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Network Design & Optimization Flashcards

7 cards from real TMP practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Network Design & Optimization flashcards as text
  1. Which network capacity planning model uses historical traffic growth trends to forecast future bandwidth requirements?

    Answer: Time-series trend analysis

    Time-series trend analysis extrapolates historical utilization data to project when network links will require capacity upgrades.

  2. A TMP professional needs to design a network with 99.999% availability (five-nines). Which strategy MOST directly achieves this?

    Answer: Eliminating all single points of failure through redundant paths and components

    Five-nines availability requires eliminating single points of failure at every layer — hardware, links, power, and software — so any single failure does not cause an outage.

  3. In MPLS networks, what is the function of a Label Edge Router (LER)?

    Answer: Imposes or removes MPLS labels at the edge of the MPLS domain

    The LER (also called PE router) adds MPLS labels to incoming IP packets at the ingress edge and removes them at the egress edge.

  4. Which approach to network design allows traffic engineering by explicitly specifying the path packets take through the network?

    Answer: Policy-based routing (PBR)

    PBR allows administrators to override normal routing decisions and direct traffic along specific paths based on defined policies.

  5. During a network optimization project, a manager discovers that 60% of WAN traffic is Netflix video. Which solution BEST reduces WAN utilization?

    Answer: Implement split tunneling or local internet breakout for non-business traffic

    Local internet breakout (split tunneling) routes consumer internet traffic directly to the internet at the branch rather than backhauling it over the corporate WAN.

  6. What does Mean Time to Repair (MTTR) measure in telecommunications network management?

    Answer: Average time to restore service after a failure occurs

    MTTR is the average duration from the onset of a failure to full service restoration, a key metric for evaluating operational efficiency.

  7. A network engineer is evaluating two routing designs. Design A uses OSPF areas to reduce LSA flooding. Design B uses flat OSPF with no areas. Which statement is correct?

    Answer: Design A scales better because area boundaries limit LSA propagation and SPF recalculation scope

    OSPF areas contain LSA flooding and limit SPF recalculations to within each area, dramatically improving scalability in large networks.