Mastering EC2 Troubleshooting
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Questions and Answers

Which component is automatically assigned to a subnet level in AWS?

  • Security group
  • NACL (correct)
  • Route 53
  • IGW

What is the purpose of CloudTrail?

  • Capture IP traffic in VPC
  • Monitor account activity in AWS (correct)
  • Log DNS queries
  • Check connectivity troubleshooting

Which AWS default component is automatically attached to a default VPC?

  • IGW (correct)
  • Security group
  • NACL
  • Route 53

What is the purpose of VPC flow logs?

<p>Capture IP traffic in VPC (D)</p> Signup and view all the answers

Which component is stateless and has separate incoming and outgoing rules?

<p>NACL (B)</p> Signup and view all the answers

What is the purpose of Route 53 logs?

<p>Log DNS queries (D)</p> Signup and view all the answers

Which component needs to be manually applied to an instance in AWS?

<p>Security group (A)</p> Signup and view all the answers

Which component can be used to block a specific IP address to an EC2 instance?

<p>NACL (B)</p> Signup and view all the answers

Which component has rules applied in a specific order based on their assigned number?

<p>NACL (C)</p> Signup and view all the answers

Which component has both allow and deny rules?

<p>NACL (D)</p> Signup and view all the answers

Which of the following could be causing the access issue for the FortiGate VM?

<p>The SG has the incorrect inbound rule (D)</p> Signup and view all the answers

What should you check first when troubleshooting EC2 connectivity issues?

<p>The EC2 IP-address (A)</p> Signup and view all the answers

What is the purpose of an inbound rule in an SG?

<p>To allow traffic from a specific IP-address (A)</p> Signup and view all the answers

What could be the reason for no incoming traffic to the FortiGate VM?

<p>The sniffer capture shows no incoming traffic (A)</p> Signup and view all the answers

What should you check if there is no HTTPS or SSH connectivity to the FortiGate VM?

<p>The FortiGate sniffer capture (C)</p> Signup and view all the answers

What is the purpose of a network access control list (NACL)?

<p>To allow traffic from all IP-addresses (A)</p> Signup and view all the answers

What is the purpose of a VPC route table?

<p>To allow traffic from all IP-addresses (B)</p> Signup and view all the answers

What should you check last when troubleshooting EC2 connectivity issues?

<p>The local firewall and routing table (B)</p> Signup and view all the answers

What is the purpose of an SG inbound rule for SSH or HTTPS?

<p>To allow traffic from a specific IP-address (C)</p> Signup and view all the answers

What is the purpose of an internet gateway (IGW) in a VPC?

<p>To allow traffic from all IP-addresses (A)</p> Signup and view all the answers

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