A. security
B. privacy
C. faciliation
D. modem
第1题
Internet is a network of interconnected networks. This network has ()
A. people
B. computers
C. a information
D. software
第2题
Bluetooth is a proposed Radio Frequency specification for ()
A. short range
B. point-to-multipoint voice
C. data transfer
D. modem
第3题
There are two types of encryption:()
A. secret key
B. double keys
C. missing key
D. public key
第4题
Getting to a U.S. site from outside this country is quite ()
A. transparent
B. instantaneous
C. complicated
D. accurate
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