题目内容

All communications between a company's internal networks and the outside world pass through this server.

A. Base station
B. Node
C. Supercomputer
D. Proxy

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Remote users can connect to an organization's network through this type of secure private connection.

A. VPN
B. DSL
C. WWAN
D. P2P

This type of network topology does not use a specific physical layout.

A. Hybrid
B. Hierarchical
C. Mesh
D. Tree

The actual connecting or transmission medium that carries the message in a communication system is called the _______.

A. communication channel
B. data transmission
C. communication system
D. connection device

_______ is a high-frequency transmission medium that has a single solid-copper core.

A. Twisted pair
B. Coaxial cable
C. Microwave
D. Fiber-optic cable