A User Wants to Create a Public Subnet in VPC

question 658

Multiple Choice

A user wants to create a public subnet in VPC and launch an EC2 instance within it. The user has not selected the option to assign a public IP address while launching the instance. Which of the below mentioned statements is true with respect to this scenario?

• A) The instance will always have a public DNS attached to the instance by default
• B) The user would need to create a default route to IGW in subnet's route table and then attach an elastic IP to the instance to connect from the internet
• C) The user can directly attach an elastic IP to the instance
• D) The instance will never launch if the public IP is not assigned

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Definitions:

Positive Reinforcement

A method in behavior modification that involves rewarding a desired behavior, thereby increasing the likelihood that the behavior will happen again.

Negative Reinforcement

A behavioral principle where the removal of an unpleasant stimulus following a behavior increases the likelihood of that behavior being repeated.

Positive Reinforcement

An increase in the future frequency of a behavior due to the addition of a stimulus immediately following a response.

Negative Reinforcement

A behavioral principle where the removal of an unpleasant stimulus strengthens a behavior, increasing its occurrence.