A.Network Interface Layer
B.Internetwork Layer
C.Host-to-Host Transport Layer
D.Application Layer
第1题
TCP/IP refers to a suite of ( ).
A、system
B、control units
C、application programs
D、data communication protocols
第2题
Benefits of using VPNs include the following except ( ).
A、cost savings
B、extending connectivity to telecommuters,mobile users and remote offices
C、low security
D、high reliability
第3题
Virtual Private Networks(VPN) are networks deployed on a ( ) network infrastructure.
A、public
B、private
C、local area
D、wide area
第4题
The most widely used personal computer software is ( ) software.
A、Communications
B、Word Processing
C、Database Management
D、Electronic Spreadsheets
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