多項選擇題What are four methods used by hackers？ （）

A.footprint analysis attack
B.privilege escalation attack
C.buffer Unicode attack
D.social engineering attack
E.front door attacks
F.Trojan horse attack


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1.單項選擇題Which result is of securing the Cisco IOS image by use of the Cisco IOS image resilience feature？（）

A.The Cisco IOS image file will not be visible in the output from the show flash command.
B.The show version command will not show the Cisco IOS image file location.
C.When the router boots up， the Cisco IOS image will be loaded from a secured FTP location.
D.The running Cisco IOS image will be encrypted and then automatically backed up to a TFTP server.

2.單項選擇題You are a network technician at Certpaper.com. Which description is correct when you have generated RSA keys on your Cisco router to prepare for secure device management？（）

A.You must then specify the general-purpose key size used for authentication with the crypto key generaters a general-keys modulus command.
B.You must then zeroize the keys to reset secure shell before configuring other parameters.
C.All vty ports are automatically enabled for SSH to provide secure management.
D.The SSH protocol is automatically enabled.

3.單項選擇題What should be enabled before any user views can be created during role-based CLI configuration ？（）

A.aaa new-model command
B.secret password for the root user
C.usernames and passwords
D.multiple privilege levels

4.多項選擇題Which three options are network evaluation techniques？ （）

A.Performing end-user training on the use of antispyware software
B.Performing virus scans
C.Scanning a network for active IP addresses and open ports on those IP addresses
D.Using password-cracking utilities