Which of the following are Linux desktop managers? (Choose two.)

KDE (K Desktop Environment) is a well-known and feature-rich desktop environment for Linux, providing a graphical user interface and a suite of applications.

GNOME (GNU Network Object Model Environment) is another prominent desktop environment for Linux, offering a user-friendly graphical interface and a set of applications.

GUI (Graphical User Interface) is a general term for a type of interface, not a specific desktop manager.

VNC (Virtual Network Computing) is a system for remote desktop sharing, not a desktop manager itself.

X11 (X Window System) is the underlying display server protocol that desktop environments like GNOME and KDE run on, but it is not a desktop manager.

SPICE (Simple Protocol for Independent Computing Environments) is a remote display protocol primarily used with virtual machines, not a desktop manager.