Network+ Chapter IPv4 & IPv6

Which data flow is NOT supported by IPv6?

Broadcast

What are two IPv6 transition technologies that can coexist with IPv4 to help ensure a smooth transition from IPv4 to IPv6?

Dual Stack & Tunneling

Router Solicitation, Router Advertisement

IPv6 enables hosts to generate their own IPv6 addresses without the need for a DHCPv6 server. This is referred to as stateless address autoconfiguration (SLAAC) and utilizes the Neighbor Discovery Protocol (NDP) that is built into the IPv6 protocol. What are the some of the packet types associated with the NDP process?

IPv6 can use a DHCPv6 server for the allocation of IPv6 addressing to hosts. Another IPv6 addressing option utilizes the IPv6 Neighbor Discovery Protocol (NDP) to discover the first portion of the IPv6 address (network prefix) from local routers, and the host can create its own host ID. What standard is commonly used by an IPv6 host to generate its own 64-bit host ID?

Automatic generation of a unique host ID is made possible through a process known as EUI-64. This uses the 48-bit MAC address on the device to aid in the generation of the unique 64-bit host ID. This allows you to create an IPv6 network free of DHCP-type services.

What practice allows you to further subnet a network as best as possible regarding the number of devices that need to be accommodated in each network?

Once you subnet the major network address space, you can further subnet one of the unused subnets! This practice is known as Variable-Length Subnet Masking (VLSM) and allows you to design the network as best as possible regarding the number of IP addresses required in different areas. Of course, this network also uses a variety of subnet masks in order to accomplish the task.

What format can be used to represent the low order 64 bits of an IPv6 address by reformatting a devices MAC address?

The Extended Unique Identifier (EUI-64) can be used by an IPv6 device to reformat its MAC address into the low-order 64 bits of an address; the high-order 64 bits are either locally configured or retrieved from a local advertising router.

What symbol can be used to represent a group of consecutive 0s in an IPv6 address?

The double colon can be used to represent a group of consecutive 0s; however, it can only be used once within any single IPv6 notation.