Chapter 12

What is the most important motivating factor for moving to IPv6?

• better performance with IPv6

• IPv6 addresses that are easier to work with

• better security with IPv6

• depletion of IPv4 addresses

True or False: 4 out of 5 RIRs no longer have enough IPv4 addresses to allocate to customers on a regular basis.

• True

• False

Which of the following techniques use native IPv6 connectivity?

• dual stack

• tunneling

• translation

• all

What is the recommended prefix length for most IPv6 subnets?

• /16

• /32

• /64

• /128

Which part of a GUA is assigned by the ISP?

• global routing prefix

• global routing prefix and subnet ID

• prefix

• RIR prefix

Which type of IPv6 unicast address is not routable between networks?

• unique local address

• GUA

• LLA

• embedded IPv4 address

True or false? The Subnet ID field in an GUA must borrow bits from the interface ID

• True

• False

What type of IPv6 address begins with fe80?

• GUA

• LLA

• multicast address

• None

True or false? RA messages are sent to all IPv6 routers by hosts requesting addressing information.

• True

• False

Which dynamic addressing method for GUAs is the one where devices rely solely on the contents of the RA message for their addressing information?

• Method 1: SLAAC

• Method 2: SLAAC and stateless DHCPv6

• Method 3: Stateful DHCPv6