多項選擇題Which three approaches can be used while migrating from an IPV4 addressing scheme to an IPV6 scheme.（）

A. statically map IPV4 address to IPV6 addresses
B. configuration IPv4 tunnels between IPV6 islands
C. use DHCPv6 to map IPV4 addresses to IPV6 addresses
D. use proxying and translation to translate IPV6 packets into IPV4 packets
E. configure IPV6 directly
F. enable dual-stack routing


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1.多項選擇題Which two subnetworks would be included in the summarized address of 172.31.80.0 /20?（）

A.172.31.17.4/30
B.172.31.51.16/30
C.172.31.64.0/18
D.172.31.80.0/22
E.172.31.92.0/22
F.172.31.192.0/18

2.多項選擇題What two statistics appear in show frame-relay map output?（）

A. The number of FECN packets that are received by the router
B. The number of BECN packets that are received by the router
C. The ip address of the local router
D. The value of the local DLCI
E. The status of the PVC that is configured on the router

3.多項選擇題It has become necessary to configure an existing serial interface to accept a second Frame Relay virtual circuit.Which of the following processes are required to accomplish this task?（）

A. configure static frame relay map entries for each subinterface network.
B. remove the ip address from the physical interface
C. create the virtual interfaces with the interface command
D. configure each subinterface with its own IP address
E. disable split horizon to prevent routing loops between the subinterface networks
F. encapsulate the physical interface with multipoint PPP

4.多項選擇題Which two privileged mode cisco ios commands can be used to determine a cisco router chassis serial number?（）

A.show inventory
B.show flash：filesys
C.dirflash：include chassis
D.show diag
E.show controllers

5.多項選擇題Which two statements are characteristics of a distance vector routing protocol?（）

A. RIP is an example of distance vector routing protocols.
B. Updates are periodic and include the entire routing table.
C. Routing updates are sent only after topology changes
D. The protocol can be useful in hub-and-spoke and hierarchical networks.
E. Convergence is usually faster than with link state protocols
F. Each router has its own view of the topology