Which form of DSL technology is typically used as a replacement for T1 lines？（）

多项选择题Refer to the exhibit. Which three statements describe the steps that are required to configure an IPsec site-to-site VPN using a GRE tunnel？（）

A.The command access-list 110 permit gre must be configured to specify which traffic will be encrypted.
B.The command access-list 110 permit ip must be configured to specify which hosts can use the tunnel.
C.The tunnel destination 172.17.63.18 command must be configured on the Tunnel0 interface.
D.The tunnel mode gre command must be configured on the Tunnel0 interface.
E.The tunnel source Ethernet1 command must be configured on the Tunnel0 interface.
F.The tunnel source Tunnel0 command must be configured on the Tunnel0 interface.

多项选择题WhatarethreeconfigurableparameterswheneditingsignaturesinSecurityDeviceManager（SDM）？（）

A.AlarmSeverity
B.AlarmKeepalive
C.AlarmTraits
D.EventMedia
E.EventAlarm
F.EventAction

多项选择题Whichtwostatementsaretrueaboutbroadbandcable（HFC）systems？（）

A.Cable modems only operate at Layer 1 of the OSI model.
B.Cable modems operate at Layers 1 and 2 of the OSI model.
C.Cable modems operate at Layers 1， 2， and 3 of the OSI model.
D.A function of the cable modem termination system （CMTS） is to convert the modulated signal from the cable modem into a digital signal.
E.A function of the cable modem termination system is to convert the digital data stream from the end user host into a modulated RF signal for transmission onto the cable system.

多项选择题WhichtwomechanismscanbeusedtodetectIPsecGREtunnelfailures？（）

A.Dead Peer Detection （DPD）
B.CDP
C.isakmp keepalives
D.GRE keepalive mechanism
E.The hello mechanism of the routing protocol across the IPsec tunnel

单项选择题Refer to the exhibit. Which statement is true about the partial MPLS configuration that is shown？（）

A.The route-target both 100：2 command sets import and export route-targets for vrf2.
B.The route-target both 100：2 command changes a VPNv4 route to a IPv4 route.
C.The route-target import 100：1 command sets import route-targets routes specified by the route map.
D.The route-target import 100：1 command sets import route-targets for vrf2 that override the other route-target configuration.