OPC（DataExchange）数据交换是相对于OPCDA的Client-Server通信模式提出的（）通信模式。

A:Client-Server B:Client-Client C:Browser-Server D:Server-Server

Having the client assist in the project planning ______.

A:is not always recommended since the client does not have adequate knowledge of project management B:enables better planning since they are familiar with project insights C:provides only some understanding, but usually the client dealing with the project has only limited authority D:usually confuses the situation

To access information on the Intemet，a user must first log on to the client computer’S______network．

A:server B:client C:host D:self

SOCKS is a genetic proxy protocol for TCP/IP-based networking, applications. SOCKS includes two (21) , the SOCKS server and the SOCKS client. The SOCKS server is implemented at the application layer. The SOCKS client is implemented between applications and the (22) layer. When an application client needs to connect to an application server, the client connects to a SOCKS proxy server. The proxy server connects to the application server instead of the client, and (23) data between the client and the application server. For the application server, the proxy server is the (24) . SOCKS is also one of the popular (25) to network firewalls. Because of its simplicity and flexibility, SOCKS has been used as genetic application proxy in virtual private network (VPN), and for extranet applications.

A:workstation B:user C:customer D:client

在Web的Client/Server工作环境中，( )起着控制的作用。

A:Web服务器 B:Web浏览器 C:HTTP协议 D:HTML语言

Web的Client/Server工作环境中，起着控制作用的是( )。

A:Web服务器 B:Web浏览器 C:Web客户端 D:HTML语言

Web的Client/Server工作环境中，起着控制作用的是( )。

A:Web服务器 B:Web浏览器 C:Web客户端 D:HTML语言

在Web的Client/Server工作环境中，( )起着控制的作用。

A:Web服务器 B:Web浏览器 C:HTTP协议 D:HTML语言