Question

5. Your instance is associated with two security groups. The first allows Remote Desktop Protocol (RDP) access over port 3389 from Classless Inter-Domain Routing (CIDR) block . The second allows HTTP access over port 80 from CIDR block . What traffic can reach your instance?

A. RDP and HTTP access from CIDR block
B. No traffic is allowed.
C. RDP and HTTP traffic from
D. RDP traffic over port 3389 from and HTTP traffic over port 80 from 0.0.00/0

Answer 1

The instance can accept RDP traffic over port 3389 from CIDR block A and HTTP traffic over port 80 from CIDR block B, each specified by their respective security groups.

Step-by-step explanation:

The question relates to network traffic access to an instance (likely a virtual server) that is associated with two security groups. The first security group allows Remote Desktop Protocol (RDP) access over port 3389 from a specified Classless Inter-Domain Routing (CIDR) block. The second security group permits HTTP access over port 80, also from a specified CIDR block. Since the CIDR blocks are not specified in the question, let us assume them to be CIDR block A for RDP and CIDR block B for HTTP to provide a more specific answer.

Based on this information, the instance can receive RDP traffic over port 3389 from CIDR block A and HTTP traffic over port 80 from CIDR block B. If either security group specifies the CIDR block as 0.0.0.0/0, it would allow the respective type of traffic from any IP address.

Therefore, the traffic that can reach the instance is:

• RDP traffic over port 3389 from CIDR block A
• HTTP traffic over port 80 from CIDR block B