Which of the following are true of Ethernet technology?
A．Hosts use a logical ring topology.
B．Hosts use a logical bus topology
C．Hosts must wait for an electronic signal to transfer data.
D．Hosts are directly connected to a wiring concentrator called a MSAU.
E．None of the above
第1题：
A.Bus
B.Mesh
C.Multipath
D.Ring
第2题：
Which of the following is true according to the passage?
[A] Flu vaccines now mainly use egg-based technology.
[B] A bird influenza has once circulated among humans.
[C] Safety can be greatly improved with cell-culture vaccines.
[D] Modern vaccine production methods are to replace egg-based methods.
第3题：
●A 10BaseT Ethernet LAN has (73).
(73)
A. a star topology
B. a ring topology
C. a bus topology
D. a linear topology
第4题：
Which of the following are considered common elements found in a set of network documents？（Choose all that apply.）（）
第5题：
第6题：
A.CSMA/CD
B.CSMA/CA
C.CHAP
D.Token passing
第7题：
第8题：
A.DSL
B.Ethernet
C.DOCSIS
D.SONET
第9题：
Which of the following describes the purpose of a network topology diagram?（）
第10题：
Which of the following statements are true for routers but not true for Layer 3 Ethernet switches？（Choose all that apply.）（）