Cisco Certified Network Associate (CCNA) Practice Exam

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Study for the Cisco Certified Network Associate (CCNA) exam with our comprehensive quiz featuring multiple-choice questions and detailed explanations. Prepare effectively and enhance your understanding of networking concepts!

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Which command is used to configure an interface to dynamically learn an IPv6 address using DHCP?

ipv6 address autoconfig
ipv6 address dhcp
ipv6 address static
ipv6 address configured

The correct answer is: ipv6 address dhcp

The command used to configure an interface to dynamically learn an IPv6 address using DHCP is "ipv6 address dhcp." This command enables the interface to request and receive an IPv6 address from a DHCPv6 server, effectively allowing the router or device to obtain its IPv6 address configuration dynamically rather than being statically assigned. Dynamic Host Configuration Protocol for IPv6 (DHCPv6) is crucial in networks where devices frequently join and leave the network, as it simplifies address management and helps prevent address conflicts. When this command is applied on an interface, it initiates the process of communication with the DHCPv6 server, which responds by assigning an available IPv6 address, along with other configuration parameters such as DNS information. Options that involve autoconfiguration or static addresses do not pertain to the DHCP process. Autoconfiguration allows devices to automatically generate their own IPv6 addresses based on their link-layer addresses, while static configuration requires manual assignment of an IPv6 address, which does not involve any dynamic learning or server communication. Therefore, using "ipv6 address dhcp" is the correct approach when the goal is to enable dynamic address assignment via a DHCPv6 server.