400-007 Studienmaterialien: Cisco Certified Design Expert (CCDE) Written Exam - 400-007 Torrent Prüfung & 400-007 wirkliche Prüfung

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Cisco 400-007 Exam Syllabus Topics:

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

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Cisco Certified Design Expert (CCDE) Written Exam 400-007 Prüfungsfragen mit Lösungen (Q37-Q42):

37. Frage
A service provider hires you to design its new managed CE offering to meet these requirements:
* The CEs cannot run a routing protocol with the PE.
* Provide the ability for equal or unequal ingress load balancing in dual-homed CE scenarios.
* Provide support for IPv6 customer routes.
* Scale up to 250,000 CE devices per customer.
* Provide low operational management to scale customer growth.
* Utilize low-end (inexpensive) routing platforms for CE functionality.
Which tunneling technology do you recommend?

A. point-to-point GRE
B. DMVPN
C. LISP
D. FlexVPN

Antwort: C

Begründung:
* D (LISP - Locator/ID Separation Protocol):
* Supports massive scale with centralized control plane (mapping servers).
* CE routers do not run routing protocols with PE.
* Allows load balancing and multi-homing using locator sets.
* Supports IPv4 and IPv6.
* Lightweight CE requirements fit low-cost platforms.
Why other options are incorrect:
* A: FlexVPN is control-plane intensive and less scalable for large managed CE deployments.
* B: Point-to-point GRE doesn't scale well with 250,000 CEs.
* C: DMVPN requires routing protocol overlays which violate the requirement.

38. Frage
Refer to the exhibit.

OSPF is running as the IGP to provide reachability to all AS100 networks R3 and R4 are the current ABRs at the boundary of OSPF Area0 and Areal Now BGP must be deployed within AS 100 because it will be receiving Internet routes from its eBGP peers (the service provider) connected to R1 and R2 What is an optimal solution for this deployment to configure BGP relationships and redistribute BGP learned routes into OSPF?

A. R1, R2, R3 and R4 must be set up with a neighbor relationship with R5 only must not be a route reflector.
B. A full mesh should be deployed between all the routers with mutual redistribution to take place at R1 and R2.
C. R5 should be configured as a route reflector for R1, R2, R3 and R4. BGP routes must be redistributed at R1 and R2 into OSPF.
D. Configuration should be set up with R1 and R2, and R3 in one sub AS, with and R4 in another, and redistribution at R1 and R2.

Antwort: B

39. Frage
A healthcare customer requested that SNMP traps must be sent over the MPLS Layer 3 VPN service.
Which protocol must be enabled?

A. SSH
B. Syslog
C. SNMPv2
D. Syslog TLS
E. SNMPv3

Antwort: E

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

Antwort: A

Begründung:
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.
-

41. Frage
As part of workspace digitization, a large enterprise has migrated all their users to Desktop as a Sen/ice (DaaS), by hosting the backend system in their on-premises data center. Some of the branches have started to experience disconnections to the DaaS at periodic intervals, however, local users in the data center and head office do not experience this behavior.
Which technology can be used to mitigate this issue?

A. traffic shaping
B. traffic policing
C. WRED
D. tail drop

Antwort: C

42. Frage
......

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