YES

Guava.

See the article in Wikipedia on "layering". The term 'soil layering' is sometimes used to distinguish this outdoor layering technique from 'air layering' which is more usually done on indoor plants, although it may be done on outdoor plants such as Magnolia which are difficult to root by cuttings and usually do not have branches that can be brought down to the ground for 'soil layering'.

they are:

sexual propagation & asexual proagation.

yes, by air layering with a mixture of compost and moss.