Which two service components are in the plan phase？（） Proof of Concept。 Site Readiness Assessment。 Proposal Development。 Operations Readiness Assessment。 Account planning。
盲签名除具有一般数字签名的特点外，还有两个特征：即（）和（）。
If voice and data traffic will be sent and received via a WAN links， what must be configured to provide a certain amount of dedicated bandwidth and to prioritize the voice traffic over other types of network traffic？（） IPSec VPN。 QoS mechanism。 Firewall。 NAT。 EIGRP routing protocol。 Static routing。
信用评级的局限性表现在（） 信用评级资料的局限性。 信用评级对管理者的评价薄弱。 信用评级的自身风险。 信用评级不代表投资者的偏好。
发现有人在架空线杆塔上触电时，除切断电源，使触电者脱离电源外，还应注意些什么？
In which service component of the optimize phase would you assess the routing and switching systemand recommend activities such as optimizing device configurations, capacity planning, or traffic analysis? （）
