Realistic 400-007 Exam Answers - Instant Cisco Certified Design Expert (CCDE) Written Exam Discount Free PDF Quiz

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Cisco 400-007 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Security Design	15%	- Regulatory compliance and governance - Threat mitigation and visibility design - Security integration in network architecture - Segmentation, access control and policy enforcement
Topic 2: Service Design	15%	- Support for voice, video, IoT, storage and applications - Service placement and data governance - Operational resilience and compliance - Cloud connectivity and multi-service integration
Topic 3: Network Design	30%	- Modular, resilient, scalable network architectures - Implementation, migration and transformation planning - Design under technical, operational and application constraints - Traditional and software-defined network design
Topic 4: Business Strategy Design	15%	- Business continuity and sustainability design - Project management methodologies impact - Business requirements analysis and alignment - Cost analysis and risk management
Topic 5: Control, Data, Management Plane and Operational Design	25%	- Software-defined and controller-based solutions - Automation, orchestration and model-driven management - Traffic flow and plane separation design - Control plane architectures: centralized, decentralized, hybrid

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Cisco Certified Design Expert (CCDE) Written Exam Sample Questions (Q31-Q36):

NEW QUESTION # 31
Which BGP feature provides fast convergence?

A. BGP-LS
B. BGP FlowSpec
C. BGP-EVPN
D. BGP PIC

Answer: D

NEW QUESTION # 32
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 switched due to a successful RPF check against the routing table
B. It is dropped due to an unsuccessful RPk8t8ck against the multicast receiver.
C. It is dropped due to an unsuccessful RPF check against the multicast source
D. It is switched give that no RPF check is performed

Answer: A

NEW QUESTION # 33
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 switched due to a successful RPF check against the routing table
C. It is switched give that no RPF check is performed
D. It is dropped due to an unsuccessful RPF check against the multicast source

Answer: D

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 # 34
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. Deploy uRPF strict mode.
B. Deploy uRPF loose mode.
C. Poison certain subnets by adding static routes to Null0 on the core switches connected to the pool of servers.
D. Limit sources of traffic that exit the server-facing interface of the firewall cluster with ACLs.

Answer: B

Explanation:
Because asymmetric routing is occurring, strict uRPF (which requires the return path match) would block legitimate traffic. In this scenario, deploying uRPF loose mode is optimal:
* Loose mode checks only for the existence of the source IP in the routing table, not the exact interface.
* It provides protection against spoofed IP packets even if asymmetric routing occurs.
Why other options are incorrect:
* A: Null0 static routes do not prevent spoofed source addresses.
* B: Strict mode would incorrectly drop valid traffic due to asymmetry.
* C: ACLs could help but may not scale or adapt dynamically to traffic patterns.
-

NEW QUESTION # 35
A multicast network is sing Bidirectional PIM. Which two combined actions achieve high availability so that two RPs within the same network can act in a redundant manner? (Choose two)

A. Advertise the two RP addresses in the routing protocol
B. Manipulate the administration distance of the unicast routes to the two RPs
C. Manipulate the multicast routing table by creating static mroutes to the two RPs
D. Control routing to the two RPs through a longest match prefix
E. Use anycast RP based on MSDP peering between the two RPs
F. Use two phantom RP addresses

Answer: D,F

Explanation:
https://community.cisco.com/t5/networking-knowledge-base/rp-redundancy-with-pim-bidir-phantom-rp/ta-p
/3117191

NEW QUESTION # 36
......

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