The Zero Touch Provisioning (ZTP) process in Nokia SR Linux obtains the location of the provisioning script from a DHCP server, typically via DHCP option 67 (Bootfile Name). A TLS profile is used to provide the necessary certificates and ciphers for securely downloading the script if the source URL uses HTTPS. However, the TLS profile itself does not define or contain the URL of the script; its purpose is to secure the transport layer for the download, not to specify the file's location.

B. The ZTP process is indeed managed by a dedicated ztp application within the SR Linux operating system, which initiates when the device boots without a configuration file.

C. The initial step of ZTP requires the device to obtain an IP address, default gateway, and other crucial options (like the script location) from a DHCP server.

D. This statement describes the fundamental purpose of ZTP: to enable a factory-default router to automatically download its configuration and become operational without manual intervention.

1. Nokia SR Linux Basic System Configuration Guide, Release 23.10, Section: "Zero touch provisioning".

This section states, "The DHCP server can provide the location of the provisioning script in DHCP option 67 (Bootfile Name)." This confirms that the DHCP server, not a TLS profile, provides the script location.

It also clarifies the role of the TLS profile: "If the provisioning script is downloaded from an HTTPS server, you can configure a TLS profile to be used for the download." This supports that the TLS profile is for security, not for defining the script's source.

The guide describes the ZTP process starting with a DHCP Discover message, confirming the reliance on a DHCP server (Option C) and the goal of automated provisioning (Option D). The existence of the ZTP process itself confirms a managing application (Option B).