1Z0-1067 · Question #43
You have deployed a three-tier web application inside an Oracle Cloud Infrastructure (OCI) VCN with a CIDR block of 10.0.0.0/28. You Initially deploy three web servers (VM.Standard2.2), two…
The correct answer is A. You do not have enough private IP addresses left to launch all of the new compute instances. Each subnet in a VCN consists of a contiguous range of IPv4 addresses that do not overlap with other subnets in the VCN. In our case the VPN is use 10.0.0.0/28 and by default The first two IPv4 addresses and the last in the subnet's CIDR are reserved by the Networking service…
Question
You have deployed a three-tier web application inside an Oracle Cloud Infrastructure (OCI) VCN with a CIDR block of 10.0.0.0/28. You Initially deploy three web servers (VM.Standard2.2), two application servers (VM.Standard2.4), and two servers (VM.Standard2.8) running Oracle database. The web, application and database servers are deployed across two availability domains in the us- ashburn-1 region. You also deployed a Public Load Balancer In front of the two web servers. The web traffic gradually Increases In the first few days following the deployment, so you attempt to double the number of instances in each tier of the application to handle the new load. Unfortunately, some of these new Instances fail to launch. Your tenancy comes with the following set of predefined services limits for the availability domain and compartment where the application is deployed. What is a possible reason for this deployment to fail?
Exhibit
Options
- AYou do not have enough private IP addresses left to launch all of the new compute instances.
- BYou do not have sufficient public IP addresses required by the web, application and database servers.
- CYou do not have sufficient quotas for number of VM.Standard2.2, VM.Standard2.4 and
- DYou do not have sufficient quotas for number of VM.Standard2.2, VM.Standard2.4 and
How the community answered
(24 responses)- A83% (20)
- B4% (1)
- C4% (1)
- D8% (2)
Explanation
Each subnet in a VCN consists of a contiguous range of IPv4 addresses that do not overlap with other subnets in the VCN. In our case the VPN is use 10.0.0.0/28 and by default The first two IPv4 addresses and the last in the subnet's CIDR are reserved by the Networking service. so will have 13 free IPs should be used in this VCN We have already 3 web + 2 app +2 DB (7 IPs used for instances). in addition to 2 Private IPs for Load balance. that will give us 4 IPs only available in the Subnet that not allow us to double the VMs
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