You have deployed a multi-tier application with multiple compute instances in Oracle Cloud Infrastructure. You want to back up these volumes and have decided to use 'Volume Groups' feature. The Block volume and Compute instances exist in different compartments within your tenancy.
Periodically, a few child compartments are moved under different parent compartments, and you notice that sometimes volume group backup fails.
What could be the cause?

• A. The Identity and Access Management policy allowing backup failed to move when the compartment was moved.
• B. You have the same block volume attached to multiple compute instances; if these compute instances are in different compartments then all concerned compartments must be moved at the same time.
• C. A compute instance with multiple block volumes attached cannot move when a compartment is moved.
• D. You are exceeding your volume group backup quota configured.

An organization has its mission critical application consisting of multiple application servers and databases running inside Virtual Cloud Network (VCN) in uk-london-1 region. Their solution architect wants to further strengthen their architecture by planning for Disaster Recovery (DR) in eu-frankfurt-1 region.
Which two solutions should their architect keep in mind while designing for DR?

• A. The RTO is the acceptable timeframe of lost data that application can tolerate.
• B. It is not possible to use Active Data Guard to synchronize a database in uk-london-1 region to equivalent database in eu-frankfurt-1 region.
• C. A remote VCN peering connection is required to establish secure and reliable connectivity between different VCNs created in uk-london-1 and eu-frankfurt-1 region.
• D. Load balancer will automatically distribute traffic between both the regions.
• E. rsync utility can be used to asynchronously copy file systems or snapshot data to another region.

A retail company has recently adopted a hybrid architecture. They have the following requirements for their end-to-end Connectivity model between their on-premises data center and Oracle Cloud Infrastructure (OC1) region
* Highly available connection with service level redundancy
* Dedicated network bandwidth with low latency
Which connectivity setup is the most cost effective solution for this scenario?

• A. Setup FastConnect virtual circuit as your primary connection, and an IPSec VPN as a backup connection. Use separate edge devices in your on-premises data center for each connection. From your edge devices, advertise more specific routes through FastConnect virtual circuit, and more specific routes through the backup IPSec VPN path.
• B. Setup IPsec VPN as your primary connection, and a FastConnect virtual circuit as a backup connection. Use separate edge devices in your on-premises data canter for each connection from your edge devices, advertise more specific routes IPSec VPN, and specific routes through the backup FastConnect virtual circuit.
• C. Setup IPSec VPN as your primary connection, and a second IPSec VPN as a backup connection. Use separate edge devices in your on p data center for each connection. From your edge devices, advertise more specific routes via primary IPSec VPN. and less specific rod the backup IPSec VPN.
• D. Setup FastConnect virtual circuit as your primary connection, and a second FastConnect virtual circuit as a backup connection. Use separate edge devices in your FastConnect physical connectivity is redundant Use a single edge device in your on premises data center for each connection From yc device, advertise more specific routes via primary FastConnect virtual circuit, and less specific routes through t backup FastConnect circuit.

You are part of a project team working in the development environment created in OCI. You have realized that the CIDR block specified for one of the subnet in a VCN is not correct and want to delete the subnet. While deleting you are getting an error indicating that there are still resources that you must delete first. The error includes the OCID of the VNIC that is in the subnet.
Which of the following action you will take to troubleshoot this issue?

• A. Use OCI CLI to delete the subnet using --force option
• B. Use OCI CLI to delete the VNIC first and then delete the subnet
• C. Copy and Paste OCID of the VNIC in the search box of the OCI Console to find out the parent resource of the VNIC
• D. Use OCI CLI to call "GetVnic" operation to find out the parent resource of the VNIC

You are working on the migration of the web application infrastructure of your company from on-premises to Oracle Cloud Infrastructure. You need to ensure that the DNS cache entries of external clients will not direct them to the on-premises infrastructure after switching to the new infrastructure.
Which of the following options will minimize this problem?

• A. Increase the TTL of the DNS records after the switch.
• B. Reduce the TTL of the DNS records before the switch.
• C. DNS changes propagate fast enough that it is not necessary to take any action.
• D. Increase the TTL of the DNS records before the switch.
• E. Reduce the TTL of the DNS records after the switch.