What is known as "one-to-nearest" addressing in IPv6?（） A: global unicast B: anycast C: multicast D: unspecified addre

哪命令可以从PC被用来验证同一局域网交换机连接的主机之间的连接？（） A: ping address B: tracert address C: traceroute address D: arp addre

When an IP packet is Layer 3-switched from a source in one VLAN to a destination in another VLAN,which field in a packet will be rewritten? （） A: Layer 2 TTL B: Layer 3 TTL C: Layer 3 source address D: Layer 3 transport protocol E: Layer 3 destination addre