数据库操纵功能实现对数据库中数据的基本操作，下列选项中不属于数据库操纵功能的是（）。

在通信专业中，描述网络模式的缩写词VPN的英文全称是（），“时隙”英文通常翻译为（）。

A communcitions protocal is a set of（）for exchanging information over a network.

A router uses its () to detemine where to forward the packets.

The Internet is a () system of interconnected computer networks that use the standard Internet protocol suits(TCP/IP) to serve several billion users worldwide。

IPv6 is currently in growing deployment around the world,() Internet address registries (RIRs) began to urge all resource managers to plan rapid adoption and conversion.