單項選擇題哪種類型的攻擊的特點是發(fā)大量的TCP請求連接數(shù)據(jù)包到服務器？（）

A.拒絕服務
B.強制疊加
C.監(jiān)聽
D.木馬


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1.單項選擇題A network administrator receives an error message while tring to configure the Ethernet interface of a router with IP address 10.24.24.24/29. which statement explains the reason for this issue？（）

A.The address is abroadcast address.
B.The Ehernet interface is faulty.
C.VLSM-capable routing protocols must be enable first on the router.
D.This address is a network address.

2.多項選擇題Why do large OSPF networks use a hierarchical design？（）

A.to confine network instability to single areas of the network
B.to reduce the complexity of router configuration
C.to speed up convergence
D.to lower costs by replacing router swith distribution layer switches
E.to decrease latency by increasing bandwidth
F.to reduce routing overhead

3.多項選擇題

根據(jù)下圖，WLANdiagram決定了哪兩個事實？（）

A.兩個cells的overlap的區(qū)域描述了一個basic service set
B.網(wǎng)絡描述了一個extended service set
C.再每個CELL中的AP必須被配置成使用channel 1
D.為了確保連通性，重疊區(qū)域必須小于10%
E.兩個訪問點應該被配置成工作在不同的頻道

4.單項選擇題Which statement is true，as relates to classful or classless routing？（）

A.RIPV1 and OSPF are classless routing protocols.
B.Classful routing protocols send the subnet mask in routing updates.
C.Automatic summarization at classful boundaries can cause problems on disc……
D.EIGRP and OSPF are classful routing protocols and summarize routes by def……