Answer:
H1 tag and LI tag
hopefully it will help you
<span>Ports are used to distinguish among multiple destination processes in a single host computer.</span>
UDP (User Datagram Protocol)<span> port 500 is used for i k e traffic from VPN client to server.
</span><span>This port is used during the establishment of secure VPN tunnels.
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D. <span>use clear, short paragraphs.</span>