Multiple Questions Incorrect

[chcchamp]

I submitted two (of what I believe to be) incorrect answers in the CCNA quiz another post and am seeing a 3rd wrong now.  The top two may have been changed but I didn't see a response .

QID:AN729 - I believe answer is point to point, not broadcast
QID: AN736-  PAcked sourced from 10.10.10.32.   Answer should be 1, you had 0.
QID:AN342 -  You have that the router replaces the original source and destination MAC address.  Routers don't use MACs, only IP.

I could have these wrong but if not, can you please put an explanation of how you got your answers. I investigated and couldn't find anything.

[forumsupport]

AN729 and AN736 have been corrected.

Regarding AN342, the answer is correct. When a router receives a packet, it inspects source and destination IP address, only to decide which interface should be used to send the packet, based on its routing table. Actual packet forwarding/switching takes place using the MAC addresses (even between routers).