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| Section | Weight | Objectives |
|---|---|---|
| Advanced Enterprise Campus Networks | 25% | - Layer 2 campus design
|
| Advanced Addressing and Routing Solutions | 25% | - Routing protocol design
|
| Network Services | 15% | - Quality of Service (QoS)
|
| Security Services | 10% | - Secure connectivity - Security architecture design
|
| WAN for Enterprise Networks | 20% | - WAN connectivity options
|
| Software-Defined Access (SDA) | 5% | - Control plane and data plane design - Fabric design and deployment - SD-Access architecture |
The above formats of ExamsTorrent are made to help customers prepare as per their unique styles and crack the Designing Cisco Enterprise Networks (300-420) exam certification on the very first attempt. Our Designing Cisco Enterprise Networks (300-420) questions product is getting updated regularly as per the original Designing Cisco Enterprise Networks (300-420) practice test’s content. So that customers can prepare according to the latest Designing Cisco Enterprise Networks (300-420) exam content and pass it with ease.
NEW QUESTION # 169
An engineer must design an addressing plan for a small business using a single /24 network. Each department must have its own subnet. Dragand drop the subnets from the left onto the departments requirements that they fulfill on the right. Not all options are used.
Answer:
Explanation:
NEW QUESTION # 170 
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: B
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 # 171
A customer plans to deploy WoL in the enterprise with these high-level design requirements:
DHCP services must be available.
Clients BIOS settings must be set for WoL.
Clients get IP addresses once online.
Spanning-tree PortFast is enabled on the Layer 2 switches.
Which two solutions must the customer select to have a successful deployment? (Choose two.)
Answer: A,C
Explanation:
Wake-on-LAN across routed boundaries requires directed broadcast handling toward the client subnet and helper behavior to forward the magic packet correctly. A sleeping host normally does not maintain a normal IP session, so the WoL magic packet is commonly sent as a directed broadcast to the destination subnet. Cisco designs therefore enable IP directed broadcast on the routed interface or SVI for the client subnet where the sleeping endpoints reside, while controlling the feature carefully to avoid abuse. The ip forward-protocol behavior is also relevant because routers must forward the required UDP broadcast traffic rather than dropping it at the Layer 3 boundary. In addition, an IP helper address toward the WoL server or relay path may be needed on client-facing interfaces so the magic packet can be delivered from the management or server subnet to the client subnet. PortFast helps endpoints become reachable quickly at Layer 2, but it does not replace routed broadcast forwarding. Reference topics: Wake-on-LAN, directed broadcast, ip helper- address, UDP forwarding, PortFast, campus services.
NEW QUESTION # 172
A customer reports that each time a networking component fails, OSPF recalculates the backup path, with causes a short outage. Which solution must the customer implement to improve this situation?
Answer: A
Explanation:
OSPF Loop-Free Alternate (LFA) Fast Reroute (FRR) allows OSPF to quickly switch (within 50 ms) to a backup path when a primary path fails. Without LFA FRR, OSPF has to re-run SPF to find a new path when the primary path fails. With LFA FRR, OSPF pre-computes a backup path and installs the backup next hop in the forwarding table.
https://networklessons.com/cisco/ccie-routing-switching-written/ospf-loop-free-alternate-lfa-fast- reroute-frr
NEW QUESTION # 173
What is the function of the multicast Reverse Path Forwarding check?
Answer: B
NEW QUESTION # 174
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