IPA part of the fields in the message are specifically used to describe the life cycle of the message, namely TTL Value, what is its maximum value?

Among the access technologies of the access network, which of the following access methods can provide the largest access bandwidth?

What are the incorrect statements about Type B protection for GPON networks?

Is the following description correct? MA5600T/MA5680T supports VLAN tag conversion. When SVLANs with different attributes create service flows through service-port, if tag-transform is set to default, the tag conversion rules are different.

The value of the PROTOCOL field of the PPP protocol is 8021, what is the protocol represented?