多选题Which two of these statements are true of IPv6 address representation? （）AThere are four types of IPv6 addresses: unicast, multicast, anycast, and broadcast.BA single interface may be assigned multiple IPv6 addresses of any type.CEvery IPv6 interface c

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第3题：

What is the difference between the IPv6 addresses ：：/0 and ：：/128？（）

• A、：：/0 is the unspecified address， and ：：/128 is the multicast address
• B、：：/0 is the unicast address， and ：：/128 is the anycast address
• C、：：/0 is the unicast address， and ：：/128 is the multicast address
• D、：：/0 is the anycast address， and ：：/128 is the multicast address
• E、：：/0 is the default route， and ：：/128 is the unspecified address
• F、：：/0 is the anycast address， and ：：/128 is the default address

正确答案:E

第4题：

Which two statements describe characteristics of IPv6 unicast addressing?（）

• A、Global addresses start with 2000::/3.
• B、Link-local addresses start with FE00:/12.
• C、Link-local addresses start with FF00::/10.
• D、There is only one loopback address and it is ::1.
• E、If a global address is assigned to an interface, then that is the only allowable address for the interface.

正确答案:A,D

第5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

正确答案:B,D,E

第6题：

Which statement about IPv6 is true?（）

• A、Addresses are not hierarchical and are assigned at random.
• B、Only one IPv6 address can exist on a given interface.
• C、There are 2.7 billion addresses available.
• D、Broadcasts have been eliminated and replaced with multicasts.

正确答案:D

第7题：

Which two statements are true about the primary address on an interface? （）

• A、It is the address used by default as the local address for broadcast and multicast packets sourced locally and sent out of the interface
• B、You use the primary address when you have multiple IP addresses belonging to the same subnet on the same inteface
• C、It can be useful for selecting the local address used for packets sent out of unnumbered interfaces when multiple non-127 addresses are configured on the loopback interface
• D、By default, the primary address on an interface is selected as the nmerically highest local address configured on the interface

正确答案:A,C

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第14题：

Which two statements are true about using IPv4 and IPv6 simultaneously on a network segment? （）

• A、IPv6 allows a host to create its own IPv6 address that will allow it to communicate to other devices on a network configured via DHCP. IPv4 does not provide a similar capability for hosts.
• B、IPv6 provides for more host IP addresses but IPv4 provides for more network addresses.
• C、Hosts can be  configured to receive both IPv4 and IPv6 addresses via DHCP.
• D、Host configuration options for IPv4 can be either statically assigned or assigned via DHCP.Host configuration options for IPv6 can be statically assigned only.
• E、IPv4 and IPv6 addresses c an be simultaneously assigned to a host but not to a router interface.

正确答案:A,C

第15题：

Which two statements are true regarding interface properties? （）

• A、MTU and speed must be configured under each unit.
• B、Physical parameters such as MTU, duplex mode, and speed are configured under the interface name.
• C、IP and IPv6 addresses are configured under a unit-number.
• D、DLCI numbers, VPI/VCI values, and VLAN tags are physical parameters.

正确答案:B,C

第16题：

Which three causes could prevent a host from getting an IPv6 address with stateless autoconfiguration？（）

• A、The autoconfig command is missing from the router interface.
• B、IPv6 multicast routing is not enabled on the router interface.
• C、IPv6 unicast routing is not enabled on the router interface.
• D、The router interface is configured with a /63 mask.
• E、The router interface is configured with a /65 mask.

正确答案:C,D,E

第17题：

Which two of these statements are true of IPv6 address representation?（）

• A、There are four types of IPv6 addresses: unicast, multicast, anycast, and broadcast.
• B、A single interface may be assigned multiple IPv6 addresses of any type.
• C、Every IPv6 interface contains at least one loopback address.
• D、The first 64 bits represent the dynamically created interface ID.
• E、Leading zeros in an IPv6 16 bit hexadecimal field are mandatory.

正确答案:B,C

第18题：

Which two statements are true about the primary address on an interface?（）

• A、It is the address used by default as the local address for broadcast and multicast packets sourced locally and sent out of the interface.
• B、You use the primary address when you have multiple IP addresses belonging to the same subnet on the same interface.
• C、It can be useful for selecting the local address used for packets sent out of unnumbered interfaces when multiple non-127 addresses are configured on the loopback interface.
• D、By default, the primary address on an interface is selected as the numerically highest local address configured on the interface.

正确答案:A,C

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