多項選擇題Which of the following statemets regarding Control Plane Policing （CoPP） is correct？（）

A.Control Plane Policing （CoPP） addresses the need to protect the management planes， ensuring routingstability， availability， and critical packet delivery.
B.Control Plane Policing （CoPP） leverages MQC to define traffic classification criteria and to specifyconfigurable policy actions for the classified traffic.
C.Control Plane Policing （CoPP） uses a dedicated "control-plane" command via the Modular QoS CLI （MQC）to provide filtering and rate limiting capabilities.
D.Control Plane Policing （CoPP） uses "service policy" command under relevant interfaces to filter DOS packet to protect routing packets.
E.Control Plane Policing （CoPP） protects the transit management and data traffic through the router.


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2.多項選擇題What are the benefits of using TCAM technology in high-end routing products ？（）

A.Lower power consumption
B.Lower maintenance cost
C.Simplified configuration
D.Deterministic performance
E.Longer uptime

3.單項選擇題With the DSCP value fo "101110"， what does the "11" in bits 1 and 2 indicate ？（）

A.AF Class
B.Drop Probability
C.CS（Class Selector Value ）
D.PHB （Per-Hop Behavior ）
E.IP Precedence
F.Queue Depth

4.多項選擇題SONET’s three layers are（）.

A.Section
B.Line
C.Frame
D.Path
E.DS1

5.單項選擇題Which of the following descriptions about IP spoofing is correct？（）

A.IP source address is forged
B.IP destination address is forged
C.IP TCP source port is forged
D.IP TCP destination port is forged
E.None of above