多項選擇題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.


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1.多項選擇題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.

2.多項選擇題Which two devices can interfere with the operation of a wireless network because they operate on similar frequencies?（）

A.copier
B.microwave oven
C.toaster
D.cordless phone
E.IP phone
F.AM radio

4.多項選擇題What are two security appliances that can be installed in a network?（）

A.ATM
B.IDS
C.IOS
D.IOX
E.IPS
F.SDM

5.多項選擇題Which of the following describes the roles of devices in a WAN?（）

A. A CSU/DSU terminates a digital local loop.
B. A modem terminates a digital local loop.
C. A CSU/DSU terminates an analog local loop.
D. A modem terminates an analog local loop.
E. A router is commonly considered a DTE device.
F. A router is commonly considered a DCE device.

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