填空题13. Unauthorized network access is made easier when ______ are implemented on thenetwork. ______会在一定程度上降低攻击者入侵网络的难度。
填空题2. When using any-to-any communications with direct communication paths with lowlatency and high throughput, a ______ topology is typically the only choice. 当要求任意站点之间都能直接通信、数据传输延时较低且吞吐量较高时，一般采用______拓扑。
填空题 The SCF model defines the harden, isolate
填空题 In a VTI-based IPsec VPN
填空题 The ______ in a switch stores information
填空题 To participate in the PKI system
填空题19. SDEE uses a pull mechanism to pull alerts from IPS sensors over a/an ______ connection. SDEE采用拉模型(pull model)经由 ______ 连接将IPS传感器产生的告警信息“拉”出来。
填空题 In IOS versions before 15.0.1M
填空题 When Cisco SDEE notification is enabled
填空题18. The Cisco ISR can be used as an Easy VPN Remote ______. Cisco ISR能够配置扮演一台EZVPN远程______。
填空题7. ______ provides a mixture of security services for IPv4 and IPv6, such as confidentiality, authenticity, and integrity of IP data. ______适用于IPv4和IPv6，用于为网络中传输的IP数据提供机密性、真实性与完整性。
填空题10. The routing protocol detects both device and path failures using its ______. 路由协议使用______同时检测设备和路径的失效。
填空题26. Availability of security features on the Cisco IOS Software Catalyst switch is very ______ dependent. Cisco Catalyst交换机安全功能的可用性与______密切相关。
填空题1. ______ is an IEEE standard that provides a framework for authenticating and authorizing network devices connected to LAN ports and for preventing access in the event that the authentication fails. ______标准是一种基于端口的访问控制架构，它对连接到局域网端口的设备进行认证与授权，确保只有合法用户才能访问网络资源与服务。
填空题5. ______ VPNs are easier to deploy than a full tunneling remote access VPN，but they typically provide limited access to resources when compared to the full tunnel. ______ VPN比完全隧道远程访问VPN的部署要简单，但是相比于完全隧道VPN，这种模式只能提供有限的资源访问。
填空题16. An extended access list can use the number ranges of ______ and ______. 扩展ACL可以使用范围从______到______的列表编号。
填空题3. ______ control plane services are considered first, and then the conditioned traffic is passed through to ______ control plane services. 应首先考虑使用______控制面服务，再使用______控制面服务。
填空题25. ______ is a free event-monitoring solution for Cisco IPS events, including the IPS functionality provided by Cisco IOS Software running on a Cisco ISR. ______是一种免费的Cisco IPS事件监控解决方案，包括Cisco集成多业务路由器的IPS功能。
填空题 The security focuses of service availability
填空题15. The ______ is a virtual information storage location that contains collections of managedobjects. ______是一种虚拟的信息存储空间，可以将其视为一系列受控对象的集合。