为了帮助考生们复习好《思科认证：CCNA认证学科》，我们考吧网整理了一些关于思科认证：CCNA认证模拟试题，本次汇编的模拟试题希望对你的考试有所帮助，预祝你考试顺利

1. An ISDN Basic Rate Interface (BRI) is composed of how many signaling channels? (1)

1) 1

2) 2

3) 3

4) 4

2. The highest capacity Ethernet technologies should be implemented in which areas of a network? (Choose three.) (3，4，5)

1) between workstation and backbone switch

2) between individual workstations

3) between backbone switches

4) between enterprise server and switch

5) on aggregate access links

3. Which layer of the OSI model covers physical media? (1)

1) Layer 1

2) Layer 2

3) Layer 3

4) Layer 4

5) Layer 5

6) Layer 6

4. While troubleshooting a network, you need to verify the liveness of hosts in the subnet 192.168.1.64/26. All of the hosts are able to reply to ping requests. How would you confirm the existing nodes using one single command?

当排除网络故障，你需要测试子网192.168.1.64/26的每一台主机都可ping 通 下面哪一个是 符合题意可以执行的《3》

1. ping 192.168.1.255

2. ping with sweep option

3. ping 192.168.1.127

4. ping 192.168.1.64

5. ping with broadcast option

5. Which mechanism can you use to achieve sub-second failover for link failure detection when a switched Ethernet media is used and loss of signal is not supported by the link provider?

有什么办法可以检测sub-second故障，当一个交换网络的媒体使用《4》

1. OSPF standard hellos

2. Cisco Discovery Protocol link detection

3. Bidirectional Forwarding Detection

4. Fast Link Pulse E. autonegotiation

编辑推荐：

2014年思科认证考试CCNA备考模拟试题汇总