【导读】
不凡考网发布2021计算机思科认证网络工程师实战模拟每日一练(04月22日)相关信息，更多2021计算机思科认证网络工程师实战模拟每日一练(04月22日)的相关资讯请访问不凡考网计算机类考试频道。
1. [单选题]Given that you have a class B IP address network range, which of the subnet masks below will allow for 100 subnets with 500 usable host addresses per subnet?
A. 255.255.0.0
B. 255.255.224.0
C. 255.255.254.0
D. 255.255.255.0
E. 255.255.255.224
2. [多选题]You are bringing up a new Ezonexam switch, and wish to connect it via a trunk to another switch from a different vendor, which uses the IEEE standard for the trunking method. When setting the encapsulation type on the trunk, what should you configure on the Cisco switch?
A. Switch(config) switchport trunk encapsulation isl
B. Switch(config) switchport trunk encapsulation ietf
C. Switch(config-if) switchport trunk encapsulation isl
D. Switch(config-if) switchport trunk encapsulation ietf
E. Switch(config-if) switchport trunk encapsulation dot1q
3. [多选题]Regarding the extended ping command; which of the statements below are true?(Select all valid answer choices)
A. The extended ping command is supported from user EXEC mode.
B. The extended ping command is available from privileged EXEC mode.
C. With the extended ping command you can specify the TCP and UDP port to be pinged.
D. With the extended ping command you can specify the timeout value.
E. With the extended ping command you can specify the datagram size.
4. [单选题]Why might the Ezonexam network administrator set the configuration register to 0x2142 on a 2600 series Cisco router?
A. To boot the IOS from ROM
B. To reset the console password
C. To upload a new version of the configuration file
D. To upload a new version of the IOS
E. To allow a new memory upgrade to be recognized by the router
5. [单选题]下列哪个network命令会告知此路由器开始使用IP地址为10.1.1.1、10.1.100.1和10.1.120.1的接口上的OSPF（）
A. network 10.0.0.0 255.0.0.0 area 0
B. network 10.0.0.0 0.255.255.255 area 0
C. network 10.0.0.1 0.0.0.255 area 0
D. network 10.0.0.1 0.0.255.255 area 0
