Episode 31: AWS SAA-C03 VPC & Networking - Quick Revision + 13 Exam Questions | TechTalkWithBalu

🎁 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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