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Pass the Cisco CCDE v3.0 400-007 Questions and answers with Dumpstech

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400-007 Questions and Answers

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Viewing questions 41-50 out of questions

Questions # 41:

What are two advantages of the Agile project management methodology? (Choose two)

Options:

brief but detailed feedback loops

extensive documentation

well-detailed and reliable budget estimates

creation of shippable enhancements

tight and rigid model

Answer

A, D

Questions # 42:

: 504

To facilitate true end-to-end QoS on an IP-network, the IETF has defined two models: IntServ and DiffServ Which protocol is used by both models?

Options:

Common Open Policy Service

Resource Quality Service Planning

Service Code Point Policy

Resource Reservation and Distribution

Answer

Questions # 43:

A business wants to refresh its legacy Frame Relay WAN and consolidate product specialists via video in 200 branches. Which technology should be used?

Options:

DMVPN phase 1 network over the Internet

Layer 3 MPLS VPN hub and spoke

Layer 2 VPLS

Layer 3 MPLS VPN full mesh

Answer

Explanation

B (Layer 3 MPLS VPN hub and spoke):A hub-and-spoke MPLS VPN allows scalable branch-to-data-center communication with efficient routing, simplified management, and adequate support for real-time video across 200 branches.

Other options explained:

A: DMVPN is flexible but not as scalable or deterministic for 200-site enterprise video conferencing.

C: VPLS operates at Layer 2 and may introduce unnecessary broadcast domain scaling challenges.

D: Full mesh MPLS is difficult to manage for such a large number of sites.

Questions # 44:

Network orchestration enables network administrators to focus on strategic initiatives, innovation, and value-added tasks rather than spending time on manual and repetitive network management activities. Drag and drop the orchestration types from the left onto the corresponding functions on the right. Not all options are used.

Question # 44

Options:

Answer

Answer:

Questions # 45:

Question # 45

Refer to the exhibit After a network audit a network engineer must optimize the current network convergence time The proposed solution must consider link layer and control plane failures Which solution meets the requirements?

Options:

Configure denounce timers

Increase fast hello timers.

Implement BFD

Enable LSP fast flood

Answer

Questions # 46:

Which DCI technology utilizes a “flood and learn” technique to populate the Layer 2 forwarding table?

Options:

LISP

OTV

VPLS

EVPN

Answer

Explanation

VPLS (Virtual Private LAN Service) is a Layer 2 VPN technology that simulates a LAN across an MPLS or IP core. VPLS uses a flood-and-learn mechanism where unknown unicast, broadcast, and multicast traffic is flooded to build the forwarding database dynamically — much like a traditional LAN switch.

This flood-and-learn behavior leads to MAC learning based on incoming traffic, not control-plane advertisement.

VPLS may require extra control-plane scaling mechanisms in large-scale deployments due to this learning behavior.

Other options explained:

A (LISP): Uses mapping servers and control plane for EID-to-RLOC mapping, not flood-and-learn.

B (OTV): Uses control-plane MAC address learning instead of data-plane flooding.

D (EVPN): Uses BGP control-plane learning for MAC and IP address distribution.

—

Questions # 47:

: 483

Direct cloud connectivity provides secure high-performance and end-to-end connectivity needed to run critical applications that have requirements that cannot be met when using the Internet What is the primary benefit gained from direct cloud connectivity?

Options:

End-to-end visibility and management of the entire enterprise network

Avoids network contention and unpredictable routing changes

End to end connectivity SLA with deterministic latency and performance

Consistent and guaranteed SLA backend performance to the closest peering point

Answer

Questions # 48:

Company XYZ is migrating their existing network to IPv6. Some access layer switches do not support IPv6, while core and distribution switches fully support unicast and multicast routing. The company wants to minimize cost of the migration. Which migration strategy should be used?

Options:

The access layer switches must support IGMP snooping at a minimum. Any switches that do not support IGMP snooping must be replaced.

Upgrade the non-supporting switches. Otherwise, it will cause an issue with the migration.

Layer 2 switches will not affect the implementation of IPv6. They can be included in the design in their current state.

The access layer switches must support DHCPv6. Any switches that do not support DHCPv6 must be replaced.

Answer

Explanation

C (Layer 2 switches unaffected):IPv6 operates at Layer 3, so pure Layer 2 switches forward frames without needing IPv6 awareness. As long as switches can transparently forward Ethernet frames, IPv6 functionality will be preserved, minimizing unnecessary hardware upgrades.

Other options explained:

A/B/D: These unnecessarily increase cost and complexity for basic Layer 2 functionality where IPv6 awareness is not mandatory.

Questions # 49:

A customer has a functional requirement that states HR systems within a data center should be segmented from other systems that reside in the same data center and same VLAN. The systems run legacy applications by using hard-coded IP addresses. Which segmentation method is suitable and scalable for the customer?

Options:

Data center perimeter firewalling

VACLs on data center switches

Transparent firewalling

Routed firewalls

Answer

Explanation

C (Transparent firewalling):Transparent (Layer 2) firewalls operate at the data link layer and allow segmentation and inspection of intra-VLAN traffic without requiring changes to the existing IP addressing. This is ideal for legacy environments where IP addresses are hard-coded, while still providing fine-grained security policies between applications in the same subnet.

Other options explained:

A: Perimeter firewalls cannot segment east-west traffic within a VLAN.

B: VACLs provide basic filtering but are not as scalable or flexible as transparent firewalls for stateful inspection.

D: Routed firewalls require Layer 3 boundaries, which would conflict with hard-coded IP design.

Questions # 50:

What is the primary benefit for an organization that dynamically can expand their private cloud capacity by allocating additional compute and/or storage resources using a third-party service provider or partner?

Options:

traffic engineering

business agility

policy enforcement

traffic encapsulation

Answer

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