Answer is correct, the doc link provided in the question.

The Cisco vManage software repository lets you store images in three ways: On the local Cisco vManage server, to be downloaded over a control plane connection: In this case, the software images are kept on the local Cisco vManage server, and they are downloaded to the Cisco SD-WAN devices over a control plane connection. The receiving device usually throttles how much data traffic it can receive over a control plane connection, so for large files, the Cisco vManage server might not be able to monitor the software installation on the device even though it is moving forward correctly.

On the local Cisco vManage server, to be downloaded over an out-of-band connection: In this case, the software images are kept on the local Cisco vManage server, and they are downloaded to the Cisco SD-WAN devices over an out-of-band management connection. For this method to work, you provide the IP address of the out-of-band management interface when you copy the images to the software repository. This method is recommended when the software image files are large, because it avoids any throttling that the device might do and so the Cisco vManage server is able to monitor the software installation.

On a remote server: Starting with Cisco vManage Release 20.7.1, you can keep software images on a remote file server that is reachable through an FTP or HTTP URL. As part of the software upgrade process, the Cisco vManage server sends this URL to the Cisco SD-WAN device, which then establishes a connection to the file server to download the software images. In a multitenant Cisco SD-WAN deployment, only the provider can register a remote server with Cisco vManage and add locations of software images on the remote server to the Cisco vManage repository. https://www.cisco.com/c/en/us/td/docs/routers/sdwan/configuration/Monitor-And-Maintain/monitor-maintain-book/maintain.html#concept_lpv_ggg_5rb

Selected Answer: CD yes its correct