Topic 9 Flashcards
How many bits are in an IPv6 address, and how are they grouped?
IPv6 addresses are 128 bits in length. Every 4 bits are represented by a single hexadecimal digit, making the IPv6 address a total of 32 hexadecimal values.
What are the two rules to reduce the notation of IPv6 addresses?
Rule 1 - Omit Leading Zero. Rule 2 - Double Colon.
What are the two types of IPv6 unicast addresses? List their main characteristics.
Global Unicast Address (GUA): Similar to a public IPv4 address, globally unique, internet-routable addresses. Link-local Address (LLA): Required for every IPv6-enabled device, used to communicate with other devices on the same local link, not routable and are confined to a single link.
What is the recommended length of the IPv6 prefix?
The recommended IPv6 prefix length is /64.
What are the parts of an IPv6 global unicast address, and what do they represent?
Global routing prefix: The network portion of the address. Subnet ID: Used to identify subnets within a site. Interface ID: Equivalent to the host portion of an IPv4 address.
How is the Link-local Address (LLA) configured?
If an LLA is not configured manually on an interface, the device will automatically create one.
What is the best practice to use as default gateway IPv6 address?
The GUA or LLA of the router interface can be used as the default gateway. Best practice is to use the LLA.
What is the advantage of static configuration of a Link-Local Address (LLA)?
To configure an LLA that is recognizable and easier to remember.
What is the purpose of the Stateless Address Autoconfiguration (SLAAC)?
A host using SLAAC will set its default gateway to the link-local address (LLA) of the router that sent the RA message.
SLAAC allows a device to configure a GUA without the services of DHCPv6.
How are the IPv6 subnets created?
A separate subnet ID field in the IPv6 GUA is used to create subnets.
