Episode 31: AWS SAA-C03 VPC & Networking - Quick Revision + 13 Exam Questions | TechTalkWithBalu
Notas do episódio
🎁 Free SAA-C03 cheat sheet for this series - link at the bottom.
New format! A 3-minute VPC revision to jog your memory, then 13 networking exam questions with full answers - and why every wrong option is wrong.
🆕 THE FORMAT
🧠 Quick revision first (skip it if you know it cold)
📝 Then 13 networking scenario questions
⏱️ A pause after each to lock in YOUR answer
✅ The answer + WHY it's right
❌ WHY each wrong option is wrong
Because on the real exam, eliminating the plausible-but-wrong options is the whole game.
🧠 QUICK REVISION COVERS
• Public vs private subnets (it's all in the route table)
• Internet Gateway vs NAT Gateway
• Route tables
• Security Groups (stateful) vs NACLs (stateless)
• VPC endpoints (gateway vs interface)
• VPC peering vs Transit Gateway
📋 THE 13 QUESTIONS TEST
• NAT gateway (IPv4 private-subnet outbound)
• Network ACL (subnet-level deny rules)
• Multi-AZ NAT gateway high availability
• VPC peering (two VPCs, simplest)
• Application Load Balancer path-based routing
• Direct Connect (dedicated private link)
• Security group (stateful return traffic)
• Direct Connect resilience (DX + VPN backup)
• Egress-only internet gateway (IPv6 outbound)
• PrivateLink (private access to a third-party service)
• Route 53 failover routing (active-passive)
• VPC Flow Logs (capture network traffic)
• Global Accelerator (non-cacheable, static anycast IPs)
⚡ THE CORE SKILL
So many networking questions come down to ONE distinction:
• IPv4 vs IPv6
• Stateful (SG) vs stateless (NACL)
• One VPC (peering) vs many (Transit Gateway)
• Cacheable (CloudFront) vs non-cacheable (Global Accelerator)
• Public internet (VPN) vs AWS backbone (Direct Connect)
Spot which distinction the question is testing, and the answer falls out.
💡 KEY DISTINCTIONS DRILLED
• NAT gateway (IPv4) vs egress-only IGW (IPv6)
• Security group (stateful) vs NACL (stateless, can deny)
• VPC peering (2 VPCs) vs Transit Gateway (many)
• Direct Connect (private, consistent) vs VPN (over internet)
• Route 53 failover vs latency vs weighted vs geolocation
• CloudFront (caching) vs Global Accelerator (backbone, static IPs)
🎓 SCORING
Got 9+ right (~70%)? Your networking is in good shape. Missed some? Networking is heavily tested - now you know exactly where to focus.
🎧 First in the new topic-challenge format! Databases, security, storage & more coming.
📚 Subscribe to keep testing yourself right up to exam day.
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📚 FREE STUDY HELP FOR SAA-C03
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✅ Free cheat sheet pack - one page per exam domain, incl. NAT gateway vs egress-only IGW and security groups vs NACLs. No catch.
👉 https://payhip.com/b/Zv5hd
🎯 Want more practice like today's questions?
104 scenario questions that explain why the right answer is right AND why every wrong option is wrong. Works on your phone or laptop.
👉 https://payhip.com/b/CLvcu
🏷️ Listeners get 20% off with code PASS
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