单项选择题
A.The attacking device spoofs a source MAC address of a valid host currently in the CAM table. The switch then forwards frames destined for the valid host to the attacking device.
B.Frames with unique， invalid destination MAC addresses flood the switch and exhaust CAM table space. The result is that new entries cannot be inserted because of the exhausted CAM table space， and traffic is subsequently flooded out all ports.
C.The attacking device crafts ARP replies intended for valid hosts. The MAC address of the attacking device then becomes the destination address found in the Layer 2 frames sent by the valid network device.
D.The attacking device crafts ARP replies intended for valid hosts. The MAC address of the attacking device then becomes the source address found in the Layer 2 frames sent by the valid network device.
E.The attacking device spoofs a destination MAC address of a valid host currently in the CAM table. The switch then forwards frames destined for the valid host to the attacking device.
F.Frames with unique， invalid source MAC addresses flood the switch and exhaust CAM table space. The result is that new entries cannot be inserted because of the exhausted CAM table space， and traffic is subsequently flooded out all ports.
G.None of the other alternatives apply
单项选择题 Study the exhibit shown below carefully. In this scenario the service provider wants to ensure that switch S1 is the root switch for its own network and the network of . On which interfaces should root guard be configured to ensure that this happens？（）
多项选择题 In order to enhance worker productivity， a Cisco wireless network has been implemented at all locations. Which three statements regarding WLAN are true？（）
单项选择题 Switch 1 was configured as shown below： Based on the output shown above， which statement is true？ （）