单项选择题
A. traceroute address
B. tracert address
C. ssh address
D. telnet address
单项选择题 A company has a small network,consisting of a single switch and a single router.The switch has been configured with two vlans,and route-on-a-stick is being configured on the router for inter-vlan routing.A trunk is configured to connect the switch to the router.What is the minimum number of router subinterfaces that are required for all the vlans to communicate?（）
单项选择题 A network administrator receives an error message while tring to configure the Ethernet interface of a router with IP address 10.24.24.24/29.which statement explains the reason for this issue?（）
单项选择题 What value is primarily used to determine which port becomes the root port on each nonroot switch in a spanning-tree topology?（）