南昌商学院南昌商学院CCNACCNA 四四课程期末考试试卷课程期末考试试卷 (A 卷)适用适用专业专业计计科科 02 级级考考试试所需所需时间时间120试试卷卷总总分分100考考试试日期日期11 月月 21 日日开卷开卷 / 闭闭卷卷闭闭卷卷成成 绩绩一、选择题（共一、选择题（共 4040 题，每题题，每题 2 2 分）分） 1、Which of the following devices can an administrator use to segment their LAN? (Choose all that apply) A. Hubs B. Repeaters C. Switches D. Bridges E. Routers F. Media Converters G. All of the above2、Within the TestKing office, The Sales and Production networks are separated by a router as shown in the diagram below:of the following statements most accurately describes the characteristics of the above networks broadcast and collision domains? (Select the two best answer choices) A. There are two broadcast domains in the network. B. There are four broadcast domains in the network. C. There are six broadcast domains in the network. D. There are four collision domains in the network. E. There are five collision domains in the network. F. There are seven collision domains in the network.系系别别： ： 专业专业班班级级： ： 姓名：姓名： 学号：学号： 装 订 线 3、Which of the following are benefits of segmenting a network with a router? (Select all that apply) A. Broadcasts are not forwarded across the router. B. All broadcasts are completely eliminated. C. Adding a router to the network decreases latency. D. Filtering can occur based on Layer 3 information. E. Routers are more efficient than switches and will process the data more quickly. F. None of the above.4、If a host on a network has the address 172.16.45.14/30, what is the address of the subnetwork to which this host belongs? A. 172.16.45.0 B. 172.16.45.4 C. 172.16.45.8 D. 172.16.45.12 E. 172.16.45.185、The subnet mask on the serial interface of a router is expressed in binary as 11111000 for the last octet. How do you express the binary number 11111000 in decimal? A. 210 B. 224 C. 240 D. 248 E. 2526、You have a Class C network, and you need ten subnets. You wish to have as many addresses available for hosts as possible. Which one of the following subnet masks should you use? A. 255.255.255.192 B. 255.255.255.224 C. 255.255.255.240 D. 255.255.255.248 E. None of the above7、Which of the following is an example of a valid unicast host IP address? A. 172.31.128.255./18 B. 255.255.255.255 C. 192.168.24.59/30 D. FFFF.FFFF.FFFF E. 224.1.5.2 F. All of the above8、The TestKing network was assigned the Class C network 199.166.131.0 from the ISP. If the administrator at TestKing were to subnet this class C network using the 255.255.255.224 subnet mask, how may hosts will they be able to support on each subnet? A. 14 B. 16 C. 30 D. 32 E. 62 F. 649、The 213.115.77.0 network was subnetted using a /28 subnet mask. How many usable subnets and host addresses per subnet were created as a result of this? A. 2 networks with 62 hosts B. 6 networks with 30 hosts C. 16 networks and 16 hosts D. 62 networks and 2 hosts E. 14 networks and 14 hosts F. None of the above10、The Testking network is shown in the diagram below:this diagram, OSPF is used as the routing protocol between the corporate office and the offices on the left side of the diagram. An ISDN link provides connectivity from the central corporate router to the remote salesoffice on the right side of the diagram. Which type of route should the corporate office use to reach the router on the right side of the diagram if the overhead on the ISDN link is to be kept to a minimum? A. A RIP route B. An OSPF route C. A static route D. A default route E. A dynamic route F. None of the above11、You are a network administrator and you need to implement a routing protocol on your network that provides: * Scalability * VLSM support * Minimal overhead * Support for connecting networks using routers of multiple vendors Which of the following routing protocol would best serve your needs? A. VTP B. RIP version 1 C. EIGRP D. OSPF E. IGRP F. CDP12、You need to configure a single router into load balancing traffic across 4 unequal cost paths. Which routing protocols can satisfy this requirement? (Select two) A. RIP v1 B. RIP v2 C. IGRP D. EIGRP E. OSPF F. ISIS13、Which of the following routing protocols do NOT support VLSM (variable length subnet masking)? (Choose all that apply). A. RIPv1 B. IGRP C. EIGRP D. OSPF E. ISIS F. RIPv214、You work as a network engineer at TestKing.com. You are required to allow establishment of a Telnet session with a router TestKingC. Which set command must be configured? A. TestKingC(config)# line console 0 TestKingC(configline)#enable password testkingB. TestKingC(config)# line console 0 TestKingC(configline)#enable secret testking TestKingC(configline)#loginC. TestKingC(config)# line console 0 TestKingC(configline)#password testking TestKingC(co