Yes
No.
Gautama Buddha, Ashoka, the Dalai Lama.
Gautama Buddha. Kwan Yin. Dalai Lama.
Nobody can tell, even Dalai Lama himself, because Buddha has made a rule not to disclose the spiritual state of monk. Therefore Dalai Lama will not disclose his enlightenment nor common people will understand easily.
Buddha, also known as Siddhartha Gautama, was the founder of Buddhism in the 5th century BCE, while the Dalai Lama is a title given to the spiritual leader of Tibetan Buddhism, believed to be an incarnation of Avalokiteshvara, the Bodhisattva of compassion. The Dalai Lama's teachings are rooted in the principles established by Buddha, and he serves as a prominent figure in the dissemination of Buddhist philosophy and practice. Although they lived in different times, the Dalai Lama's role is to continue and uphold the teachings of Buddha, adapting them to contemporary contexts in Tibetan culture and beyond.
There are any number of enlightened beings (Buddhas) in the world. The Dalai Lama, for example is held to be the reincarnation of the Buddha of Compassion.
Arguably the most famous Buddhist is the Dalai Lama.
The 14th Dalai Lama is the current Dalai Lama. He was born in 1935 and he is still alive.
His Holiness the 14th Dalai Lama is the reincarnation of the 13th Dalai Lama. As an avalokitesvara, the Bodhisattva of compassion, his duty is to teach humanity the Dharma, which is the teaching of the Buddha (founder of Buddhism) and lead sentiment beings towards enlightment.
The 14th Dalai Lama is Tenzin Gyatso.
The Dalai Lama won't retire. Like being a Bishop, being a Lama is a job for life. At the Dalai Lama's death, a new Dalai Lama will be chosen by the High Lamas of the Gelugpa tradition of Tibetan Buddhism.
The cast of Dalai Lama Awakening - 2014 includes: The Dalai Lama as himself