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Exam AWS-SysOps topic 1 question 360 discussion

Exam question from Amazon's AWS-SysOps
Question #: 360
Topic #: 1
[All AWS-SysOps Questions]

What is a security group in Amazon AWS?

  • A. A UNIX Group that gives permission to edit security settings
  • B. An authorized group of instances that control access to other resources
  • C. A virtual firewall that controls the traffic for one or more instances
  • D. An Access Control List (ACL) for AWS resources
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Suggested Answer: C 🗳️
A security group acts as a virtual firewall that controls the traffic for one or more instances. When you launch an instance, you associate one or more security groups with the instance. You add rules to each security group that allow traffic to or from its associated instances. You can modify the rules for a security group at any time; the new rules are automatically applied to all instances that are associated with the security group. When we decide whether to allow traffic to reach an instance, we evaluate all the rules from all the security groups that are associated with the instance.
Reference:
http://docs.aws.amazon.com/AWSEC2/latest/UserGuide/using-network-security.html

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albert_kuo
10 months, 1 week ago
Selected Answer: C
In Amazon AWS, a security group is a virtual firewall that controls inbound and outbound traffic for one or more instances. It acts as a fundamental security measure for protecting instances within a virtual private cloud (VPC) and enables fine-grained control over network access.
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Finger41
1 year, 10 months ago
Selected Answer: C
C - https://docs.aws.amazon.com/vpc/latest/userguide/VPC_SecurityGroups.html
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xxxdolorxxx
2 years, 6 months ago
C is correct. Although this seems like a CCP question.
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awscertified
2 years, 6 months ago
C. A virtual firewall that controls the traffic for one or more instances
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