Which three options are fields in a basic ethernet data frame ?

5 thoughts on “Which three options are fields in a basic ethernet data frame ?”

1. AEF

   Preamble – informs the receiving system that a frame is starting and enables synchronisation.
   SFD (Start Frame Delimiter) – signifies that the Destination MAC Address field begins with the next byte.
   Destination MAC – identifies the receiving system.
   Source MAC – identifies the sending system.
   Type – defines the type of protocol inside the frame, for example IPv4 or IPv6.
   Data and Pad – contains the payload data. Padding data is added to meet the minimum length requirement for this field (46 bytes).
   FCS (Frame Check Sequence) – contains a 32-bit Cyclic Redundancy Check (CRC) which allows detection of corrupted data.

   Reply

2. A E F

   Reply

3. Hello,
   talking about ETHERNET FRAMES, we are obviously at OSI L2 level floor. And at this level, there is ONLY MAC addressing, NO IP addressing whatsoever. Therefore, we can see that B and C belong to OSI L3, they are specific to that layer: TTL = time to live of an IP packet; TYPE = the type of IP packets: IPv4 or IPv6;

   Reply

4. Cant’ be ALL, we’re talking about Frame, it’s Layer 2 therefore :

   no TTL which is the reason why we have SPT at L2 to avoid loop
   no header checksum, only FCS which allows to check for basic FULL frame issue (although bits permutations won’t be detected… :/ anyway there are more thorough check in the upper layer ) in which case frame will be dropped, so NO

   and finally no Version, but Ether Type so

   Reply

5. ALL

   Reply