Explanation
A clientless remote access VPN deployment is used to provide remote users with secure access to internal corporate resources by authenticating the user through an internet browser. A clientless remote access VPN does not require any software installation or configuration on the user's device. Instead, it uses a web-based portal that acts as a proxy between the user and the corporate resources. The user can access web applications and services through the portal using a standard web browser that supports SSL/TLS encryption. The portal can also provide single sign-on (SSO) capabilities for SAML-enabled applications. A clientless remote access VPN is suitable for scenarios where users need to access mainly web-based resources from unmanaged devices or devices that cannot run VPN clients.
The other options are incorrect because:
A client-based remote access VPN deployment is used to provide remote users with secure access to internal corporate resources by installing a VPN client software on the user's device. A client-based remote access VPN requires software installation and configuration on the user's device. It uses IPsec or SSL/TLS protocols to create a secure tunnel between the user's device and the VPN gateway. The user can access any type of resource through the tunnel using any application that supports TCP/IP protocols.
A client-based remote access VPN is suitable for scenarios where users need to access various types of resources from managed devices or devices that can run VPN clients.
A clientless direct access deployment is not a valid term for a VPN deployment. Direct access is a feature of Windows Server that allows remote users to securely access internal corporate resources without using a VPN connection. Direct access uses IPv6 transition technologies and IPsec protocols to create a secure connection between the user's device and the direct access server. The user can access any type of resource through the connection using any application that supports TCP/IP protocols.
Direct access requires software installation and configuration on both the user's device and the direct access server.
A direct access deployment is not a term for a VPN deployment, but a feature of Windows Server that allows remote users to securely access internal corporate resources without using a VPN connection.
Direct access uses IPv6 transition technologies and IPsec protocols to create a secure connection between the user's device and the direct access server. The user can access any type of resource through the connection using any application that supports TCP/IP protocols. Direct access requires software installation and configuration on both the user's device and the direct access server.