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Cisco Certified Design Expert (CCDE v3.0) Written Exam Sample Questions (Q257-Q262):

NEW QUESTION # 257
Which purpose of a dynamically created tunnel interface on the design of IPv6 multicast services Is true?

A. multicast client registration to the RP
B. multicast source registration to the RP
C. transport of all IPv6 multicast traffic
D. first-hop router registration to the RP

Answer: D

NEW QUESTION # 258
Refer to the exhibit.

As part of a redesign project, you must predict multicast behavior What happens to the multicast traffic received on the shared tree (*,G), if it is received on the LHR interface indicated*?

A. It is dropped due to an unsuccessful RPk8t8ck against the multicast receiver.
B. It is dropped due to an unsuccessful RPF check against the multicast source
C. It is switched give that no RPF check is performed
D. It is switched due to a successful RPF check against the routing table

Answer: B

Explanation:
https://www.cisco.com/c/en/us/support/docs/ip/ip-multicast/16450-mcastguide0.html When a multicast packet arrives on an interface, the RPF process checks to ensure that this incoming interface is the outgoing interface used by unicast routing in order to reach the source of the multicast packet. This RPF check process prevents loops. Multicast routing does not forward a packet unless the source of the packet passes a RPF check. Once a packet passes this RPF check, multicast routing forwards the packet based only upon the destination address.

NEW QUESTION # 259
An enterprise solution team is performing an analysis of multilayer architecture and multicontroller SDN solutions for multisite deployments. The analysis focuses on the ability to run tasks on any controller via a standardized interface. Which requirement addresses this ability on a multicontroller platform?

A. Use the East-West API to facilitate replication between controllers within a cluster.
B. Deploy a root controller to gather a complete network-level view.
C. Use OpenFlow to implement and adapt new protocols.
D. Build direct physical connectivity between different controllers.

Answer: C

NEW QUESTION # 260
Company XYZ is designing the network for IPv6 security and they have these design requirements:
A switch or router must deny access to traffic from sources with addresses that are correct, but are topologically incorrect Devices must block Neighbor Discovery Protocol resolution for destination addresses that are not found in the binding table.
Which two IPv4 security features are recommended for this company? (Choose two)

A. IPv6 Destination Guard
B. IPv6 DHCP Guard
C. IPv6 Prefix Guard
D. IPv6 Source Guard
E. IPv6 RA Guard

Answer: A,C

Explanation:
https://www.cisco.com/c/dam/global/ja_jp/td/docs/ios-xml/ios/ipv6_fhsec/configuration/xe-16/ip6f-xe-16-book.pdf

NEW QUESTION # 261
You were tasked to enhance the security of a network with these characteristics:
* A pool of servers is accessed by numerous data centers and remote sites
* The servers are accessed via a cluster of firewalls
* The firewalls are configured properly and are not dropping traffic
* The firewalls occasionally cause asymmetric routing of traffic within the server data center.
Which technology should you recommend to enhance security by limiting traffic that could originate from a hacker compromising a workstation and redirecting flows at the servers?

A. Limit sources of traffic that exit the server-facing interface of the firewall cluster with ACLs.
B. Deploy uRPF strict mode.
C. Poison certain subnets by adding static routes to Null0 on the core switches connected to the pool of servers.
D. Deploy uRPF loose mode

Answer: A

NEW QUESTION # 262
......

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