Which SKU represents a model offering 4-hour premium support with hardware replacement?

The SKU that represents a model offering 4-hour premium support with hardware replacement is correctly identified as PAN-SVC-4HR-XXXX. This SKU's structure directly indicates the type of service provided, where "4HR" explicitly denotes a commitment to respond to support requests within four hours. This level of service is key for organizations that require minimal downtime and quick resolution of any hardware issues.

The "XXXX" placeholder signifies that there may be additional identifiers or variations within this category, but the essential component here is the "4HR" part. It clearly informs you that this support package is designed for scenarios where hardware support must be exceptionally swift, making it particularly suitable for critical environments.

The other options, while they may represent other service levels or types of support, do not specifically highlight the 4-hour response time in their nomenclature. This highlights the significance of understanding SKU naming conventions in relation to service offerings within Palo Alto Networks' product lineup.