Chapter 12 Study Guide
Which is the compressed format of the IPv6 address 2001:0db8:0000:0000:0000:a0b0:0008:0001?
2001:db8::a0b0:8:1
NS
Neighbor Solicitation
RA
Router Advertisement
What is the most common prefix you will see in IPv6?
The recommended IPv6 prefix length for LANs and most other types of networks is /64
ff02::2 All-routers multicast group
This is a multicast group that all IPv6 routers join. A router becomes a member of this group when it is enabled as an IPv6 router with the ipv6 unicast-routing global configuration command.
An IPv6 address block with a /48 prefix length has ______ bits for the subnet ID.
16
Which is the compressed format of the IPv6 address 2002:0042:0010:c400:0000:0000:0000:0909?
2002:42:10:c400::909
What do LLA addresses start with?
FE80
Which protocol supports Stateless Address Autoconfiguration (SLAAC) for dynamic assignment of IPv6 addresses to a host?
ICMPv6
Why can the same link local address be assigned to two Ethernet interfaces on the same router?
Link locals never leave the local network so as long as it is a different network you can use the same address many times.
NA
Neighbor Advertisement
Which type of IPv6 unicast address is not routable between networks?
Unique local address
What type of IPv6 address is FE80::1?
link-local
What is used in the EUI-64 process to create an IPv6 interface ID on an IPv6 enabled interface?
the MAC address of the IPv6 enabled interface
RS
Router Solicitation
Which service provides dynamic global IPv6 addressing to end devices without using a server that keeps a record of available IPv6 addresses?
SLAAC
What is the prefix of an IPv6 multicast address?
ff00::/
DHCPv6
Dynamic Host Configuration Protocol version 6
The Subnet ID field in an GUA must borrow bits from the interface ID
FALSE
What is a prefix in IPv6?
is represented in slash notation and is used to indicate the network portion of an IPv6 address. length can range from 0 to 128..
How long is an IPv6 address?
128 Bits
SLAAC
Stateless Address Auto-configuration
Which type of IPv6 address refers to any unicast address that is assigned to multiple hosts?
anycast
Given IPv6 address prefix 2001:db8::/48, what will be the last subnet that is created if the subnet prefix is changed to /52?
2001:db8:0:f000::/52
GUA
Global Unicast Address
What type of address is supported by IPv4 but not IPv6?
VLSM (Virtual Length Subnet Mask)
ANDing
the process of performing multiplication to two binary numbers
What is a Link-local address?
used to communicate with other devices on the same local link. LLAs are not routable and are confined to a single link.
What does this command do "ipv6 unicast-routing"?
enable IPv6 routing on a Cisco router
What are two types of IPv6 unicast addresses? (Choose two.)
link-local loopback
If you see an address that is fffe what does that tell us?
the address is reserved for multicast. The IPv6 universal/local flag (bit 7) was flipped.
Consider the following range of addresses:2001:0DB8:BC15:0600:0000:: to 2001:0DB8:BC15:0FFF:0000:: The prefix for the range of addresses is _________
/52
Which two IPv6 prefix lengths are valid when nibble aligned subnet masks are used?
/64 /68
Refer to the exhibit. A company is deploying an IPv6 addressing scheme for its network. The company design document indicates that the subnet portion of the IPv6 addresses is used for the new hierarchical network design, with the site subsection to represent multiple geographical sites of the company, the sub-site section to represent multiple campuses at each site, and the subnet section to indicate each network segment separated by routers. With such a scheme, what is the maximum number of subnets achieved per sub-site?
16
What is the prefix for the host address 2001:DB8:BC15:A:12AB::1/64?
2001:DB8:BC15:A
Which of these addresses is the shortest abbreviation for the IP address: 3FFE:1044:0000:0000:00AB:0000:0000:0057?
3FFE:1044:0:0:AB::57
A network administrator has received the IPv6 prefix 2001:DB8::/48 for subnetting. Assuming the administrator does not subnet into the interface ID portion of the address space, how many subnets can the administrator create from the /48 prefix?
65536
How do we represent IPv6 addresses?
8 octets of 4 bits separated by colons
What is the most important motivating factor for moving to IPv6?
Depletion of IPv4 addresses
The IPv4 packets and IPv6 packets coexist in the same network __________
Dual stack
What is Dual Stack, Tunneling and Translation forms of?
Dual stack -The devices run both IPv4 and IPv6 protocol stacks simultaneously. Tunneling - A method of transporting an IPv6 packet over an IPv4 network. The IPv6 packet is encapsulated inside an IPv4 packet. Translation - Network Address Translation 64 (NAT64) allows IPv6-enabled devices to communicate with IPv4-enabled devices using a translation technique similar to NAT for IPv4.
DAD
Duplicate Address Detection
Which address is a valid IPv6 link-local unicast address?
FE80::1:4545:6578:ABC1
What kind off IPv6 addresses did you find using ipconfig /all?
Link local
What is this address ff02::2?
Multicast ; all IPv6 routers
What is the Global Routing Prefix and how do we get it?
The global routing prefix is a value assigned to a site. The subnet ID is an identifier of a link within the site. The interface ID is used to identify an interface on a link; interface IDs are required to be unique within a subnet prefix.
ff02::1 All-nodes multicast group
This is a multicast group that all IPv6-enabled devices join. A packet sent to this group is received and processed by all IPv6 interfaces on the link or network.
Ipv6 packets are converted into IPv4 packets and vice versa_____________
Translation
The IPv6 packet is transported inside an IPv4 packet ______________
Tunneling
What is a unicast address and typically how many does each device have?
Unicast uniquely identifies an interface on an IPv6-enabled device, and typically each device has 1
What are the rules for shorting an IPv6 address?
You can get rid of leading 0's You can get rid of groups of 0's with ::
What are the rules for using the ::?
You can only use it 1 time, use on biggest group of 0's