IPv6 Addressing And Nd

The correct answer is Global, Link-Local, Unique-local. Unicast IPv6 addresses are used to identify a single network interface and are assigned to individual devices. Global addresses are used for communication over the internet, Link-Local addresses are used for communication within a local network, and Unique-local addresses are used for communication within a site or organization.

SLAAC stands for Stateless Auto Configuration. This term refers to a method used in IPv6 networks where hosts can automatically configure their own network settings without the need for manual configuration or the use of DHCP servers. It allows hosts to generate their own unique addresses and obtain other network information from neighboring routers. This process is stateless because the hosts do not maintain any specific state or information about the network. Instead, they rely on the information provided by the routers to configure themselves.

The loopback address for IPv6 is represented by ::1. This address is used to test network connectivity on a local machine. It allows a device to send data to itself, simulating a network connection without actually sending data over a physical network.

The correct answer is DAD, which stands for Duplicate Address Detection. This mechanism is used in IPv6 networks to ensure that each device has a unique IP address. When a device joins a network, it sends out a Neighbor Solicitation message to check if the IP address it wants to use is already in use by another device. If it receives a Neighbor Advertisement message in response, it means that the address is already in use and the device must choose a different address.

When a host needs information about routers on the network, it sends a "router-solicitation" message. This message is used by the host to discover and obtain information about available routers on the network. By sending a router-solicitation message, the host is requesting the routers to provide their configuration information, allowing the host to establish communication and connectivity within the network.

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When the IP address of a host is known, a neighbor-solicitation message is sent to request its physical address. This message is part of the Neighbor Discovery Protocol (NDP) in IPv6. It is used to determine the link-layer address (MAC address) of a neighbor in the same network segment. By sending a neighbor-solicitation message, the host is asking the target host to respond with its physical address, allowing communication to occur between them.

Link-local IPv6 addresses are created by combining the local-link prefix FE80 with the 64-bit IPv6 identifier. This combination ensures that link-local addresses are unique within a particular network segment. Randomly generating addresses or using prefixes such as FC00 or F808 are not the correct methods for creating link-local IPv6 addresses. Another method of generating IPv6 addresses, which involves using the MAC address and inserting FFFE, is used for creating global IPv6 addresses, not link-local addresses.

Link-local addresses are a type of IPv6 address that is automatically assigned to interfaces for communication within a local network segment. These addresses do not have a subnet ID because they are only used for communication within the immediate network and are not routable outside of it. They are typically used for neighbor discovery and automatic address configuration.

The sending host uses the "path MTU" to determine the maximum transmission unit (MTU) size of packets. The path MTU refers to the maximum size of packets that can be transmitted without fragmentation along the entire path from the source host to the destination host. By determining the path MTU, the sending host can ensure that packets are not fragmented during transmission, which can improve network performance and reduce the likelihood of packet loss.