Question
Refer to the exhibit. Which type of network communication is depicted?
Exhibit
Options
- A802.3 frame
- BTCP frame
- CEthernet packet
- DUDP packet
How the community answered
(48 responses)- A90% (43)
- B6% (3)
- C2% (1)
- D2% (1)
Why each option
The exhibit shows an IEEE 802.3 Ethernet frame, a Layer 2 construct defined by its structure of destination MAC, source MAC, length-type field, payload, and FCS.
An 802.3 frame is the correct Layer 2 protocol data unit for Ethernet, defined by the IEEE 802.3 standard with fields for destination MAC address, source MAC address, EtherType-length, data payload, and a 32-bit frame check sequence - all components identifiable in a standard Ethernet frame diagram.
TCP is a Layer 4 protocol whose PDU is called a segment, not a frame - 'TCP frame' is not a valid or standard networking term.
'Ethernet packet' is incorrect terminology because Ethernet operates at Layer 2 and uses frames; packets are Layer 3 PDUs associated with IP, not Ethernet.
UDP is a Layer 4 protocol that produces datagrams, not packets, and it is encapsulated inside IP and then Ethernet - UDP itself does not describe the Layer 2 structure depicted.
Concept tested: IEEE 802.3 Ethernet frame structure and terminology
Source: https://www.cisco.com/c/en/us/support/docs/ibm-technologies/logical-link-control-llc/12933-6.html
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