cisco ccna 题库 CISCO CCNA网络工程师题库.doc

cisco ccna 题库 CISCO CCNA网络工程师题库 导读：就爱阅读网友为您分享以下“CISCO CCNA网络工程师题库”的资讯，希望对您有所帮助，感谢您对92的支持! QUESTION 140 A network interface port has collision detection and carrier sensing enabled on a shared twisted pair network. From this statement, what is known about the network interface port? A. This is a 10Mb/s switch port. B. This is a 100Mbs switch port. C. This is an Ethernet port operating at half duplex. D. This is an Ethernet port operating at full duplex. E. This is a port on a network interface card in a PC. Answer: C Section: Chapter 1: Introduction Explanation/Reference: 考点：考查冲突域的概念。在半双工网络中才存在冲突域。 综上所述选C QUESTION 141 A network administrator needs to allow only one Telnet connection to a router. For anyone viewing the confguration and issuing the show run command, the password for Telnet access should be encrypted. Which set of commands will accomplish this task? A. service password-encryptio