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Free 400-007 Exam Braindumps (page: 21)

Page 20 of 74
PDF with 382 Questions



Refer to the exhibit. Traffic was equally balanced between Layer 3 links on core switches SW1 and SW2 before an introduction of the new video server in the network. This video server uses multicast to send video streams to hosts and now one of the links between core switches is over utilized. Which design solution solves this issue?

  1. Aggregate links using Layer 2 link aggregation.
  2. Add more links between core switches.
  3. Apply a more granular load-balancing method on SW2.
  4. Filter IGMP joins on an over-utilized link.
  5. Apply a more granular load-balancing method on SW1.

Answer(s): A





Refer to the exhibit. This enterprise customer wants to stream one-way video from their head office to eight branch offices using multicast. Their current service provider provides a Layer 3 VPN solution and manages the CE routers, but they do not currently support multicast. Which solution quickly allows this multicast traffic to go through while allowing for future scalability?

  1. Enable a GRE tunnel between nodes C1 and C4.
  2. Enable a GRE tunnel between nodes C2 and C4.
  3. Enable a GRE tunnel between nodes CE1 and CE2.
  4. Implement hub and spoke MPLS VPN over DMVPN (also known as 2547oDMVPN) between CE1 and CE2.
  5. The service provider must provide a Draft Rosen solution to enable a GRE tunnel between nodes PE1 and PE2.

Answer(s): D



Which architecture does not require an explicit multicast signaling protocol, such as PIM or P2MP, to signal the multicast state hop-by-hop, but instead uses a link state protocol to advertise the multicast forwarding state?

  1. Bi-Directional Implicit Replication
  2. Bit Indexed Explicit Replication
  3. Binary Intermediate Enhanced Routing
  4. Binary Indexed Explicit Routing

Answer(s): B


Reference:

https://community.cisco.com/t5/service-providers-knowledge-base/cisco-bit-indexed-explicit-replication-v2/ta-p/3623306#:~:text=Cisco%C2%AE%20Bit%20Indexed%20Explicit,signaling%20protocol%20in%20the%20network.



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

  1. inherent topology flexibility with a service protection provided through a direct integration with an upper layer protocol
  2. inherent topology flexibility with built-in service protection
  3. ability to expand bandwidth over existing optical infrastructure
  4. inherent topology flexibility with intelligent chromatic dispersion
  5. inherent topology flexibility and service protection provided without penalty through intelligent oversubscription of bandwidth reservation

Answer(s): B,C

Explanation:

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.


Reference:

https://www.cisco.com/c/dam/global/de_at/assets/docs/dwdm.pdf






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