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 Share some CCIE Security 400-251 exam questions and answers below.
Which three statements are true regarding RFC 5176 (Change of Authorization)? (Choose three.)
A. It defines a mechanism to allow a RADIUS server to initiate a communication inbound to a NAD.
B. It defines a wide variety of authorization actions, including “reauthenticate.”
C. It defines the format for a Change of Authorization packet.
D. It defines a DM.
E. It specifies that TCP port 3799 be used for transport of Change of Authorization packets.
Answer: A, C, D

Which two certificate enrollment methods can be completed without an RA and require no direct connection to a CA by the end entity? (Choose two.)
A. SCEP
B. TFTP
C. manual cut and paste
D. enrollment profile with direct HTTP
E. PKCS#12 import/export
Answer: C, E

Which two statements describe the Cisco TrustSec system correctly? (Choose two.)
A. The Cisco TrustSec system is a partner program, where Cisco certifies third-party security products as extensions to the secure infrastructure.
B. The Cisco TrustSec system is an approach to certifying multimedia and collaboration applications as secure.
C. The Cisco TrustSec system is an Advanced Network Access Control System that leverages enforcement intelligence in the network infrastructure.
D. The Cisco TrustSec system tests and certifies all products and product versions that make up the system as working together in a validated manner.
Answer: C, D

Which three statements about Cisco Flexible NetFlow are true? (Choose three.)
A. The packet information used to create flows is not configurable by the user.
B. It supports IPv4 and IPv6 packet fields.
C. It tracks all fields of an IPv4 header as well as sections of the data payload.
D. It uses two types of flow cache, normal and permanent.
E. It can be a useful tool in monitoring the network for attacks.
Answer: B, C, E

According ISO27001 ISMS, which of the following are mandatory documents? (Choose 4)
A. ISMS Policy
B. Corrective Action Procedure
C. IS Procedures
D. Risk Assessment Reports
E. Complete Inventory of all information assets
Answer: A, B, C, D

Which three statements are true regarding Security Group Tags? (Choose three.)
A. When using the Cisco ISE solution, the Security Group Tag gets defined as a separate authorization result.
B. When using the Cisco ISE solution, the Security Group Tag gets defined as part of a standard authorization profile.
C. Security Group Tags are a supported network authorization result using Cisco ACS 5.x.
D. Security Group Tags are a supported network authorization result for 802.1X, MAC Authentication Bypass, and WebAuth methods of authentication.
E. A Security Group Tag is a variable length string that is returned as an authorization result.
Answer: A, C, D

Which three attributes may be configured as part of the Common Tasks panel of an authorization profile in the Cisco ISE solution? (Choose three.)
A. VLAN
B. voice VLAN
C. dACL name
D. voice domain permission
E. SGT
Answer: A, C, D

Which three statements about the Cisco IPS sensor are true? (Choose three.)
A. You cannot pair a VLAN with itself.
B. For a given sensing interface, an interface used in a VLAN pair can be a member of another inline interface pair.
C. For a given sensing interface, a VLAN can be a member of only one inline VLAN pair, however, a given VLAN can be a member of an inline VLAN pair on more than one sensing interface.
D. The order in which you specify the VLANs in a inline pair is significant.
E. A sensing interface in inline VLAN pair mode can have from 1 to 255 inline VLAN pairs.
Answer: A, C, E