You are the administrator of your company’s network. The dial-up server on your network is configured to support certificate authentication. A user named Tom wants to use smart card authentication on his Windows 2000 Professional portable computer. You that Tom’s computer has a PC Card smart card reader and the appropriate drivers installed. You give Tom a smart card to use. What else should you do to enable smart card authentication on Tom’s computer? （）
A. Configure a dial-up connection to use EA
B. Select the smart card device for authentication.
Configure a dial-up connection to use SPA
D. Select the smart card device for authentication.
E. Configure a dial-up connection to use certificate authentication. Enable the usercredentials for authentication.
F. Configure a dial-up connection to connect to a private network through the Internet. Enable L2TP be create a virtual private network （VPN） tunnel.
Refer to the exhibit. What is the effect on the trust boundary of configuring the command mls qos trust cos on the switch port that is connected to the IP phone？（）
A. Effectively the trust boundary has been moved to the IP phone.
B. RTP will be used to negotiate aCoS value based upon bandwidth utilization on the link.
C. The switch is rewriting packets it receives from the IP phone and determining theCoS value.
D. The switch will no longer tag incoming voice packets and will trust the distribution layer switch to set theCo
E. The host is now establishing theCoS value and has effectively become the trust boundary.
Whichofthefollowingstatementsdescribethecharacteristicoflinkstateroutingprotocols?（）
A. Theexchangeofanadvertisementistriggeredbyachangeinthenetwork.
B. Allroutersexchangeroutingtableswitheachotherinamultipointnetwork.
C. Packetsareroutedbasedupontheshortestpathtothedestination.
D. Pathsarechosendependingonthecostefficiencyfactor.
EveryrouterinanOSPFareaiscapableofrepresentingtheentirenetworktopology.
F. OnlythedesignatedrouterinanOSPFareacanrepresenttheentirenetworktopology.
YouarethenetworkadministratorforThenetworkconsistsofa singleDNSdomainnamed. YoureplaceaUNIXserverwithaWindowsServer2003computernamed TestKing1. TestKing1istheDNSserverandstartauthority(SOA)fortestking.com.AUNIX servernamedTestKing2isthemailserverfortestking.com. YoureceivereportsthatInternetuserscannotsende-mailtothetestking.com domain.Thehostaddressesareshowninthefollowingwindow. YouneedtoensurethatInternetuserscansende-mailtothetestking.comdomain. Whatshouldyoudo?（）
Addan_smtpservicelocator(SRV)DNSrecordforTestKing2.
B. Addamailexchange(MX)DNSrecordforTestKing2.
C. Addanalias(CNAME)recordformail.testking.com.
D. EnabletheSMTPserviceonTestKing1.
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