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| Section | Weight | Objectives |
|---|---|---|
| Advanced Addressing and Routing Solutions | 25% | - Determine IPv6 migration strategy - Create structured addressing designs - Create stable, secure, and scalable routing designs for Layer 3 |
| WAN for Enterprise Networks | 20% | - Design SD-WAN solution - Design WAN connectivity - Design QoS for WAN |
| Advanced Enterprise Campus Networks | 25% | - Design Layer 2 and Layer 3 campus networks - Design for high availability - Design campus network services (QoS, multicast, etc.) |
| Enterprise Campus Security | 20% | - Design network access control - Design network security |
| Services | 10% | - Design network management - Design end-to-end QoS policy |
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NEW QUESTION # 115 
Refer to the exhibit. The full EIGRP routing table is advertised throughout the network. Currently, users experience data loss when any one link in the network fails. An architect optimizes the network to reduce the impact when a link fails. Which solution should the architect include in the design?
Answer: A
Explanation:
Running BFD between EIGRP neighbors is the appropriate design when the problem is traffic loss during link failure and the requirement is to reduce the impact of the failure. EIGRP can detect neighbor loss through its hello and hold timers, but those timers may not be fast enough for applications sensitive to packet loss.
Bidirectional Forwarding Detection provides rapid failure detection independent of the routing protocol's normal timer expiration. When BFD detects a failed forwarding path, it notifies EIGRP so the routing process can converge without waiting for the EIGRP hold timer. Summarization is still a valuable scaling technique, but it primarily reduces route table size and query scope; it does not directly accelerate failure detection on an individual inter-router link. Reducing EIGRP hello and hold timers can improve detection, but it increases control-plane load and is less efficient than BFD. The question emphasizes data loss when any one link fails, so fast failure detection is the best corrective design. Reference topics: EIGRP convergence, BFD, failure detection, hello and hold timers, routed-link resiliency.
NEW QUESTION # 116
Refer to the exhibit. A large company is planning to deploy OSPF in this environment.
- All routers will be in Area 0.
- R1 will support an isolated environment that does not require routing outside of the networks that it runs locally, but it must be able to access the internet.
- R5 will serve as the access point to the internet.
While planning for the new deployment, the engineering team noticed that router R1 has been having memory issues. Which action with an updated OSPF design reduces the resource load on R1?
Answer: D
Explanation:
Configuring R1 as a stub router reduces its OSPF memory and CPU requirements by preventing it from receiving unnecessary external route advertisements. R1 will receive a default route from its neighbor (to R5 for internet access) while not maintaining a full OSPF database, directly addressing its resource limitations.
NEW QUESTION # 117
Refer to the exhibit.
An engineer is designing a routing solution for a customer. The design must ensure that a failure of network
10.1.0.0/24, 10.1.2.0/24, 10.2.1.0/24, or 10.2.3.0/24 does not impact the core. It also requires fast convergence time during any link failover in the core or access networks. Which solution must the engineer select?
Answer: B
NEW QUESTION # 118 
Refer to the exhibit. All routers currently reside in OSPF area 0. The network manager recently used R1 and R2 as aggregation routers for remote branch locations and R3 and R4 for aggregation routers for remote office locations. The network has since been suffering from outages, which are causing frequent SPF runs. To enhance stability and introduce areas to the OSPF network with the minimal number of ABRs possible, which two solutions should the network manager recommend? (Choose two.)
Answer: A,B
Explanation:
Section: Advanced Addressing and Routing Solutions
Explanation/Reference:
NEW QUESTION # 119
Which QoS feature responds to network congestion by dropping lower priority packets?
Answer: C
Explanation:
Weighted Random Early Detection is the QoS congestion-avoidance feature that responds to early congestion by selectively dropping packets before a queue becomes completely full. WRED can use packet markings, such as IP precedence or DSCP, to determine drop probability, so lower-priority traffic can be dropped earlier than higher-priority traffic. This helps TCP-based applications slow down before tail drop causes large synchronized retransmissions. CBWFQ is a queuing and bandwidth-allocation mechanism; it classifies traffic into queues and assigns bandwidth, but it is not specifically the feature that randomly drops lower-priority packets during congestion. Tail drop drops packets only when the queue is full and does not intelligently prefer lower-priority traffic. Strict priority queuing protects delay-sensitive traffic by servicing a priority queue first, but it does not provide weighted random early discard behavior. In Cisco QoS design, WRED is used as a congestion-avoidance mechanism, especially for TCP traffic classes where early packet drops can reduce global synchronization and protect higher-priority classes.
NEW QUESTION # 120
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