3.2-->

Question 1

what is Dual Stack?

Answer 1

both ipv4 and ipv6 work together on a host

Question 2

what is Tunneling?

Answer 2

encapsulates an ipv6 inside an inpv4 packet so that ipv6 data can be sent over ipv4 networks.

Question 3

what is ISATAP?

Answer 3

ISATAP: Intera site automatic addressing protocol:

*provides ipv6 over a private ipv4 network within a site..

Question 4

what does an ISATAP address look like if the host address is -> 192.168.1.20

Answer 4

FE80:5EFE:192.168.1.20

**the 1st 2 quartets

Question 5

what is Teredo-Tunneling? when is it used

Answer 5

used to establish tunnel between ipv6 hosts to communicate over ipv4 private or public network. uses NAT-T.

Question 6

PortProxy is what?

Answer 6

allows ipv4 host to communicate with a ipv6 host. only works with protocols that don’t use the address or port tcp info.

Question 7

how does an ipv4 comparable address look?

Answer 7

ten octets, last 4 octets have an ipv4 address. formateed as: 0:0:0:0:0:0:(device ip)

Question 8

what is an AAAA record and what does it do?

Answer 8

AAAA Record: maps a DNS host name to a 128 bit ipv6 address.

Question 9

what is an A record and what does it do?

Answer 9

A Record: maps a DNS host name to a 32 bit ipv4 address.

Question 10

PTR Record?

Answer 10

PTR Record: maps an ip address to a host name.

Question 11

IPV6 addresses used with ISATAP use what prefix? in the address..

Answer 11

ISATAP prefix: FE80::/16

Question 12

what is Teredo and what is the prefix in the address?

Answer 12

Teredo is also known as NAT-T (Traversal), used to create a tunnel between ipv6 hosts over an ipv4 network.
**Prefix would be the 2001::/32 prefix followed by the ipv4 public address converted to hexadecimal.

Question 13

what is LLMNR?

Answer 13

LLMNR: used to resolve host names without a dns server. it is a name resolution protocol that is used when the DNS is down.

Question 14

how does Teredo Tunneling work?

Answer 14

Teredo Tunneling: configured on each host and works through NAT to allows ipv6 hosts to communicate through a tunnel over an ipv4 address.

Question 15

what does a PTR record do?

Answer 15

PTR Record: maps an ip address to a host name on a DNS server.(reverse look-up records). can be for IPv4 or IPV6

Question 16

what is APIPA?

Answer 16

APIPA: Automatic private ipv4 addressing: used when a DHCP server is not configured or working on the network. the APIPA- hosts select their own ipv4 addresses within a range.

Question 17

how does Stateless Autoconfiguration work?

Answer 17

clients automatically generate an interface ID, learn the subnet prefix and default gateway through neighbor discovery protocol. **can not also automatically get the DNS server address, this must be manually entered.

Question 18

why is the Netsh command used in the command prompt?

Answer 18

netsh: used to manually config network interface info. ip address, default gateway, DNS server address.

Question 19

diff between classful and classless addresses?

Answer 19

classful: the ip address comes from one of the 3 ip addresses: A,B or C (192.168.0.0/16)
* *ClassLess: not from the ip address classes A-C.

Question 20

what is the APIPA address range? when is it used by a computer?

Answer 20

used when the DHCP goes down. the range is 169.254.0.0 - 169.254.255.254