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.

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.

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

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

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

A. 4 bytes for both
B. 4 bytes， and 8 bytes respectively
C. 8 bytes for both
D. 24 bytes for both

A. Blocking cipher andnon-blocking cipher
B. CBC cipher and EBC cipher
C. Block cipher and Stream cipher
D. Blocker cipher and Streamer cipher
E. 3DES cipher and AES cipher

A. SSL Handshake Protocol
B. SSLAlert Protocol
C. SSL Record Protocol
D. SSL Change CipherSpec Protocol

A. the router generates a certificate request and forwards it tothe CA
B. the router generates an RSA key pair
C. the router sends its public key to the CA
D. the CA sends its public key to the router
E. the CA verifies the identity of the router
F. the CA generates a certificate request and forwards it to the router

A. this login authenticationmethod list is automaticallyapplied to all lines except those that have a named method list explicitly defined
B. If the user fails the TACACS+ authentication then the local database on the router will be used to authenticatethe user
C. if the tacacs+ server fails to respond then the local database on the router will be used to authenticate the user 
D. "login" is the name of the method list being configured
E. if the tacacs+ server is unavailable， authentication will succeed automaticallyby default