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Which of the following is the correct way to allow incoming HTTP traffic on port 80 in a security group ingress rule?

easy📝 Configuration Q12 of 15
AWS - Security Groups and Network ACLs
Which of the following is the correct way to allow incoming HTTP traffic on port 80 in a security group ingress rule?
AProtocol: UDP, Port Range: 80, Source: 0.0.0.0/0
BProtocol: ICMP, Port Range: 80, Source: 0.0.0.0/0
CProtocol: TCP, Port Range: 22, Source: 0.0.0.0/0
DProtocol: TCP, Port Range: 80, Source: 0.0.0.0/0
Step-by-Step Solution
Solution:

  1. Step 1: Identify the correct protocol and port for HTTP

    HTTP uses TCP protocol on port 80.

  2. Step 2: Confirm the source IP range for open access

    0.0.0.0/0 means allow from any IP address.

  3. Final Answer:

    Protocol: TCP, Port Range: 80, Source: 0.0.0.0/0 -> Option D

  4. Quick Check:

    HTTP = TCP port 80 [OK]
Quick Trick: HTTP always uses TCP port 80 for ingress [OK]
Common Mistakes:
  • Using UDP instead of TCP for HTTP
  • Using wrong port like 22 for HTTP
  • Confusing ICMP with TCP/UDP protocols

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