300-420 — Most Debated Topics

Community-voted ranking of 32 topics, sorted by disagreement level. Higher dispute = more test-takers disagree on the answer.

#1
POV Report Builds the Customer Platform During Discovery
S-Grade Dispute: 50% 3 comments
#2
IP-VPN to SD-WAN Migration: More Security and Centralized Policies
A-Grade Dispute: 50% 3 comments
#3
AES-CBC for Multicast in Cisco SD-WAN (GCM for Unicast)
A-Grade Dispute: 50% 3 comments
#4
Mark Multimedia Conferencing with DSCP AF4 (Avoid WRED)
A-Grade Dispute: 50% 3 comments
#5
Single-Homed Full Mesh Gives HA Without Extra WAN Links
A-Grade Dispute: 44% 4 comments
#6
Advertising a Default Route from Core to Aggregation to Hide Instability
S-Grade Dispute: 37% 5 comments
#7
Shape Outbound and Police Inbound to Protect a 10 Mbps Link
S-Grade Dispute: 25% 5 comments
#8
SE Discovery Activities: Gather Current State and Map Innovation to Needs
S-Grade Dispute: 25% 4 comments
#9
Configure Explicit Trust at the DiffServ Trust Boundary (F and G)
A-Grade Dispute: 25% 3 comments
#10
WoL Across VLANs: Directed Broadcast and WoL-Server Helpers
A-Grade Dispute: 25% 3 comments
#11
DNA Assurance Differentiators: Time Travel, Guided Remediation, Hybrid Analytics
S-Grade Dispute: 20% 3 comments
#12
Dynamic NAT-PT Connects the IPv6 Island to IPv4 Services
A-Grade Dispute: 14% 3 comments
#13
SD-Access and ACI Fabric Similarities: VNIDs, Group Policy, and SGTs
S-Grade Dispute: 0% 3 comments
#14
DNA Center Assurance Proactive Insights Pinpoints Serious Issues
S-Grade Dispute: 0% 3 comments
#15
MSDP Connects PIM-SM Domains to Deliver VoD Across ASes
A-Grade Dispute: 0% 3 comments
#16
SD-Access Border Node Encapsulates/De-encapsulates VXLAN
A-Grade Dispute: 0% 5 comments
#17
Dedicated Control-Plane Nodes for Frequent Endpoint Roaming
A-Grade Dispute: 0% 3 comments
#18
Sizing the IPv4 Plan: /23 Server Room, No Overlap
A-Grade Dispute: 0% 4 comments
#19
Full Mesh WAN: Informed Decisions and Always-On Backup Paths
A-Grade Dispute: 0% 3 comments
#20
Multicast VoD Design Across Multiple ASes for High Availability
A-Grade Dispute: 0% 13 comments
#21
On-Change vs Periodic Telemetry for Device State?
A-Grade Dispute: 0% 18 comments
#22
Which Router Needs IP Directed Broadcast for Wake-on-LAN?
A-Grade Dispute: 0% 13 comments
#23
Enabling SD-Access for Remote Sites with SD-WAN
A-Grade Dispute: 0% 6 comments
#24
Which Two Options Help You Sell Cisco ISE?
A-Grade Dispute: 0% 5 comments
#25
Which AES Mode for Cisco SD-WAN Multicast Traffic?
A-Grade Dispute: 0% 9 comments
#26
Campus QoS Design: Scavenger Queue and Queuing Placement?
A-Grade Dispute: 0% 4 comments
#27
Which QoS Class Model Fits CS5 Broadcast?
A-Grade Dispute: 0% 2 comments
#28
Which QoS Model Fits 5G Backbone Marking Requirements
A-Grade Dispute: 0% 2 comments
#29
Which EIGRP Stub Mode Advertises All Needed Prefixs to Neighbors?
A-Grade Dispute: 0% 2 comments
#30
BGP Route Reflector Design Reducing iBGP Peerings
A-Grade Dispute: 0% 2 comments
#31
Is BFD Required for Sub-Second Fiber-Break Convergence?
A-Grade Dispute: 0% 3 comments
#32
Which Address Families Isolate Two Companies on a Shared Core?
A-Grade Dispute: 0% 2 comments

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