多项选择题

A national retail chain needs to design an IP addressin……

A national retail chain needs to design an IP addressing scheme to support a nationwide network. The company needs a minimum of 300 sub-networks and a maximum of 50 host addresses per subnet. Working with only one Class B address, which of the following subnet masks will support an appropriate addressing scheme?（）

A.255.255.255.0
B.255.255.255.128
C.255.255.252.0
D.255.255.255.224
E.255.255.255.192
F.255.255.248.0

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多项选择题Which three are characteristics of an IPV6 anycast address?（）

A.any-to-many communication model
B.delivery of packets to the group interface that is closest to the sending device
C.one-to-many communication model
D.the same address for multiple devices in the group
E.one-to-nearest communication model
F.a unique IPV6 address for each device in the group

单项选择题Which option is a valid IPv6 address?（）

A.2001：0000：130F：：099a：：12a
B.2002：7654：A1AD：61：81AF：CCC1
C.FEC0：ABCD：WXYZ：0067：：2A4
D.2004：1：25A4：886F：：1

单项选择题Refer to the exhibit. In this VLSM addressing scheme, what summary address would be sent from routerA?（）

A.172.16.0.0/16
B.172.16.0.0/20
C.172.16.0.0/24
D.172.32.0.0/16
E.172.32.0.0/17
F.172.64.0.0/16

多项选择题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

单项选择题How many bits are contained in each field of an IPv6 address？（）

A.24
B.4
C.8
D.16