Which port is used by DHCPv6 server (server-side)?

Prepare for the CPSA Port Numbers exam with multiple choice questions and detailed explanations. Understand key protocols and services to excel in your test.

Multiple Choice

Which port is used by DHCPv6 server (server-side)?

Explanation:
DHCPv6 uses UDP with separate ports for the client and the server, and the server listens on port 547. The client sends from its source port 546 to the server’s 547, and the server replies from 547 back to 546. This port pairing helps distinguish DHCPv6 traffic from other UDP traffic. Port 68 is used by DHCPv4 clients, not DHCPv6 servers. Port 546 is the DHCPv6 client port, not the server port. Port 9 has no role in DHCP. So the server-side port for DHCPv6 is 547.

DHCPv6 uses UDP with separate ports for the client and the server, and the server listens on port 547. The client sends from its source port 546 to the server’s 547, and the server replies from 547 back to 546. This port pairing helps distinguish DHCPv6 traffic from other UDP traffic. Port 68 is used by DHCPv4 clients, not DHCPv6 servers. Port 546 is the DHCPv6 client port, not the server port. Port 9 has no role in DHCP. So the server-side port for DHCPv6 is 547.

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