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CCNA题库
考试代号： 640-802
考试时间：英文110+30=140分钟
通过分数： 825
题库版本： V104.4
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CCNA（640-802）题库V104.4
CCNA（640-802）题库V104.4（情人节版）
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V104系列是官方的终结版本，以后不会再出V105 V106 V108等等
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========================================
更新容：
V104.1修正V104中错误题目，确定经典争议题目答案；
V104.2增加拖图题并可完美模拟考试，VCE题库增加中文注释；
V104.3针对思科CCNA考试变题，更新考试新增题目93Q,更新V104.2实验题；
V104.4增加全文中文注释，汇总V104.3九次更新，删除部分旧题目，为目前最新官方正版题库；
2011.8.1 增加每日新题，修订部分错误。
2012.2.14 情人节版
增加5道新题，分别是519、520、521、522、523题
修改176题、375题、443题、482题答案错误
修改59题、88题、453题、107题、270题注释错误
增加个别疑难拖图题注释，优化实验题
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QUESTION 1
When you are logged into a switch, which prompt indicates that you are in privileged
mode?
(当您登录到交换机，哪种提示表明你在特权模式？)
A. %
B.
C. >
D. $
E. #
Answer: E
Section: Chapter 4: Introduction to Cisco IOS
Explanation/Reference:
特权模式就是#提示符
QUESTION 2
Which command shows system hardware and software version information?
(哪些命令显示系统硬件和软件的版本信息？) ..
.下载可编辑. A. show configuration
B. show environment
C. show inventory
D. show platform
E. show version
Answer: E
Section: Chapter 4: Introduction to Cisco IOS
Explanation/Reference:
查看系统的软件和硬件信息使用的命令是show version
QUESTION 3
Cisco Catalyst switches CAT1 and CAT2 have a connection between them using ports
FA0/13. An 802. 1Q trunk is configured between the two switches. On CAT1, VLAN
10 is chosen as native, but on CAT2 the native VLAN is not specified.What will
happen in this scenario?
(思科 Catalyst 交换机 CAT1 和 CAT2 有它们之间的连接使用端口
FA0/13。两个交换机之间用802.1Q中继配置，CAT1做为VLAN10的主机，但在 CAT2 上的本地 VLAN 未指定。在这种情况下会发生什么？)
A. 802.1Q giants frames could saturate the link.
B. VLAN 10 on CAT1 and VLAN 1 on CAT2 will send untagged frames.
C. A native VLAN mismatch error message will appear.
D. VLAN 10 on CAT1 and VLAN 1 on CAT2 will send tagged frames.
Answer: C
Section: Chapter 10: VLAN
Explanation/Reference:
如果两边native不匹配的话.switch将报native不匹配的日志信息
QUESTION 4
Which command would correctly configure a serial port on a router with the last
usable host address in the 192.216.32.32/29 subnet?
（哪个命令正确地将最后的可用主机地址，192.216.32.32/29 子网的路由器上配置的串行端口？）
A. Router(config-if)# ip address 192.216.32.38 255.255.255.240
B. Router(config-if)# ip address 192.216.32.39 255.255.255.224
C. Router(config-if)# ip address 192.216.32.63 255.255.255.248
D. Router(config-if)# ip address 192.216.32.39 255.255.255.248
E. Router(config-if)# ip address 192.216.32.63 255.255.255.248
F. Router(config-if)# ip address 192.216.32.38 255.255.255.248
Answer: F
Section: Chapter 4: Introduction to Cisco IOS
Explanation/Reference:
192.216.32.32/29它的块大小为8掩码为255.255.255.248地址围为192.216.32.32-39
QUESTION 5
The network default gateway applying to a host by DHCP is 192.168.5.33/28. Which
option is the valid IP address of this host?(应用到由 DHCP 主机的网络默认网关是 192.168.5.33\/28。哪个选项是有效的主机IP 地址？)
A. 192.168.5.55
B. 192.168.5.47
C. 192.168.5.40
D. 192.168.5.32
E. 192.168.5.14 ..
.下载可编辑. Answer: C
Section: Chapter 3: IP Addressing and VLSM
Explanation/Reference:
考点：考查VLSM
192.168.5.33/28所在网段的围是192.168.5.32--192.168.5.47/28
A：超出围
B：广播地址
C：正确
D：网络号
E：超出围
QUESTION 6
Which two addresses can be assigned to a host with a subnet mask of 255.255.254.0?
(Choose two.){哪两个地址可以分配给与子网掩码 255.255.254.0 的主机？}
A. 113.10.4.0
B. 186.54.3.0
C. 175.33.3.255
D. 26.35.2.255
E. 17.35.36.0
Answer: BD
Section: Chapter 3: IP Addressing and VLSM
Explanation/Reference:
考点：考查VLSM
A：网络号
B/D：正确
C：广播地址
E：网络号
QUESTION 7
The network administrator has asked you to check the status of the workstation's
IP stack by pinging the loopback address. Which address would you ping to perform
this task?
{网络管理员已要求您通过 ping 环回地址检查工作站的 IP 堆栈的状态。您要执行此任务将 ping 哪个地址？}
A. 10.1.1.1
B. 127.0.0.1
C. 192.168.0.1
D. 239.1.1.1
Answer: B
Section: Chapter 3: IP Addressing and VLSM
Explanation/Reference:
考点：使用ping来检测主机的IP栈。
ping 127.0.0.1实现。
QUESTION 8
Workstation A has been assigned an IP address of 192.0.2.24/28. Workstation B has
been assigned an IP address of 192.0.2.100/28. The two workstations are connected
with a straight-through cable. Attempts to ping between the hosts are unsuccessful.
What two things can be done to allow communications between the hosts? (Choose
two.)
{A 工作站已分配 IP 地址为 192.0.2.24\/28。B 工作站已分配 IP 地