The answers each list a tunnel method and two consecutive IPv6 address quartets.Which answers identify a tunneling method that relies on an IPv4 address to be embedded into an IPv6 address, within the correct quartets listed?（）

单项选择题The following configuration exists on a router on one end of an IPv6 tunnel. Although the configuration added so far is correct, the configuration is incomplete. Which type of tunnel is most likely to be intended by the network engineer？（） interface loopback 1 ip address 192.168.1.1 255.255.255.255 interface tunnel 2 ipv6 address 2002:C0A8:10 1::1 64 tunnel source loopback 1

A. Automatic 6to4
B. Manually configured tunnel
C. ISATAP
D. GRE

多项选择题Which of the following IPv6 tunneling mechanisms support IPv6 IGP routing protocols?（）

A. Automatic 6to4
B. Manually configured tunnel
C. ISATAP
D. GRE

单项选择题An engineer is reviewing another engineers sample configuration for a GRE tunnel used to pass IPv6 traffiC. The tunnel ha s not yet been configured on the router. Which of the following commands is not required for the configuration to pass IPv6 traffic?（）

A. tunnel source
B. tunnel destination
C. tunnel mode
D. All these commands are requireD

单项选择题The following configura tion exists on a router on one end of an IPv6 tunnel. Which type of tunnel is created by this configuration?（） interface loopback 1 ip address 1.1.1.1 255.255.255.255 interface tunnel 2 ipv6 address 2000::1:: 64 tunnel source loopback 1 tunnel destina tion 2.2.2.2 tunnel mode ipv6ip ipv6 eigrp 1

A. Automatic 6to4
B. Manually configured tunnel
C. ISATAP
D. GRE

单项选择题A client host uses IPv4 to communicate with one ser ver and IPv6 to communicate with another.Which of the following IPv6 coexistence features is likely at work on the host?（）

A. Native IPv6
B. Point - to -point tunnels
C. Multipoint tunnels
D. NAT - PT
E. Dual stacks