1. [单选题]OSI七层模型中,物理层的数据封装名称为()
A. 比特
B. 帧
C. 包
D. 段
2. [单选题]RIP协议负载均衡的路径数量为()
A. 无限制
B. 最多4条
C. 最多5条
D. 最多6条
3. [多选题]Why is full-duplex Ethernet superior to its single-duplex counterpart? (Select two answer choices.)
A. It uses inexpensive hubs
B. It operates without collisions
C. It operates on switches
D. It provides faster data transfer
E. It utilizes fewer wiring pairs