Title: ICND1 / 3. IP addressing (IPv4 / IPv6)

Q: Which statements are TRUE regarding Internet Protocol version 6 (IPv6) addresses? (Choose three.)
 An IPv6 address is divided into eight 16-bit groups.
 A double colon (::) can only be used once in a single IPv6 address.
 IPv6 addresses are 196 bits in length.
 Leading zeros cannot be omitted in an IPv6 address.
 Groups with a value of 0 can be represented with a single 0 in IPv6 address.
A: IPv6 addresses are divided into eight 16-bit groups, a double colon (::) can only be used once in an IPv6 address, and groups with a value of 0 can be represented with a single 0 in an IPv6 address.
The following statements are also true regarding IPv6 address:
-IPv6 addresses are 128 bits in length.
-Eight 16-bit groups are divided by a colon (:).
-Multiple groups of 16-bit 0s can be represented with double colon (::).
-Double colons (::) represent only 0s.
-Leading zeros can be omitted in an IPv6 address.
The option stating that leading zeros cannot be omitted in an IPv6 address is incorrect. Leading zeros can be omitted in an IPv6 address.

Q: Only _______ IP addresses are registered with the InterNIC(Internet Network Information Center).
A: public

Q: You are the network administrator for your company. You want to upgrade the network, which is currently running on IPv4, to a fully functional IPv6 network. During the transition, you want to ensure that hosts capable only of IPv6 can communicate with hosts capable only of IPv4 on the network.
Which solution should you implement to accomplish the task in this scenario?
A: The protocol translation deployment model should be used to accomplish the task in this scenario. It is the only offered solution that does not require at least one end of the communication solution to support both IPv6 and IPv4.

Q: __________________: A hybrid model in which backbone routers have dual-stack functionality, which enables them to route both IPv4 and IPv6 packets. It is suitable for an enterprise that uses both IPv4 and IPv6 applications. Running IPv6 and IPv4 together in a network is known as dual-stack routing.
A: Dual-Stack Backbones

Q: _______________: A method allowing an IPv6 host to communicate with an IPv4 host. This is accomplished with the help of Network Address Translation - Protocol Translation (NAT-PT) used to configure translation between IPv6 and IPv4 hosts. NAT-PT allows communication between IPv6 hosts and applications, and native IPv4 hosts and applications.
A: Protocol translation

Q: __________________: IPv6 traffic is encapsulated into IPv4 packets. Then these packets are transferred over IPv4 WAN. This model eliminates the need to create separate circuits to connect to the IPv6 networks. This model increases protocol overhead because of the IPv6 headers and requires the edge router at each end be capable of both protocols.
A: IPv6 over IPv4 tunnels

Q: ______________: These types of addresses are used to identify a set of devices. These addresses are also assigned to more than one interface belonging to different nodes. A packet sent to an anycast address is delivered to just one of the interfaces, based on which one is closest. For example, if an anycast address is assigned to a set of routers, one in India and another in the U.S., the users in the U.S. will be routed to U.S. routers and the users in India will be routed to a server located in India.
A: Anycast address

Q: Which Protocol is used to obtain the IP address for a machine based on the MAC address?
A: Reverse Address Resolution Protocol (RARP)

Q: A type of unicast IPv6 address that has been allocated from a range of public globally unique IP addresses, as registered through IANA/ICANN, its member agencies, and other registries or ISPs.
A: Global Unicast Address

Q: A type of IPv6 unicast address meant as a replacement for IPv4 private addresses.
A: unique local address

Q: An IPv6 prefix that defines an IPv6 address block made up of global unicast addresses, assigned to one organization, so that the organization has a block of globally unique IPv6 addresses to use in its network.
A: global routing prefix

Q: Which type of IPv6 address is this?: 2003::
A: Global Unicast (IPv6 public)

Q: Which type of IPv6 address is this?: FD00::1
A: Unique Local

Q: Which type of IPv6 address is this?: FF02::1
A: Multicast:
All nodes on the local network segment

Q: Which type of IPv6 address is this?: FE80::1
A: Link-Local

Q: The IPv6 global routing prefix is generally ____ bits in length, and the subnet ID is ____ bits in global unicast address.
A: 48, 16

Q: Can use this to automatically generate a host address using the host MAC address by putting FFFE in the middle of the mac address and then inverting the 7th bit in the first byte of the host portion of the address.
A: EUI64/Extended Unique Identifier-64 bit

Q: Multicast address ________ is used by all IPv6 hosts on the link.
A: FF02::1

Q: Multicast address ________ is used by all OSPFv3 routers.
A: FF02::5

Q: Multicast address ________ is used by all EIGRPv6 routers.
A: FF02::A

Q: Multicast address ________ is used to send packets to all IPv6 routers on a link.
A: FF02::2
ff01::2 → All routers in the interface-local
ff02::2 → All routers in the link-local
ff05::2 → All routers in the site-local

Q: For IPv6, what is the difference between a link-local address and a unique local address?
A: Link-local addresses cannot be routed. (FE80::)