单项选择题
A. root authentication
B. default gateway
C. hostname
D. management services
多项选择题 Which two fields are found in an Ethernet frame header?（）
多项选择题 You have been asked to configure your router to send link-related SNMP trap notifications to the network managemetn system (NMS) located at address 172.16.17.1.Which two commands are required?（）
单项选择题 Which command is used to enable access to J-Web using HTTPS?（）