【导读】
布丁学网发布2022思科认证每日一练(08月28日),更多思科认证的每日一练请访问布丁学网计算机类考试频道。
1. [单选题]当配置一个CISCO的路由器时,缺省的DR和BDR优先级是()。
B. 1
C. 16
D. 255
2. [单选题]IP地址为:192.168.50.70,掩码为:255.255.255.248,则该IP地址所在子网的广播地址为()
A. 192.168.50.32
B. 192.168.80.64
C. 192.168.50.96
D. 192.168.50.71
3. [单选题]关于帧中继(frame relay)的说法,正确的是()
A. 速率最大为1Mbit/s
B. 不提供差错校验功能
C. 可以偷占带宽
D. 数据传输质量高于DDN
4. [单选题]网关的功能()
A. 过滤数据包
B. 不同网段通信
C. 校验数据帧
D. 把数据封装成“段”
5. [多选题]The Ezonexam network administrator needs to determine what LAN devices to install on the Ezonexam network. What are two advantages of using Layer 2 Ethernet switches over hubs? (Choose two)
A. Allowing simultaneous frame. transmissions
B. Increasing the size of broadcast domains
C. Increasing the maximum length of UTP cabling between devices
D. Filtering frames based on MAC addresses
E. Decreasing the number of collision domains