The security administrator of ABC needs to permit Internet traffic in the host 10.0.0.2 and UDP traffic in the host 10.0.0.3. He also needs to permit all FTP traffic to the rest of the network and den

ACL sequence numbers (104, 110) do not control protocol processing priority; they simply identify the access list, and statement order within the ACL is what determines processing sequence.

Changing the ACL to port 80 (HTTP) does not resolve the root problem of an earlier deny statement blocking all TCP before any permit rules are reached.

While moving the FTP ACL higher would be a partial fix, the actual root cause is that the first statement denies all TCP traffic, making the ordering of the FTP rule a symptom rather than the cause.

In Cisco ACLs, the router evaluates each statement in order and stops processing as soon as a match is found. If the first entry is a broad 'deny tcp any any' (or similar), it matches all TCP traffic - including HTTP and FTP - and the router never evaluates the subsequent permit statements. This explains why both Internet access and FTP are broken despite the later permit rules.