单项选择题

Which of the following uses PKI?（）

A.Blowfish
B.AES
C.PGP
D.3DES

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多项选择题

10GBase-T is backward compatible with which of the following? (Select TWO).（）

A. 10GBase-SW
B. 100Base-FX
C. 10GBase-LW
D. 100Base-T
E. 10Base-T

单项选择题

A technician is looking for an emergency connection solution not reliant on local data or power
services.
Which of the following should the technician implement?（）

A.Satellite
B.ADSL
C.ISDN
D.OC-3

单项选择题

All of the following will interfere with a 2.4GHz wireless phone EXCEPT:（）

A.Bluetooth.
B.802.11a.
C.802.11b.
D.802.11g.