A. Content and URL filteringB. Intrusion PreventionC. V……

单项选择题CSAprotectsyourhostby：（）

A. Preventing browsers from opening network sockets inlistening state.
B. Preventingbuffer overflows.
C. Preventingusers from entering unencrypted passwords
D. Preventing browsers from acting as client to webservers.

多项选择题ChoosethemostcorrectstatementsaboutSMTP ESMTP.（）

A. Open mail relays are often used for spamming.
B. ESMTP does NOT provide more security features than SMTP
C. SMTPdoes provide authenticated email sending."
D. Worms often spread via SMTP.

单项选择题CiscoCleanAccessensuresthatcomputersconnectingtoyournetworkhavewhichofthefollowing？（）

A. No vulnerable applications or operating systems
B. No viruses or worms
C. Appropriate security applications and patch levels
D. Current IPS signatures
E. Cisco Security Agent

单项选择题Whichoftheseisthebestwaytoprovidesendernon-repudiation？（）

A. pre-sharedkey
B. secure hash
C. SSL
D. RSA signature

单项选择题WhatgroupinCiscoIOSdoes1536-bitDiffie-Hellmanprimemodulusequivalenttoo？（）

A. group 3
B. group 1
C. group 5
D. group 7