JN0-102 · Question #15
At which layer of the OSI model does error checking occur with IPv6?
The correct answer is C. Layer 4. IPv6 itself, at Layer 3, does not perform error checking on the packet payload; instead, error checking for IPv6 packets is handled by higher-layer protocols like TCP or UDP at Layer 4.
Question
At which layer of the OSI model does error checking occur with IPv6?
Options
- ALayer 2
- BLayer 3
- CLayer 4
- DLayer 7
How the community answered
(33 responses)- A3% (1)
- B6% (2)
- C88% (29)
- D3% (1)
Why each option
IPv6 itself, at Layer 3, does not perform error checking on the packet payload; instead, error checking for IPv6 packets is handled by higher-layer protocols like TCP or UDP at Layer 4.
Layer 2 (Data Link) protocols perform error checking for frames, but this is specific to the link and not end-to-end for the IP packet payload.
IPv6 explicitly omits a header checksum at Layer 3, meaning Layer 3 does not perform error checking for the IP payload.
IPv6, unlike IPv4, removes the header checksum, making it a simpler, faster protocol at Layer 3, offloading error checking responsibilities to higher layers like TCP or UDP at Layer 4, which use checksums. This allows for more efficient processing by network devices.
Layer 7 (Application) protocols might have their own integrity checks, but general error checking for the transport of data in an IPv6 network occurs at Layer 4.
Concept tested: IPv6 error checking and OSI layer functions
Source: https://learn.microsoft.com/en-us/windows/win32/winsock/ipv6-features
Topics
Community Discussion
No community discussion yet for this question.