A.兩次成功登錄之間的延遲
B.如果檢測(cè)到DoS攻擊，應(yīng)關(guān)閉登錄
C.加密所有密碼
D.為登錄建立系統(tǒng)日志

A.172.16.0.0/18
B.172.16.0.0/16
C.172.16.0.0/20
D.172.16.0.0/21

A.Connect a router on a local network.
B.Connect a router to another router.
C.Allow distribution of routes between networks.
D.Translate a private IP address.
E.Connect a network to the Internet.

A.data integrity
B.encryption
C.key exchange
D.authentication

A.Addresses in a private range will be not routed on the Internet backbone.
B.Only the ISP router will have the capability to access the public network.
C.The NAT process will be used to translate this address in a valid IP address.
D.Several automated methods will be necessary on the private network.
E.A conflict of IP addresses happens, because other public routers can use the same range.

A.設(shè)置最短密碼長(zhǎng)度
B.關(guān)閉無(wú)用連接
C.加密配置文件中的所有密碼
D.設(shè)置密碼有效期

A.The Mac address of the NIC in Sever1
B.The IP address of Server 1.
C.The MAC address of the s0/0/0 interface of router R2
D.The IP address of the s0/0/0 interface of router R1
E.The IP address of the Fa0/0 interface of router R1

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

A.10.180.48.224
B.9.255.255.10
C.192.168.20.223
D.172.16.200.18

A.登陸嘗試失敗一定次數(shù)后禁用賬號(hào)
B.設(shè)置密碼有效期
C.不使用明文密碼
D.使用強(qiáng)密碼