单项选择题
Which is not a reason that Internet Service Providers prefer to use PPP over Ethernet (PPoE)?（）
A.access control and billing can be done on a per-user, rather than a per-site basis
B.supports Link Fragmentation and Interleaving
C.provides the ability to connect a network of hosts over a simple bridging access device
D.provides a consistent means of authenticating users (RADIUS for example)
相关考题
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多项选择题
WhenisitappropriatetoenableLinkFragmentationandInterleaving(LFI)onDSLconnectionsforTeleworkers?（）
A.uplink speed less than 768kbps
B.supporting Voice-over-IP
C.using PPPoE encapsulation
D.using PPPoA encapsulation
E.uplink speed greater than 768kbps -
单项选择题
Acustomerindicatestheyrunamission-criticalapplicationwhichmarksitspacketsbest-effort(DSCP=0).Howcanyouguaranteedeliveryofthistraffic?（）
A.Remark the traffic on ingress and prioritize on egress.
B.Enable CEF and Netflow.
C.Configure the MS-Windows QoS Scheduler to prioritize this traffic.
D.Enable WRED. -
单项选择题
Refer to the exhibit. With an IPSec tunnel established between remote Router A and head-end router B, with Compressed Real-Time Protocol (cRTP) configured on the serial interface of Router A, what impact will the cRTP configuration have on the Voice over IP packets flowing through the IPSec tunnel from a Cisco 7960 IP phone?（）
A.Twenty bytes of header will be replaced with five bytes.
B.If the IPSec transform set includes Authentication Header, the receiving IPSec peer will discard the packets.
C.The IPSec packets will be dropped by Router A's compression logic.
D.The voice packets will not be compressed.
