IPv4 and IPv6 Addressing

IPv4 Address

a 32-bit hierarchical address that is made up of a network portion and a host

subnet mask

used to determine the network and host portions

Actual process to identify the host and network portions is called the (blank)

ANDing

Prefix Length

used to identify the subnet mask

Prefix length is the number of bits set to (blank) in the subnet mask

one

255.0.0.0

11111111.00000000.00000000.00000000/8

unicast

sending a packet to one destination IP address

broadcast

sending a packet to all other destination IP addresses

multicast

sending a packet to a multicast address group

These addresses are not unique and can be used internally within any network and are not globally routable

Private IPv4

Network Address Translation

translates private IPv4 to public IPv4

Loopback Address

commonly identified as only 127.0.0.1 and used on a host to test if TCP/IP is operational

Link Local Address

commonly known as automatic private IP addressing and is used by windows DHCP clients to self-configure when no DHCP servers are available

A problem with large broadcast domains is that these hosts can generate excessive broadcasts and negatively affect the network

True

Reasons for Subnetting

reduces overall network traffic and improves network performance

can be used to implement security policies between subnets

reduces number of devices affected by abnormal broadcast traffic

Broadcast

Unicast

multicast

Identify the network portion and host in the IP address

192.168.10.10

192.168.10- network

10- host

Which one is the IPv4 address and which one is the subnet mask

192.168.10.10

255.255.255.0

192.168.10.10 - IPv4 Address

255.255.255.0- subnet mask

IPv6 has

-a larger 128-bit address space

-340 undecillion addresses

-solves limitations w/ IPv4

-adds enhancements

IPv6 and IPv4 can coexist

true

Dual Stack

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

NAT64 allows IPv6 enabled devices to communicate w/ IPv4 enabled devices using a translation technique similar to NAT for IPv4

For rule 1 in address representation is to omit any leading 0’s

2001:0db8:1111:0000:0000:0000:0200

omit the leading zeros

2001: db8: 1111: 0: 0: 0: 200

IPV6 has 2 unicast addresses, what are they?

Global Unicast Address and Link-Local Address

What is a global unique address that is used on the internet?

2000

IPV6 unique local addresses are used for local addressing within a site, can be used for devices that will never need to access another network, are not globally routed

true

For address representation in IPv6 rule 2 is Double Colon in which you replace any single, contiguous string of one or more 16-bit hextets consisting of all zeros and can only be used once

2001: 0db8: 0000: 1111: 0000: 0000: 0000: 0200

2001: db8:0: 11111 :: 200

anycast

any IPv6 unicast address that can be assigned to multiple devices, a packet sent to an anycast address is routed to the nearest device having that address

IPv6 global unicast addresses are globally unique and routable on the IPv6 internet

true