A.提供對(duì)物理層的控制
B.差錯(cuò)控制
C.流量控制
D.決定傳輸報(bào)文的最佳路由

A.Set the encapsulation of the interface to HDLC
B.Place the CSU/DSU in local-loop mode
C.Enable local-loop mode on the DCE Frame Relay router
D.Verify that the encapsulation is set to Frame Relay

A.PING
B.TRACERT
C.TELNET
D.IPCONFIG

A.ping
B.Telnet
C.FTP
D.TCP
E.IP

A.10BASE粗同軸電纜
B.10BASE-T
C.10BASE2細(xì)同軸電纜

A.物理層
B.網(wǎng)絡(luò)層
C.傳輸層
D.接入層
E.分發(fā)層
F.數(shù)據(jù)鏈路層

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