What is required to view the OEL image after launching it from the Marketplace?

To view the OEL (Oracle Enterprise Linux) image after launching it from the Marketplace, a VNC (Virtual Network Computing) viewer is necessary. VNC provides a graphical desktop sharing system that allows users to remotely control the visual display of the Linux environment. When the OEL image is launched, it typically runs in a headless mode, meaning there is no graphical user interface by default. By using a VNC viewer, users can establish a remote display session that allows them to interact with the OEL image graphically.

This requirement is specific because other methods, such as using a web browser or SSH, do not provide the necessary graphical interface for viewing applications that may require a desktop environment. Adjusting firewall rules may be needed for network connectivity but does not address the core requirement of viewing the graphical interface itself. An SSH key is essential for secure shell access but not for accessing a visual desktop. Thus, a VNC viewer is the appropriate tool for displaying the graphical output of the OEL image.