Cisco 400-007 Online Practice Questions and Exam Preparation

Cisco 400-007 Online Questions & Answers

• Question 131:

  Various teams in different organizations within an enterprise are preparing low-level design documents to capture network parameters using a Waterfall project model:

  1. hardware sizing and power consumption

  2. Layer 2 and layer 3 services parameters

  3. configuration of all control plane protocols

  Input from relevant stakeholders was captured at the start of the project, and the project scope has been defined based on the parameters above.

  What impact will it have on documentation and project deliverables if the stakeholders ask to have changes carried out in the network before the information has been captured?

  A. This provides more opportunity to think outside the box.
  B. Rework is expected before the delivery.
  C. Significant effort and time are required.
  D. This provides a flexible approach to incorporate changes.
  B. Rework is expected before the delivery.

• Question 132:

  A company uses equipment from multiple vendors in a data center fabric to deliver SDN, enable maximum flexibility, and provide the best return on investment. Which YANG data model should be adopted for comprehensive features to simplify and streamline automation for the SDN fabric?

  A. proprietary
  B. OpenConfig
  C. native
  D. IETF
  B. OpenConfig

• Question 133:

  Refer to the exhibit.

  

  An engineer has been asked to redesign the traffic flow toward AS 111 coming from AS 500.Traffic destined to AS 111 network 91 7 0.0/16 should come in via AS 100. while traffic destined to all other networks in AS 111 should continue to use the existing path.

  Which BGP attributes are best suited to control this inbound traffic coming from BGP AS 500 Into the 91.7.0.0/16 network?

  A. Prepend AS path for the 91.7.0.0/16 network and set it for neighbor in AS 200.
  B. Use extended community for the 91.7.0.0/16 network, not advertising it to the bi-lateral peer.
  C. Use local preference on R1 for the networks that AS 500 advertises to AS 111.
  D. Set higher MED for neighbor in AS 100 to influence incoming traffic for the 91. 7.0.0/16 network.
  A. Prepend AS path for the 91.7.0.0/16 network and set it for neighbor in AS 200.

• Question 134:

  The administrator of a small branch office wants to implement the Layer 2 network without running STP The office has some redundant paths. Which mechanism can the administrator use to allow redundancy without creating Layer 2 loops?

  A. Use double-sided VPC on both switches
  B. Use two port channels as Flex links
  C. Use fabric path with ECMP
  D. Use 802.3ad link bundling.
  B. Use two port channels as Flex links

• Question 135:

  Refer to the exhibit

  

  Company XYZ is a large enterprise network where the WAN traffic utilizes most of the link. The IT team in the company often reports Stuck-In-Active problems.

  The company is set to acquire another company that will also be running EIGRP and which will connect to the Company XYZ R3 and R4 routers.

  This acquisition could make the issue worse.

  Which design solution solves this problem?

  A. Utilize the EIGRP unequal cost load-balancing feature on R5 and R6 to provide an intenm solution
  B. Implement EIGRP Route Flap Dampening
  C. Deploy the EIGRP stub capability on R5 and R6 with the connected and summary options enabled.
  D. Advertise only the default route to R5 and R6. filtering all other routes.
  C. Deploy the EIGRP stub capability on R5 and R6 with the connected and summary options enabled.

• Question 136:

  Refer to the exhibit.

  

  An architect must design an enterprise WAN that connects the headquarters with 22 branch offices.

  The number of remote sites is expected to triple in the next three years.

  The final solution must comply with these requirements:

  1. Only the loopback address of each of the enterprise CE X and Y routers must be advertised to the interconnecting service provider cloud network.

  2. The transport layer must carry the VPNv4 label and VPN payload over the MP- BGP control plane.

  3. The transport layer must not be under service provider control. Which enterprise WAN transport virtualization technique meets the requirements?

  A. EIGRP Over the Top
  B. MPLS over BGP over multipoint GRE
  C. DMVPN per VRF
  D. point-to-point GRE per VRF
  B. MPLS over BGP over multipoint GRE

• Question 137:

  Which three characteristics of the Single Tier and the Dual Tier Headend Architectures for DMVPN designs are true? (Choose three.)

  A. A Dual Tier Headend Architecture is required when using dual cloud topologies with spoke-to-spoke connectivity
  B. In a Single Tier Headend Architecture there is a single headend router per DMVPN cloud topology
  C. A Single Tier Headend Architecture is required when using dual cloud topologies with spoke-to-spoke connectivity
  D. In a Dual Tier Headend Architecture, there are two different headend routers per DMVPN cloud for high availability purposes
  E. In a Single Tier Headend Architecture, the GRE tunnel endpoint and encryption endpoint functionalities are on the same router
  F. In a Dual Tier Headend Architecture, the GRE tunnel endpoint and encryption endpoint functionalities are on different routers
  B. In a Single Tier Headend Architecture there is a single headend router per DMVPN cloud topology
  E. In a Single Tier Headend Architecture, the GRE tunnel endpoint and encryption endpoint functionalities are on the same router
  F. In a Dual Tier Headend Architecture, the GRE tunnel endpoint and encryption endpoint functionalities are on different routers

• Question 138:

  An enterprise campus is adopting a network virtualization design solution with these requirements

  1.It must include the ability to virtualize the data plane and control plane by using VLANs and VRFs

  2.It must maintain end-to-end logical path transport separation across the network resources available grouped at the access edge Which two primary models can this network virtualization design be categorized? (Choose two)

  A. Path isolation
  B. Session isolation
  C. Group virtualization
  D. Services virtualization
  E. Edge isolation
  A. Path isolation
  D. Services virtualization

• Question 139:

  Which two possible drawbacks should you consider when introducing Network Functions Virtualization in a network design? (Choose two)

  A. Bandwidth utilization increases
  B. Traffic flows are suboptimal
  C. High-end routers are required to support NFV
  D. OpenFlow must be supported in the network
  E. An SDN orchestration layer is required to support NFV
  C. High-end routers are required to support NFV
  E. An SDN orchestration layer is required to support NFV

• Question 140:

  SDWAN networks capitalize the usage of broadband Internet links over traditional MPLS links to offer more cost benefits to enterprise customers. However, due to the insecure nature of the public Internet, it is mandatory to use encryption of traffic between any two SDWAN edge devices installed behind NAT gateways.

  Which overlay method can provide optimal transport over unreliable underlay networks that are behind NAT gateways?

  A. TLS
  B. DTLS
  C. IPsec
  D. GRE
  C. IPsec