A.2B+D
B.30B+D
C.同軸電纜
D.普通電纜

A.dialer time ridle
B.dialer time rcompete
C.dialer time renable
D.dialer time rwait-carrier

A.Visually verify the MAC addresses and then telnet to the switches to enter the switchport-port security mac-address command
B.Have end users e-mail their MAC addresses. Telnet to the switch to enter the switchport-port security mac-address command
C.Use the switchport port-security MAC address sticky command on all the switch ports that have end devices connected to them
D.Use show mac-address-table to determine the addresses that are associated with each port and then enter the commands on each switch for MAC address port-security

A.denial of service
B.brute force
C.reconnaissance
D.Trojan horse

A.64000 bps
B.115200 bps
C.2048000 bps
D.4096000 bps

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

A.A CSU/DSU converts analog signals from a router to a leased line; a modem converts analog signals from a router to a leased line
B.A CSU/DSU converts analog signals from a router to a phone line; a modem converts digital signals from a router to a leased line
C.A CSU/DSU converts digital signals from a router to a phone line; a modem converts analog signals from a router to a phone line
D.A CSU/DSU converts digital signals from a router to a leased line; a modem converts digital signals from a router to a phone line

A.增加網(wǎng)絡(luò)帶寬
B.提高網(wǎng)絡(luò)可用性
C.降低網(wǎng)絡(luò)傳輸費(fèi)用
D.防止數(shù)據(jù)傳輸意外中止

A.支持路由協(xié)議
B.至少具備一個(gè)備份口
C.到少支持兩個(gè)網(wǎng)絡(luò)接口
D.協(xié)議至少要實(shí)現(xiàn)到網(wǎng)絡(luò)層
E.具有存儲(chǔ)、轉(zhuǎn)發(fā)和尋徑功能
F.至少支持兩種以上的子網(wǎng)協(xié)議