Ooh, a tricky one! I bet the answer is just A, C, and D. I mean, come on, FTP using UDP? And the OSI layer thing? That's gotta be a trick question. Time to go with my gut on this one.
Alright, let's see... A, C, and D are definitely true. But B and E? FTP using UDP? And UDP at the data-link layer? Sounds like someone's trying to trip us up here. Time to put on my thinking cap!
Ha, this is easy! UDP is the 'Unreliable Datagram Protocol' for a reason. And both FTP and TFTP use it, everyone knows that. As for the OSI layer, I'm going to go with 'true' on that one - why not, it sounds plausible enough!
A, C, and D are all correct, no doubt about it. But E? UDP at the data-link layer? Hmm, that sounds a bit fishy to me. Maybe the exam writers are trying to trick us on that one.
UDP is definitely an unreliable protocol, and TFTP does use a UDP port, so those are definitely true. But I'm not sure about FTP using UDP - I thought it used TCP. And the OSI layer thing is tricky, I'll have to double-check that one.
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