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NEW QUESTION: 1
A company has created an account for individual Development teams, resulting in a total of 200 accounts. All accounts have a single virtual private cloud (VPC) in a single region with multiple microservices running in Docker containers that need to communicate with microservices in other accounts. The Security team requirements state that these microservices must not traverse the public internet, and only certain internal services should be allowed to call other individual services. If there is any denied network traffic for a service, the Security team must be notified of any denied requests, including the source IP.
How can connectivity be established between services while meeting the security requirements?
A. Ensure that no CIDR ranges are overlapping, and attach a virtual private gateway (VGW) to each VPC.
Provision an IPsec tunnel between each VGW and enable route propagation on the route table.
Configure security groups on each service to allow the CIDR ranges of the VPCs on the other accounts. Enable VPC Flow Logs, and use an Amazon CloudWatch Logs subscription filter for rejected traffic. Create an IAM role and allow the Security team to call the AssumeRole action for each account.
B. Deploy a transit VPC by using third-party marketplace VPN appliances running on Amazon EC2, dynamically routed VPN connections between the VPN appliance, and the virtual private gateways (VGWs) attached to each VPC within the region. Adjust network ACLs to allow traffic from the local VPC only. Apply security groups to the microservices to allow traffic from the VPN appliances only.
Install the awslogs agent on each VPN appliance, and configure logs to forward to Amazon CloudWatch Logs in the security account for the Security team to access.
C. Create a Network Load Balancer (NLB) for each microservice. Attach the NLB to a PrivateLink endpoint service and whitelist the accounts that will be consuming this service. Create an interface endpoint in the consumer VPC and associate a security group that allows only the security group IDs of the services authorized to call the producer service. On the producer services, create security groups for each microservice and allow only the CIDR range the allowed services. Create VPC Flow Logs on each VPC to capture rejected traffic that will be delivered to an Amazon CloudWatch Logs group.
Create a CloudWatch Logs subscription that streams the log data to a security account.
D. Create a VPC peering connection between the VPCs. Use security groups on the instances to allow traffic from the security group IDs that are permitted to call the microservice. Apply network ACLs to and allow traffic from the local VPC and peered VPCs only. Within the task definition in Amazon ECS for each of the microservices, specify a log configuration by using the awslogs driver. Within Amazon CloudWatch Logs, create a metric filter and alarm off of the number of HTTP 403 responses. Create an alarm when the number of messages exceeds a threshold set by the Security team.
Answer: C
Explanation:
Explanation
AWS PrivateLink provides private connectivity between VPCs, AWS services, and on-premises applications, securely on the Amazon network. AWS PrivateLink makes it easy to connect services across different accounts and VPCs to significantly simplify the network architecture. It seems like the next VPC peering.
https://aws.amazon.com/privatelink/
NEW QUESTION: 2
During the IPv6 auto configuration, what does the device append to the 64-bit prefix that it receives from the router to create its IPv6 address?
A. the DHCP-supplied device ID
B. its MAC address
C. its locally configured IPv4 address
D. a pseudorandom generated number
Answer: B
Explanation:
The automatic configuration is a great feature of IPv6. Imagine you have to manually configure an IPv6 address with 128-bit long, what a pain! With this feature, it is no longer necessary to configure each host manually. But notice that host only autonomously configures its own Link- local address (the IP address used on a LAN). The Link-local address can be created automatically using a link-local prefix of FE80:/10 and a 64-bit interface identifier (based on 48- bit MAC address).
For example, if your MAC address is 00:12:34:56:78:9a, your 64-bit interface identifier is
0012:34FF:FE56:789a (16-bit FFFE is inserted in the middle). And notice that the notation has been changed because IPv6 addresses require 16-bit pieces to be separated by ":".
Then, according to the RFC 3513 we need to invert the Universal/Local bit ("U/L" bit) in the 7th position of the first octet (start counting from 0). The "u" bit is set to 1 to indicate Universal, and it is set to zero (0) to indicate local scope. In this case we set this bit to 1 because the MAC address is universally unique. Thus the result is: 0212:34FF:FE56:789a.
Finally, add the link-local prefix FE80 to create the full IPv6 address: FE80:0:0:0:0212:34FF:FE56:789a (or FE80:212:34FF:FE56:789a in short form) Note: The reason for inverting the
"U/L" bit is to allow ignoring it for short values in the manual configuration case. For example, you can manually assign the short address fc80:1 instead of the long fc80:0:0:0:0200:1
NEW QUESTION: 3
Siehe Ausstellung.
In welchem Modus ist der SW1-Portkanal basierend auf dem LACP-Nachbarstatus konfiguriert?
A. passiv
B. auto
C. aktiv
D. Modus ein
Answer: A
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