多项选择题
You are the network consultant from passguide.com. You have been asked for which two features of optical networks allow data to be transmitted over extremely long distances?（）
A.Encryption
B.Minimal signal loss
C.Bandwidth limits
D.No EMI
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相关考题
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多项选择题
Which three are Cisco architectures?（）
A.collaboration
B.digital media
C.borderless networks
D.cloud computing
E.virtualization
F.consumerization -
多项选择题
What are five of the seven layers that are found in the OSI model?（）
A.application
B.protocol
C.session
D.transport
E.physical
F.gateway
G.data link -
单项选择题
Cisco Technical Support Services portfolio provide customers resources that help ensure that Cisco products operate efficiently, remain highly available, and benefit from up-to-date system software. Is it correct?（）
A.Yes
B.No
