The question asks to identify the statement that is NOT a key characteristic of IDRN (Inventory of Health Sector Human Resources Data Network). IDRN is designed as a platform for managing essential resources.

Evaluating IDRN Characteristics

Let's analyze each option to determine which one does not represent a core feature of IDRN:

• Option 1: District collectors are the authorised officials to obtain and updating of data in IDRN. This highlights the role of specific officials in data management, which is a characteristic related to data governance and operational procedures within the system.
• Option 2: Open data sharing and access policy for viewing resource information in IDRN. This describes the accessibility and transparency of the data, a crucial aspect of modern inventory management systems for resource visibility.
• Option 3: The NIC is located at Bengaluru and is the host for the online inventory of IDRN. While the National Informatics Centre (NIC) might host the platform, its specific location (Bengaluru) is an infrastructural detail, not a functional or strategic characteristic of the IDRN system itself. Key characteristics typically describe what the system *does* or its core principles.
• Option 4: It is the web-based platform for inventory management of key supplies, skilled human resources and equipment. This defines the fundamental purpose and nature of IDRN – a web-based tool for managing critical resources.

Conclusion on IDRN Features

Based on the analysis:

• Options 1, 2, and 4 describe essential aspects of how IDRN functions, its purpose, and its operational policies.
• Option 3 provides a specific detail about the hosting infrastructure's location, which is not considered a defining characteristic of the IDRN system itself.

Therefore, the statement that is NOT a key characteristic of IDRN is the specific location of the hosting NIC.