單項(xiàng)選擇題The network administrator is asked to configure 113 point-to-point links.Which IP addressing scheme best defines the address range and subnet mask that meet the requirement and waste the fewest subnet and host addresses?（）

A.10.10.0.0/18 subnetted with mask 255.255.255.252
B.10.10.0.0/25 subnetted with mask 255.255.255.252
C.10.10.0.0/24 subnetted with mask 255.255.255.252
D.10.10.0.0/23 subnetted with mask 255.255.255.252
E.10.10.0.0/16 subnetted with mask 255.255.255.252


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1.單項(xiàng)選擇題X.25使用映射的作用是（）。

A.映射本地IP到對(duì)端端口值，以便路由器發(fā)送數(shù)據(jù)時(shí)確認(rèn)發(fā)送端口
B.映射本地IP到本地端口值，以便路由器發(fā)送數(shù)據(jù)時(shí)確認(rèn)發(fā)送端口
C.映射對(duì)端IP到本地端口值，以便X.25交換網(wǎng)絡(luò)查找數(shù)據(jù)發(fā)送路徑
D.映射對(duì)端IP到對(duì)端端口值，以便X.25交換網(wǎng)絡(luò)查找數(shù)據(jù)發(fā)送路徑