Which two key and block sizes are valid for AES? (Choose two.)

• A.64-bit block size, 112-bit key length
• B.64-bit block size, 168-bit key length
• C.128-bit block size, 192-bit key length
• D.128-bit block size, 256-bit key length
• E.192-bit block size, 256-bit key length

Correct Answer: C,D

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Email security has become a high priority task for a security engineer at a large multi-national organization due to ongoing phishing campaigns. To help control this, the engineer has deployed an Incoming Content Filter with a URL reputation of (-10 00 to -6 00) on the Cisco ESA Which action will the system perform to disable any links in messages that match the filter?

• A.Defang
• B.Quarantine
• C.FilterAction
• D.ScreenAction

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Which Dos attack uses fragmented packets to crash a target machine?

• A.smurf
• B.MITM
• C.teardrop
• D.LAND

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Refer to the exhibit.

A network engineer is testing NTP authentication and realizes that any device synchronizes time with this router and that NTP authentication is not enforced What is the cause of this issue?

• A.The router was not rebooted after the NTP configuration updated.
• B.The hashing algorithm that was used was MD5. which is unsupported.
• C.NTP authentication is not enabled.
• D.The key was configured in plain text.

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What are the two most commonly used authentication factors in multifactor authentication? (Choose two.)

• A.encryption factor
• B.time factor
• C.biometric factor
• D.confidentiality factor
• E.knowledge factor

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