Which of the following IPv6 transition methods requires all network devices to support IPv4 and IPv6?
A.
6to4 B.
Teredo C.
ISATAP D.
Dual stack.
D.
Which of the following IPv6 transition methods requires all network devices to support IPv4 and IPv6?
A.
6to4
B.
Teredo
C.
ISATAP
D.
Dual stack.
D.
The correct answer is D. Dual stack.
Explanation: IPv6 is the next generation Internet protocol that is designed to replace IPv4. However, IPv4 is still widely used and many devices and networks are still using it. Therefore, during the transition from IPv4 to IPv6, it is necessary to have a mechanism that allows the coexistence of both protocols. There are several transition methods that can be used to facilitate this coexistence.
Dual stack is a transition method that allows IPv4 and IPv6 to coexist on the same network. This method requires that all network devices, including routers, switches, and end devices, support both IPv4 and IPv6. With dual stack, each device is configured with both an IPv4 address and an IPv6 address. This allows communication to occur using either protocol.
The other three options, 6to4, Teredo, and ISATAP, are tunneling mechanisms that allow IPv6 packets to be transmitted over an IPv4 network. These mechanisms do not require all devices to support both IPv4 and IPv6.
6to4 creates an automatic IPv6-in-IPv4 tunnel between two IPv6-capable sites. It requires that at least one site have a public IPv4 address.
Teredo is a protocol that allows IPv6 traffic to be transmitted over an IPv4 network using UDP. It does not require any changes to the existing IPv4 infrastructure.
ISATAP (Intra-Site Automatic Tunnel Addressing Protocol) allows IPv6 traffic to be transmitted over an IPv4 network using a technique called tunneling. It requires the use of a special ISATAP router and can be used to connect IPv6 sites over an IPv4 network.
In summary, dual stack is the IPv6 transition method that requires all network devices to support both IPv4 and IPv6.