人们在法定条件下，必须作出某种行为的法律规范，称为（）规范。 ["法定性","禁止性","义务性","授权性"]
The RiskRating for an IPS signatureis calculatedusing four primary components. Select the four components below. （） [" SignatureFidelity Rating"," Alert Severity Rating"," Exploit Probability Rating"," Target Value Rating"," Attack Relevancy Rating"]
Which are three advantages of PPPoA implementation？ （） ["NAP and NSP provide secure access to corporate gateways without managing end-to-end PVCs.NAP and NSP use Layer 3 routing，Layer 2 Forwarding，or Layer 2 Tunneling Protocol tunnels.Hence，they can scale their business models for selling wholesale service","The NSP can oversubscribe by deploying idle and session timeouts using an industry standard RADIUS server for each subscriber","Only a single session per CPE on one virtual channel （VC).The username and password are configured on the CPE， so all users behind the CPE for that particular VC can access only one set ofservices. Users cannot select different sets of services， although using multiple VCs and establishing different PPP session on different VCs is possible","If a single IP address is provided to the CPE， and NAT or PAT is implemented，certain applications such as IPTV，which embed IP information in the payload， well not work. Additionally，if an IP subnet feature is used，an IP address also has to be reserved for the CPE","PPPoA can use the features on the Cisco Service Selection Gateway （SSG）"]
Which statement describes the XML management interface in Cisco NX-OS Software？（） ["The following XML-based NETCONF operations are supported in NX-OS SoftwarE˙close-session copy-config delete-config and edit-config","The following XML-based NETCONF operations are supported in NX-OS SoftwarE˙close-session copy-config edit-config and kill-session","NX-OS Software supports up to a maximum of 16 concurrent XML sessions","Only show commands are supported via the XML management interface in NX-OS Software","The NX-OS implementation of the XML-based NETCONF requires SSH to be used for communication with the device"]
算缗告缗
A律压缩特性一般A的取值为（）。
