help3002

It's UWAweek 48

help3002

This forum is provided to promote discussion amongst students enrolled in CITS3002 Computer Networks.

Please consider offering answers and suggestions to help other students! And if you fix a problem by following a suggestion here, it would be great if other interested students could see a short "Great, fixed it!" followup message. How do I ask a good question?

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UWA week 18 (1st semester, week 9) ↓

project Unreliable UDP (all 6)

1:44pm Fri 3rd May, Cameron L.

By addressing the unreliability, does that mean we also have to error-check? I'm not sure if " If a datagram arrives, it will be uncorrupted. " is a statement of fact, or a requirement for us to ensure.

UWA week 11 (1st semester, week 3) ↓

labs Lab 2 Topology query (all 4)

3:56pm Thu 14th Mar, Cameron L.

I would assume that to avoid the two generals problem, corrupt acknowledgment frames are ignored after a point (for simplicity, if not efficiency, I've been ignoring them entirely and allowing them to timeout). But I'm still not sure why a resent corr...

labs Lab 2 Topology query (all 4)

3:28pm Thu 14th Mar, Cameron L.

On looking further, I assume ber is Bit Error Rate. That doesn't explain why one failed checksum will always resend into another failed checksum, so I'll keep looking.

labs Lab 2 Topology query (all 4)

3:21pm Thu 14th Mar, Cameron L.

Good Afternoon, For Lab 2, STOPANDWAIT2 has a variable called ber, set to 0.00005, is this the probability of frame corruption? If not, how is frame corruption handled in this topology? I've managed to get the Negative Acknowledgement working (or at le...