CCNA系列認(rèn)證CCNA(640-802)多項(xiàng)選擇題每日一練(2019.10.23)

來源：考試資料網(wǎng)

1 Which two subnetworks would be included in the summarized address of 172.31.80.0 /20?（）

2 Given a subnet mask of 255.255.255.224, which of the following addresses can be assigned to network hosts?（）

3 Which two benefits are provided by creating VLANs?（）

4 Which are valid modes for a switch port used as a VLAN trunk? (Choose three.)（）

5 Which of the following are types of flow control? (Choose three.)（）