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A developer configures an NLB with a target group using HTTP protocol. What is the likely issue?

medium📝 Debug Q6 of 15
AWS - Elastic Load Balancing
A developer configures an NLB with a target group using HTTP protocol. What is the likely issue?
ANLB does not support HTTP protocol for target groups, causing configuration failure
BNLB will convert HTTP to TCP automatically
CNLB will forward HTTP traffic without issues
DNLB supports HTTP only if TLS is enabled
Step-by-Step Solution
Solution:

  1. Step 1: Check protocol support for NLB target groups

    NLB supports TCP and UDP protocols only; HTTP is not supported for target groups.

  2. Step 2: Consequence of incorrect protocol

    Configuring HTTP will cause the setup to fail or behave unexpectedly because NLB cannot process Layer 7 protocols.

  3. Final Answer:

    NLB does not support HTTP protocol for target groups, causing configuration failure -> Option A

  4. Quick Check:

    HTTP protocol unsupported for NLB targets [OK]
Quick Trick: NLB target groups must use TCP or UDP, not HTTP [OK]
Common Mistakes:
MISTAKES
  • Assuming NLB auto-converts HTTP to TCP
  • Thinking NLB supports HTTP forwarding
  • Believing TLS enables HTTP support

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