Cisco CCDE 400-007 Questions & Answers

• Question 251:

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

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

  Correct Answer: AD

• Question 252:

  A customer migrates from a traditional Layer 2 data center network into a new SDN-based. spine-and-leaf VXLAN EVPN data center within the same location. The networks are joined to enable host migration at Layer 2. Which activity should be completed each time a legacy network is migrated?

  A. The migrated VLAN should be pruned from the Layer 2 interconnects.

  B. The migrated network should have a VXLAN VNID configured within the new network.

  C. The migrated network should be advertised to the EVPN network as a Type 2 network.

  D. The migrated network should be added to the EVPN BGP routing.

  Correct Answer: B

  his VNID provides a unique identifier for the network within the VXLAN overlay, which allows the network to be identified and properly routed within the new network. This is a key step in enabling host migration at Layer 2.

• Question 253:

  Which action must be taken before new VoIP systems are implemented on a network to ensure that the network is ready to handle the traffic?

  A. Evaluate bandwidth utilization and connection quality

  B. Enable special requirements such as direct DID lines on pickup

  C. Make recommendations to limit the size of the half-open session table on routers

  D. Check if anomaly detection is enabled for SIP and H.323 on Layer 3 devices

  Correct Answer: A

  Quality of the link is important for VoIP. You also need to ensure there is enough bandwidth.

• Question 254:

  Two routers R1 and R2 are directly connected through an Ethernet link. Both routers are running OSPF over the Ethernet link and OSPF has been registered with BFD. R1 has been set up to transmit BFD at a 50 ms interval, but R2 can receive only at a 100 ms rate due to platform limitations. What does this mean?

  A. After the initial timer exchange. R2 sets its transmission rate to the R1 Desired Min TX interval

  B. After the initial timer exchange. R1 sets its transmission rate to the R2 Required Min RX interval

  C. Timers renegotiate indefinitely, so the timer exchange phase never converges

  D. R2 sets the P-bit on all BFD control packets until R2 sends a packet with the F-bit set

  Correct Answer: B

• Question 255:

  Which network management framework can be used to develop a network architecture that contains business requirements analysis, gap analysis, and network diagrams as artifacts to be used for design and implementation later?

  A. FCAPS

  B. Cobit

  C. TOGAF

  D. ITIL

  Correct Answer: C

  The Open Group Architecture Framework, or TOGAF, is intended to serve as a standard for developing and implementing very large computer systems. TOGAF is used by 80% of Global 50 companies today. TOGAF® is used to help organizations design an IT infrastructure that is adapted to meet their requirements.

• Question 256:

  Which technology is an open-source infrastructure automation tool that automates repetitive tasks for users who work in networks such as cloud provisioning and intraservice orchestration?

  A. Ansible

  B. Contrail

  C. Java

  D. Jinja2

  Correct Answer: A

• Question 257:

  Which two advantages of using DWDM over traditional optical networks are true? (Choose two.)

  A. inherent topology flexibility and service protection provided without penalty through intelligent oversubscription of bandwidth reservation

  B. ability to expand bandwidth over existing optical Infrastructure

  C. inherent topology flexibility with built-in service protection

  D. inherent topology flexibility with intelligent chromatic dispersion

  E. inherent topology flexibility with a service protection provided through a direct integration with an upper layer protocol

  Correct Answer: BC

  Two advantages of using Dense Wavelength Division Multiplexing (DWDM) over traditional optical networks are:

  Increased Capacity: DWDM allows for the multiplexing of multiple optical signals onto a single fiber, increasing the capacity of an optical network. This makes it possible to transmit a large amount of data over long distances without the need for additional physical fibers.

  Improved Reliability: DWDM provides a more resilient and reliable network by allowing for the transmission of multiple optical signals at different wavelengths over a single fiber. In the event of a fiber cut or other failure, the network can reroute traffic over a different wavelength, minimizing downtime and disruptions.

• Question 258:

  Company XYZ must design a strategy to protect their routers from DoS attacks, such as traffic destined to the router's own route processor, using separate control plane categories. Which two capabilities can be used to achieve this requirement? (Choose two.)

  A. Control Plane Protection using queue thresholding on the transit subinterface

  B. Control Plane Protection using port filtering on the transit subinterface

  C. Control Plane Protection using port filtering on the main interface

  D. Control Plane Protection using queue thresholding on the host subinterface

  E. Control Plane Protection using port filtering on the host subinterface

  Correct Answer: DE

  Control-plane host subinterface. This interface receives all control-plane IP traffic that is directly destined for one of the router interfaces. https://www.cisco.com/en/US/docs/ios/qos/configuration/guide/ctrl_plane_prot_external_docbase_0900e4b1805eee4e_4container_external_docbase_0900e4b1814dc683.html#wp1124820

• Question 259:

  In the case of outsourced IT services, the RTO is defined within the SLA. Which two support terms are often included in the SLA by IT and other service providers? (Choose two.)

  A. network size and cost

  B. support availability

  C. network sustainability

  D. network reliability

  E. resolution time

  Correct Answer: BE

• Question 260:

  A green data center is being deployed and a design requirement is to be able to readily scale server virtualization.

  Which IETF standard technology can provide this requirement?

  A. data center bridging

  B. unified fabric

  C. Transparent Interconnection of Lots of Links

  D. fabric path

  Correct Answer: C