d12 - IPv6 Addressing

(12.3.8) What is the recommended prefix length for most IPv6 subnets? /32 /48 /64 /128

/64

(12.9.4) What are three parts of an IPv6 global unicast address? (Choose three.) 1. an interface ID that is used to identify the local host on the network 2. a global routing prefix that is used to identify the portion of the network address provided by a local administrator 3. a subnet ID that is used to identify networks inside of the local enterprise site 4. a global routing prefix that is used to identify the network portion of the address that has been provided by an ISP 5. an interface ID that is used to identify the local network for a particular host

1. an interface ID that is used to identify the local host on the network 3. a subnet ID that is used to identify networks inside of the local enterprise site 4. a global routing prefix that is used to identify the network portion of the address that has been provided by an ISP

(12.8.5) Given a /48 Global Routing Prefix and a /64 prefix, what is the subnet portion of the following address: 2001:db8:cafe:1111:2222:3333:4444:5555 café 1111 2222 3333 4444

1111

(12.9.4) Your organization is issued the IPv6 prefix of 2001:db8:130f::/48 by your service provider. With this prefix, how many bits are available for your organization to create /64 subnetworks if interface ID bits are not borrowed? 80 128 8 16

16

(12.9.4) What is the valid most compressed format possible of the IPv6 address 2001:0DB8:0000:AB00:0000:0000:0000:1234? 2001:DB8::AB00::1234 2001:DB8:0:AB::1234 2001:DB8:0:AB00::1234 2001:DB8:0:AB:0:1234

2001:DB8:0:AB00::1234

(12.9.4) What is the network address for the IPv6 address 2001:DB8:AA04:B5::1/64? 2001:DB8:AA04::/64​ 2001::/64 2001:DB8:AA04:B5::/64​ 2001:DB8::/64​

2001:DB8:AA04:B5::/64​

(12.9.4) What is the prefix associated with the IPv6 address 2001:DB8:D15:EA:CC44::1/64? 2001:DB8::/64​ 2001::/64 2001:DB8:D15:EA:CC44::/64​ 2001:DB8:D15:EA::/64​

2001:DB8:D15:EA::/64​

(12.9.4) What is the most compressed representation of the IPv6 address 2001:0db8:0000:abcd:0000:0000:0000:0001? 2001:0db8:abcd::0001 2001:0db8:abcd::1 2001:db8::abcd:0:1 2001:0db8:0000:abcd::1 2001:db8:0:abcd::1

2001:db8:0:abcd::1

(12.8.5) Given a /32 Global Routing Prefix and a /64 prefix, how many bits would be allocated for the Subnet ID? 8 16 32 48 64

32

(12.9.4) What is the interface ID of the IPv6 address 2001:DB8::1000:A9CD:47FF:FE57:FE94/64? 1000:A9CD:47FF:FE57:FE94 FE57:FE94 47FF:FE57:FE94 A9CD:47FF:FE57:FE94 FE94

A9CD:47FF:FE57:FE94

(12.1.3) 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

Depletion of IPv4 addresses

(12.1.3) Which of the following techniques use native IPv6 connectivity? Dual stack Tunneling Translation All of the above

Dual stack

(12.5.8) What are the two methods a device can use to generate its own IPv6 interface ID? - SLAAC - stateless DHCPv6 - stateful DHCPv6 - EUI-64 - randomly generated

EUI-64 randomly generated

(12.9.4) Which IPv6 network prefix is only intended for local links and can not be routed? FC00::/7 2001::/3 FF00::/12 FE80::/10

FE80::/10

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

False

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

False (GUA = Global Unicast Address)

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

False --- (All 5 RIRs have exhausted their IPv4 address space)

(12.3.8) Which part of a GUA is assigned by the ISP? - Global routing prefix - Global routing prefix and subnet ID - Prefix - RIR prefix

Global routing prefix

(12.9.4) What is indicated by a successful ping to the ::1 IPv6 address? - The link-local address is correctly configured. - The default gateway address is correctly configured. - IP is properly installed on the host. - The host is cabled properly. - All hosts on the local link are available.

IP is properly installed on the host.

(12.9.4) What is the purpose of the command ping ::1? - It tests the internal configuration of an IPv6 host. - It tests the broadcast capability of all hosts on the subnet. - It tests the multicast connectivity to all hosts on the subnet. - It tests the reachability of the default gateway for the network.

It tests the internal configuration of an IPv6 host.

(12.3.8) Which type of IPv6 unicast address is not routable between networks? - unique local address - GUA - embedded IPv4 address - LLA

LLA

(12.3.8) What type of IPv6 address begins with fe80? - GUA - LLA - multicast address - None. An IPv6 address must begin with 2001.

LLA (Link Local Address)

(12.5.8) 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

Method 1: SLAAC

(12.5.8) Which dynamic addressing method for GUAs is the one where devices get their IPv6 configuration in a RA message and request DNS information from a DHCPv6 server? - Method 1: SLAAC - Method 2: SLAAC and stateless DHCPv6 - Method 3: Stateful DHCPv6

Method 2: SLAAC and stateless DHCPv6

(12.5.8) Which dynamic addressing method for GUAs is the one where devices rely solely on a DHCPv6 server for their addressing information? - Method 1: SLAAC - Method 2: SLAAC and stateless DHCPv6 - Method 3: Stateful DHCPv6

Method 3: Stateful DHCPv6

(12.8.5) Which field in an IPv6 GUA is used for subnetting? - Prefix - Network - Global Routing Prefix - Subnet ID - Interface ID

Subnet ID

(12.8.5) True or False? IPv6 was designed with subnetting in mind.

True

(12.9.4) Which address type is not supported in IPv6? - broadcast - private - multicast - unicast

broadcast

(12.9.4) At a minimum, which address is required on IPv6-enabled interfaces? - site local - global unicast - link-local - unique local

link-local

(12.9.4) What type of address is automatically assigned to an interface when IPv6 is enabled on that interface? - loopback - unique local - global unicast - link-local

link-local

(12.9.4) Which type of IPv6 address is not routable and used only for communication on a single subnet? - loopback address - unique local address - global unicast address - link-local address - unspecified address

link-local address

(12.9.4) What is the minimum configuration for a router interface that is enabled for IPv6? - to have a self-generated loopback address - to have a link-local IPv6 address - to have both a link-local and a global unicast IPv6 address - to have both an IPv4 and an IPv6 address

to have a link-local IPv6 address