JN0-102 · Question #280
Which two fields are found in an Ethernet frame header? (Choose two.)
The correct answer is C. checksum D. type. This question asks to identify two common fields present in the header of an Ethernet frame.
Question
Which two fields are found in an Ethernet frame header? (Choose two.)
Options
- ATTL
- Bflags
- Cchecksum
- Dtype
How the community answered
(26 responses)- A4% (1)
- B4% (1)
- C92% (24)
Why each option
This question asks to identify two common fields present in the header of an Ethernet frame.
TTL (Time To Live) is a field found in an IP packet header (Layer 3) to prevent packets from looping indefinitely, not in an Ethernet frame header (Layer 2).
Flags are typically associated with IP fragmentation or TCP segments, not a standard field within the Ethernet frame header itself.
An Ethernet frame contains a Frame Check Sequence (FCS) field, which is a checksum used for error detection of the entire frame content.
The Type (or EtherType) field is present in the Ethernet frame header to indicate the protocol carried in the frame's payload, such as IPv4, IPv6, or ARP.
Concept tested: Ethernet frame structure
Source: https://www.cisco.com/c/en/us/support/docs/lan-switching/ethernet-technologies/10574-21.html
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