You are the Cisco Network Designer in Cisco.com. Which signal and noise values will result in thebest phone communication with an access point？（）

单项选择题WhichenterprisecachingmodeeliminatestheneedforLayer4switchesorWCCPenabledrouterstointerceptuserrequests？（）

A. transparent
B. proxy
C. reverse proxy
D. direct

单项选择题YouaretheCiscoNetworkDesigner.Whichisnotmajorscaling，sizing，andperformance considerationforanIPsecdesign？（）

A. connection speed
B. number of remote sites
C. features to be supported
D. types of devices at the remote site

多项选择题WhichthreeobjectiveswouldbemetbydesigningLayer3switchingintheCampusBackboneofamediumsizeinstallation？（）

A. scale to a large size
B. increase router peering
C. provide a flexible topology with no spanning tree loops
D. control broadcasts in the backbone

单项选择题TosecurelytransportEIGRPtraffic，anetworkadministratorwillbuildVPNsbetweensites.WhatisthebestmethodtoaccomplishthetransportofEIGRPtraffic？（）

A. IPSec in tunnel mode
B. IPSec in transport mode
C. GRE with IPSec in transport mode
D. GRE with IPSec in tunnel mode

单项选择题It’saconfigurationthatexpertsarecallinga firewallsandwich， withthesecondfirewallprovidingasecondlevelofloadbalancingaftertrafficdown.Whatismeantbytheterm firewallsandwich ？（）

A. single layer of firewalling
B. multiple layers of firewalling
C. firewall connections in either an active or standby state
D. an architecture in which all traffic between firewalls goes through application-specific servers