一位客户致电有线电视公司报告 Internet 连接不稳定。在尝试了几次配置更改后,技术人员决定向客户发送一个新的电缆调制解调器进行尝试。这代表什么故障排除技术? A customer called the cable company to report that the Internet connection is unstable. After trying several configuration changes, the technician decided to send the customer a new cable modem to try. What troubleshooting technique does this represent?
A. 自下而上 bottom-up
B. 分而治之 divide-and-conquer
C. 替代 substitution
D. 自上而下 top-down
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小型办公室使用无线路由器连接到电缆调制解调器以访问互联网。网络管理员接到电话,说一台办公室电脑无法访问外部网站。网络管理员执行的第一个故障排除步骤是从办公室计算机 ping 无线路由器。这代表哪种故障排除技术? A small office uses a wireless router to connect to a cable modem for internet access. The network administrator receives a call that one office computer cannot access external websites. The first troubleshooting step that the network administrator performs is to ping the wireless router from the office computer. Which troubleshooting technique does this represent?
A. 分而治之 divide-and-conquer
B. 替代 substitution
C. 自下而上 bottom-up
D. 自上而下 top-down
网络管理员可以成功 ping 通 www.cisco.com 上的服务器,但无法 ping 通位于其他城市 ISP 的公司 Web 服务器。哪个工具或命令可以帮助识别丢失或延迟数据包的特定路由器? A network administrator can successfully ping the server at www.cisco.com, but cannot ping the company web server located at an ISP in another city. Which tool or command would help identify the specific router where the packet was lost or delayed?
A. traceroute
B. netstat
C. ipconfig
D. telnet
技术人员将使用哪个命令来显示主机上的网络连接? Which command would a technician use to display network connections on a host computer?
A. ipconfig
B. tracert
C. nslookup
D. netstat
一旦在故障排除过程中解决了问题,下一步应该采取哪个步骤? Which step should be taken next once a problem is resolved during a troubleshooting process?
A. 运行远程访问软件。 Run remote access software.
B. 升级问题。 Escalate the problem.
C. 更新文档。 Update the documentation.
D. 查阅常见问题解答。 Consult an FAQ.