ipv6 flashcards

Question 1

What type of deployment is NAT64 typically used for?

Answer 1

Stateful

Question 2

What does NAT64 allow?

Answer 2

Allows IPv6-only clients access to the IPv4 internet

Question 3

What server is required for NAT64?

Answer 3

DNS64 server

Question 4

Is 6in4 stateful or stateless?

Answer 4

Stateless

Question 5

What does 6in4 allow?

Answer 5

Allows IPv6 sites to communicate over a shared IPv4-only network using p2p tunnels

Question 6

What is a benefit of the p2p nature of the 6in4 tunnel?

Answer 6

IGP adjacency possible

Question 7

Is 6to4 stateful or stateless?

Answer 7

Stateless

Question 8

How is 6to4 different from 6in4?

Answer 8

Uses p2mp tunnels with dynamically determined endpoints

Question 9

What address format does 6to4 use?

Answer 9

2002:::/48

Question 10

Is IGP adjacency possible with 6to4?

Answer 10

No, due to p2mp nature

Question 11

What is a key difference between 6RD and 6to4?

Answer 11

6RD does not require the 2002::/16 prefix

Question 12

Does 6RD require full mapping of IPv4 addresses?

Answer 12

No, routers can share a common subnet

Question 13

Is DS Lite stateful or stateless?

Answer 13

Stateful

Question 14

What does DS Lite allow?

Answer 14

Allows IPv4 customers to traverse an IPv6-only access network

Question 15

What does the AFTR device do in DS Lite?

Answer 15

Performs heavy stateful NAT

Question 16

Does the CPE perform NAT in DS Lite?

Answer 16

No, it tunnels IPv4 traffic to the AFTR device

Question 17

How does IPv6 traffic flow in DS Lite?

Answer 17

IPv6 traffic flows natively

Question 18

Is MAP stateful or stateless?

Answer 18

Stateless

Question 19

How is MAP different from DS Lite?

Answer 19

MAP has NAT on the CPE and the BR is stateless

Question 20

What does the CPE do in MAP?

Answer 20

Performs NAT with a given set of source ports

Question 21

What does this enable in MAP?

Answer 21

Multiple CPEs can NAT to the same public IPv4 address

Question 22

How does IPv6 traffic flow in MAP?

Answer 22

IPv6 traffic flows natively