單項選擇題Two islands of IPv6 networks that are running ISIS （IPv6 IGP） must be connected using a tunnel over anIPv4 network. Which tunneling method can be used to achieve this goal？（）

A.GRE tunnels
B.automatic 6 to 4 tunnels
C.ISATAP tunnels
D.manual tunnels （RFC 2893）


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1.多項選擇題Which two requirements to deploy 6PE and 6VPE solutions are mandatory？（）

A.MPLS is enabled on the core， distribution， and edge devices.
B.A triple stack is enabled on PE devices.
C.The network has at least six PE devices.
D.A dual stack is enabled on all the P and PE devices in a network.

2.多項選擇題Which two statements about DS-Lite are true？（）

A.IPv4 packets are carried over IPv6 tunnels to the LSN while IPv6 traffic is forwarded natively.
B.Ipv6 packets are carried over IPv4 tunnels to the LSN while IPv4 traffic is forwards natively.
C.The LSN performs NAT44 on private IPv4 source addresses.
D.DS-Lite does not perform any address translation.

3.單項選擇題Which configuration prevents traffic that is sourced from the unique local address scope to be sent out ofthe link to the upstream service provider？（）

A.interface Ethernet0/0  I.pv6 traffic-filter NoULA out  I.pv6 access-list NoULA  Deny ipv6 FC00：：/8 any  Permit ipv6 any any
B.interface Ethernet0/0  I.pv6 traffic-filter NoULA out  I.pv6 access-list NoULA  Deny ipv6 FC00：：/7 anyP  ermit ipv8 any any
C.interface Ethernet0/0  I.pv6 access-group NoULA out  I.pv6 access-list NoULA  Deny ipv6 FC00：：/8 anyP  ermit ipv6 any any
D.interface Ethernet0/0  I.pv6 access-group NoULA out  I.pv6 access-list NoULA  Deny ipv6 FC00：：/7 any  Permit ipv6 any any

4.單項選擇題Which information is carried in the OSPFv3 intra-area Prefix LSA？（）

A.all link-local addresses
B.all IPv6 prefix and topology information that OSPFv2 included in Router LSA and Network LSA
C.list of options associated with the link to all other routers attached to the link
D.all prefix-specific information that OSPFv2 included in Router LSA and Network LSA

5.單項選擇題Which statement about implementing the Cisco IPv6 provider Edge Router over MPLS is true？（）

A.6PE feature is supported over tunnels other than RSVP-TE tunnels
B.Core MPLS routers are supporting IPv6 ONLY
C.6PE feature is not supported over tunnels other than RSVP-TE tunnels
D.Core MPLS routers are supporting IPv4 only