Which three statements accurately describe layer 2 Ethernet switches?（） Microsegmentation decreases the number of collisions on the network.。 if a switch receives a frame for an unkown destination,it uses ARP to resolve the address.。 Spanning Tree Protocol allows switches to automatically share vlan information.。 In a properly functioning network with redundant switched paths,each switched aegment will contain one root bridge with all its ports in the forwarding state.All other switches in that broadcast domain will have only one root port.。 Establishing vlans increases the number of broadcast domains.。 Switches that are configured with vlans make forwarding decisions based on both layer 2 and layer 3 address information.。
从价税＝商品（）×从价税率。 重量。 质量。 数量。 总值。
Which two of these statements best describe the benefits of WPAv1？ （） SSID broadcast prevention。 Improved mutual authentication。 Improved encryption through AES。 Improved protection against sniffing initialization vectors。 RF jamming preventio。
Which two IOS commands are equivalents for putting a Cisco 7500 OC-12 RPR interface card intowrapped mode？ （） shutdown [a b]。 srp shutdown [a b]。 srp ips request manual-switched [a b]。
道尔顿制
下列不属于国际收支的资本项目是（） 。
