TMP Network Design & Optimization 2 — Questions and Answers
Question 1: A telecom manager needs to reduce end-to-end latency for a real-time voice application. Which optimization technique is MOST effective?
- Increase link bandwidth
- Implement QoS traffic prioritization (Correct answer)
- Add redundant routing paths
- Upgrade to IPv6 addressing
Correct answer: Implement QoS traffic prioritization
QoS prioritization queues voice packets ahead of less time-sensitive traffic, directly reducing latency for real-time applications.
Question 2: In a hierarchical network design, which layer is responsible for high-speed backbone switching between distribution blocks?
- Access layer
- Distribution layer
- Core layer (Correct answer)
- Aggregation layer
Correct answer: Core layer
The core layer provides high-speed, high-availability switching between distribution blocks without applying complex policies.
Question 3: A network experiences congestion on a primary WAN link. Which routing protocol feature automatically redistributes traffic to alternate paths?
- Route summarization
- Equal-cost multipath (ECMP) (Correct answer)
- Route redistribution
- Administrative distance adjustment
Correct answer: Equal-cost multipath (ECMP)
ECMP load-balances traffic across multiple equal-cost paths, automatically utilizing alternate WAN links when one becomes congested.
Question 4: What is the primary purpose of network baseline documentation in optimization efforts?
- To comply with regulatory requirements
- To establish normal performance thresholds for anomaly detection (Correct answer)
- To reduce capital expenditure on new equipment
- To simplify IP address management
Correct answer: To establish normal performance thresholds for anomaly detection
A network baseline captures normal performance metrics so deviations can be identified and addressed before they impact service quality.
Question 5: A TMP candidate is designing a network for a campus with 5,000 users. Which topology best balances redundancy and cost at the distribution layer?
- Full mesh between all distribution switches
- Dual-homed star connecting to two core switches (Correct answer)
- Single star with one uplink to core
- Ring topology with STP blocking
Correct answer: Dual-homed star connecting to two core switches
A dual-homed star provides redundancy against core switch failure while avoiding the excessive cost and complexity of full mesh.
Question 6: Which metric is used by OSPF to calculate the best path to a destination?
- Hop count
- Bandwidth-based cost (Correct answer)
- Delay and reliability composite
- Administrative distance
Correct answer: Bandwidth-based cost
OSPF uses cost, which is calculated as a function of interface bandwidth (100 Mbps / link bandwidth), to determine the shortest path.
Question 7: When implementing SD-WAN to optimize branch connectivity, what key advantage does it offer over traditional MPLS-only designs?
- Lower routing table complexity
- Ability to dynamically select transport paths based on real-time application performance (Correct answer)
- Elimination of all WAN hardware
- Automatic IPsec key rotation
Correct answer: Ability to dynamically select transport paths based on real-time application performance
SD-WAN continuously monitors link quality and can shift application flows between MPLS, broadband, and LTE in real time to maintain SLA compliance.
TMP Network Design & Optimization 2
A telecom manager needs to reduce end-to-end latency for a real-time voice application.
Which optimization technique is MOST effective?