CCNA系列認(rèn)證CCNA(640-802)單項(xiàng)選擇題每日一練(2019.10.22)

來源：考試資料網(wǎng)

1 What will happen if a private IP address is assigned to a public interface connected to an ISP?（）

2 If an Ethernet port on a router was assigned an IP address of 172.1.1.1/20,what is the maximum number of hosts allowed on this subnet?（）

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3 Which command helps a network administrator to manage memory by displaying flash memory and NVRAM utilization?（）

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4 What is the function of the command switchport trunk native vlan 999 on a Cisco Catalyst switch?（）

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5 In the implementation of VLSM techniques on a network using a single Class C IP address, which subnet mask is the most efficient for point-to-point serial links? （）

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