Forsecurityreasons,thenetworkadministratorneedstopreven

单项选择题

For security reasons, the network administrator needs to prevent pings into the corporate networks from hosts outside the internetwork. Which protocol should be blocked with access control lists？（）

A.IP
B.ICMP
C.TCP
D.UDP

相关考题

多项选择题 WhichofthefollowingareassociatedwiththeapplicationlayeroftheOSImodel？（two.）（）

单项选择题 WhichtypeofattackischaracterizedbyafloodofpacketsthatarerequestingaTCPconnectiontoaserver？（）

单项选择题 Thecommandframe-relaymapip10.121.16.8102broadcastwasenteredontherouter.Whichofthefollowingstatementsistrueconcerningthiscommand？（）

CCNA(640-802)