Cisco CCNA (200-301) Exam Survival Guide

A Fatskills Exam Survival Guide: what to focus on, what to avoid, and how to get through test day without panicking.

Window: Global | Networking fundamentals + security + automation

Must-do topics

• L2: Ethernet, VLANs, trunking (802.1Q), STP basics
• L3: IPv4/IPv6 addressing, subnetting, routing (static, OSPF), default routes
• Wireless basics: SSIDs, WPA2/WPA3, controller vs autonomous
• Security: ACLs, port security, DHCP snooping, AAA basics
• WAN/Internet: NAT/PAT, VPN fundamentals
• Automation & programmability: APIs, JSON, controller-based networking concepts
• Troubleshooting methodology with ping, traceroute, show commands

Top traps (avoid)

• Trunk vs access port confusion (native VLAN, allowed VLANs)
• Wrong wildcard masks in ACLs; order of ACEs matters
• OSPF areas/costs misconfig; forgetting passive interfaces
• NAT vs PAT behavior; inside/local vs global term mix-ups
• Subnetting under time pressure without a stable method

Time split

• 120 minutes; expect ~100 Q (varies)
• Allocate ~60% fundamentals (L2/L3), 20% security, 20% automation/wireless

Last-48h checklist

• Subnetting drills (increment method + quick chart)
• ACL practice: standard vs extended, wildcard masks
• OSPF single-area config steps; neighbor states
• NAT/PAT translation tables; common show outputs

Quick facts

• VLANs segment broadcast domains; trunks carry multiple VLANs
• STP prevents loops; root bridge chosen by lowest BID (priority+MAC)
• OSPF uses cost = reference bandwidth / interface bandwidth
• Standard ACLs near destination; extended ACLs near source (general rule)
• PAT maps many private to one public IP via ports

Speed tactics

• Translate scenario to a quick diagram; mark subnets and gateways
• Eliminate answers that violate OSI logic (L2 vs L3 responsibilities)
• Remember defaults (native VLAN 1, admin distance common values)
• Trust show output clues; don’t overthink

Day-of mini-plan

• 10-min subnet warm-up; build a tiny reference ladder
• Read stem first, then the exhibit; highlight key numbers
• Flag long sims; answer quick MCQs first, return to sims

Ready to practice? Try the Cisco CCNA (200-301) MCQ practice set on Fatskills.