IS07498-2从体系结构的观点描述了可选的安令服务、特定的安全机制和普遍性的安全机制，它们分别是(43)种。可信计算机系统评估准则(TCSEC)共分4类7级：(44)。我国发布的GB17895-1999计算机信息系统安全保护等级划分准则规定了计算机信息系统安全保护能力的(45)个等级，计算机系统可信计算机满足访问控制器需求的等级是(46)级。完整的信息安全保障体系应包括(47)。

(67)

(66)

(64)

(65)

(62)

Bluetooth is a universal radio interface in the(71)frequency hand that enables portable electronic devices to connect and communicate wirelessly via short-range, ad hoc networks. Each unit can simultaneously communicate with up to(72)other units per piconet. Moreover, each unit can simultaneously(73)to several piconets. Eliminates the need for wires, cables and connectors for and between cordless or mobile phones, modems, headsets, PDAs, Computers, printers, projectors, local area networks, and so on, and paves the way for new and completely different devices and applications. Technology Characteristics(74)symbol rate exploits maximum available(75)bandwidth。

(61)

(60)

(59)

(57)