Free Cisco Certified Design Expert (CCDE v3.0) Exam 400-007 Exam Practice Test

A network architect in an enterprise is designing a network policy for certain database applications. The goal of the policy is to allow these applications to access the internet directly, whereas other user and network applications that communicate with systems or users outside their own network must be routed through the data center. The focus is on achieving higher availability and a better user experience for the database applications, but switching between different network paths based on performance characteristics must be supported.Which solution meets these requirements?

• MPLS L3VPN with QoS
• Cloud onRamp for laaS
• Cloud onRamp for SaaS
• MPLS direct connect

Company XYZ has a new network based on IPv6. Some of the subnets that they are planning to use will be confidential and need an addressing scheme that confines them to the local campus network. Which type of IPv6 addresses can be used for these networks in the IPv6 addressing design?

• local addresses
• private addresses
• link-local addresses
• unique local addresses

You have been asked to design a high-density wireless network for a university campus. Which two principles would you apply in order to maximize the wireless network capacity? (Choose two.)

• Implement a four-channel design on 2.4 GHz to increase the number of available channels
• Choose a high minimum data rate to reduce the duty cycle.
• increases the number of SSlDs to load-balance the client traffic.
• Make use of the 5-GHz band to reduce the spectrum utilization on 2.4 GHz when dual-band clients are used.
• Enable 802.11n channel bonding on both 2.4 GHz and 5 GHz to increase the maximum aggregated cell throughput.

Network changes because of mergers, acquisitions, and divestment can be very disruptive to the network if not carried out carefully. When an organization sells parts of its business, it must detach the affected parts of the network from the rest of the network. Which network design approach is appropriate to minimize the impact and risks as the divested parts of the network are detached?

• redundant design
• modular design
• less complex design
• routed access design

Which methodology is the leading lifecycle approach to network design and implementation?

• PPDIOO
• Waterfall model
• Spiral model
• V model

Router R1 is a BGP speaker with one peering neighbor over link 'A'. When the R1 link/interface 'A' fails, routing announcements are terminated, which results in the tearing down of the state for all BGP routes at each end of the link. What is this a good example of?

• fault isolation
• resiliency
• redundancy
• fate sharing

SDN is still maturing Throughout the evolution of SDN which two things will play a key role in enabling a successful deployment and avoiding performance visibility gaps in the infrastructure? (Choose two.)

• rapid on-demand growth
• dynamic real-time change
• falling back to old behaviors
• peer-to-peer controller infrastructure
• integration of device context

What are two top cloud-native security challenges faced by today's cloud-oriented organizations? (Choose two.)

• establishing user roles
• polymorphism
• lack of visibility and tracking
• increased attack surface
• user credential validation

Company XYZ has designed their network to run GRE over IPsec on their Internet-based VPN to connect two sites. Which IPsec tunneling feature can they enable to optimize the data flow while ensuring that the headers contain no duplicate IP addresses?

• Transport Mode in IPsec Phase I
• Transport Mode in IPsec Phase II
• Tunnel Mode in IPsec Phase II
• Tunnel Mode in IPsec Phase I

What best describes the difference between Automation and Orchestration?

• Automation refers to an automatic process for completing a single task and Orchestration refers to assembling and coordinating a set of tasks and conditions.
• Automation describes a hands-off configuration process while Orchestration refers to sets of automation tasks that require the network administrator to coordinate
• Automation refers to an automatic process for completing multiple tasks with conditions and Orchestration refers to executing tasks in parallel.
• Automation refers to scripting languages (Python. Ansible etc.) and Orchestration refers to commercial products that control configuration deployment