JN0-101單項(xiàng)選擇題每日一練(2019.01.06)

來源：考試資料網(wǎng)

1 In the MAC address 00:90:69:9f.ea:46, what represents the Organizationally Unique Identifier (OUI)?（）

2 Refering to the exhibit, which statement is correct?（）

3 Which two statements are true of a network mask?（）

4 What is the purpose of a network mask?（）

5 Which operational mode command can be used to synchronize the local system with an NTP server?（）