就业课程
认证课程
企业课程5、.Which two of these statements are true of IPv6 address representation? (Choose two.)
以下关于IPv6地址代表的描述，哪两个是正确的?
A. There are four types of IPv6 addresses: unicast, multicast, anycast, and broadcast.
IPv6有四种类型：单播，组播，anycast，和广播 。错 IPV6 没有广播
B. A single interface may be assigned multiple IPv6 addresses of any type.
一个单独的接口可能指派给多种IPv6地址的任何类型。
C. Every IPv6 interface contains at least one loopback address.
每一个IPv6接口至少包括一个环回地址
D. The first 64 bits represent the dynamically created interface ID.
前64为代表接口ID的动态产生。错 应该是后64位
E. Leading zeros in an IPv6 16 bit hexadecimal field are mandatory.
重要的0在一个IPv6 的16为十六进制区域内是必须写出来的。错。
Answer: BC
6、What are three basic parameters to configure on a wireless access point? (Choose three.)
在一个无线接入点上，哪三个基本参数需要配置?
A. SSID
B. RTS/CTS
C. AES-CCMP
D. TKIP/MIC
E. RF channel
F. authentication method
Answer: AEF
除了AEF 剩下的都是可选配置
7、Which of the following correctly describe steps in the OSI data encapsulation process? (Choose two.)
下列哪一项正确描述OSI数据封装过程中的步骤?(选择两个。)
A. The transport layer divides a data stream into segments and may add reliability and flow control information.
传输层将数据分段 添加了对数据的传输控制信息 具有可靠性， 正确
B. The data link layer adds physical source and destination addresses and an FCS to the segment. 数据链路层增加源地址和目标地址，同时增加现场校验序列到数据段中 错 应该为数据帧中
C. Packets are created when the network layer encapsulates a frame with source and destination host addresses and protocol-related control information.
当网络层封装包括源地址，目标主机地址和有关协议的控制信息的帧时，数据包被创建网络层封装的是packet而不是frame。因此错
D. Packets are created when the network layer adds Layer 3 addresses and control information to a segment.
当网络层增加三层地址和控制信息组成数据段是，数据包被创建。 正确
E. The presentation layer translates bits into voltages for transmission across the physical link.
Answer: AD 表示层将比特转化成电压通过物理链路。错
