單項選擇題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.單項選擇題在OSI模型的哪層運用RSTP用來防止循環(huán)?()

A.數(shù)據(jù)鏈路
B.網(wǎng)絡(luò)
C.物理
D.傳輸

2.多項選擇題Which two commands correctly verify whether port security has been configured on port FastEthernet 0/12 on a switch?()

A.SW1#show swithport port-security interface FastEthernet 0/12
B.SW1# show swithport port-secure interface FastEthernet 0/12
C.SW1# show port-secure interface FastEthernet 0/12
D.SW1#show running-config
E.SW1#show port-security interface FastEthernet 0/12

3.單項選擇題選舉根端口主要確定哪個值?()

A.最低端口MAC地址
B.端口的優(yōu)先級號和MAC地址
C.VTP修訂號
D.最高的端口優(yōu)先級數(shù)量
E.路徑開銷(cost)

4.多項選擇題下面關(guān)于RSTP哪三種說法是正確的?()

A.RSTP鏈路故障后顯著減少拓撲聚合時間
B.RSTP通過增加備用和備份角色的消費STP端口角色
C.RSTP端口atates被阻塞,丟棄,learing,或轉(zhuǎn)發(fā)
D.RSTP還使用STP proprsal-協(xié)議序列
E.RSTP使用相同的定時器baseed過程STP上點至點鏈接
F.在點到點鏈路提供比STP更快的傳輸和轉(zhuǎn)發(fā)