An engineer is configuring web filtering for a network using Cisco Umbrella Secure Internet Gateway.
The requirement is that all traffic needs to be filtered. Using the SSL decryption feature, which type of certificate should be presented to the end-user to accomplish this goal?

• A.SubCA
• B.third-party
• C.organization owned root
• D.self-signed

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A malicious user gained network access by spoofing printer connections that were authorized using MAB on four different switch ports at the same time. What two catalyst switch security features will prevent further violations? (Choose two)

• A.DHCP Snooping
• B.Port security
• C.Private VLANs
• D.Dynamic ARP inspection
• E.IP Device track
• F.802.1AE MacSec

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Refer to the exhibit.

When configuring a remote access VPN solution terminating on the Cisco ASA, an administrator would like to utilize an external token authentication mechanism in conjunction with AAA authentication using machine certificates. Which configuration item must be modified to allow this?

• A.Group Policy
• B.Method
• C.SAML Server
• D.DHCP Servers

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An administrator is configuring a DHCP server to better secure their environment. They need to be able to ratelimit the traffic and ensure that legitimate requests are not dropped. How would this be accomplished?

• A.Set a trusted interface for the DHCP server
• B.Set the DHCP snooping bit to 1
• C.Add entries in the DHCP snooping database
• D.Enable ARP inspection for the required VLAN

Correct Answer: A

Explanation
To understand DHCP snooping we need to learn about DHCP spoofing attack first.

DHCP spoofing is a type of attack in that the attacker listens for DHCP Requests from clients and answers them with fake DHCP Response before the authorized DHCP Response comes to the clients. The fake DHCP Response often gives its IP address as the client default gateway -> all the traffic sent from the client will go through the attacker computer, the attacker becomes a "man-in-the-middle".
The attacker can have some ways to make sure its fake DHCP Response arrives first. In fact, if the attacker is "closer" than the DHCP Server then he doesn't need to do anything. Or he can DoS the DHCP Server so that it can't send the DHCP Response.
DHCP snooping can prevent DHCP spoofing attacks. DHCP snooping is a Cisco Catalyst feature that determines which switch ports can respond to DHCP requests. Ports are identified as trusted and untrusted.

Only ports that connect to an authorized DHCP server are trusted, and allowed to send all types of DHCP messages. All other ports on the switch are untrusted and can send only DHCP requests. If a DHCP response is seen on an untrusted port, the port is shut down.

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Drag and drop the NetFlow export formats from the left onto the descriptions on the right.

Correct Answer:

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