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

KDE (K Desktop Environment) is a complete Linux desktop environment that provides a graphical shell, window manager (KWin), and a full suite of bundled applications built on the Qt framework.

GNOME is a widely used Linux desktop environment that provides a complete graphical interface with its own window manager (Mutter) and application ecosystem built on the GTK framework.

GUI stands for Graphical User Interface, which is a generic concept describing any graphical interface paradigm and is not itself a Linux desktop manager.

VNC (Virtual Network Computing) is a remote desktop sharing protocol that transmits screen data over a network, not a desktop environment or manager.

X11 (X Window System) is the underlying display server protocol and windowing infrastructure that desktop environments run on top of, not a desktop manager itself.

SPICE (Simple Protocol for Independent Computing Environments) is a remote display protocol primarily used in virtualized environments such as KVM, not a Linux desktop manager.