单项选择题
You are the Cisco Network Designer in Cisco.com. Which layer NAS operating mode are ACL filtering and bandwidth throttling only provided during posture assessment?（）
A. Layer 2 B. Layer 3 C. Layer 4 D. out-of-band
单项选择题 To ensure voice packets are kept within the Committed Information Rate (CIR) of a Frame Relay link, what should be used in the CPE?（）
问答题 DRAG DROP
单项选择题 Which QoS requirement applies to streaming video traffic?（）
