多项选择题
Which two benefits are provided by using a hierarchical addressing network addressing scheme? （）
A.reduces routing table entries B.auto-negotiation of media rates C.efficient utilization of MAC addresses D.dedicated communications between devices E.ease of management and troubleshooting
单项选择题 Which dose the frame-relay interface-dlinterface-dlcci command configure?（）
多项选择题 Which two tasks does the Dynamic Host Configuration Protocol perform?（）
多项选择题 What are two characteristics of Telnet (Choose two.)（）。
