Yes he is, he died in Harry Potter and the Half-Blood Prince.
Draco Malfoy was ordered by Lord Voldemort to kill Dumbledore but Severus Snape made an unbreakable vow to Narcissia Malfoy, Draco's mother, that he would protect Draco.
However, Dumbledore had put on the Gaunt's family ring, which was cursed. Snape told Dumbledore that there was no way to completely stop said curse and he'd die within a year. Dumbledore then asked Snape to be the one to kill him because murder would mutilate Malfoy's soul and it would mean Dumbledore would die the master of the Elder wand, thus breaking it's power.
It is implied in the conversation between Snape and Dumbledore that it would not be murder if Snape did it because he was requesting it as a mercy killing, in a sense.
Yes. He died in Harry Potter and the Half-Blood Prince.
No, but he thought he did. It was actually just a spell from snape
When Lord Voldemort asked Dumbledore for a job, he was still alive.
Nope. As we know from the story one person has survived the killing curse. And he had a special protection of love... All of Albus' close family was dead and so could not have the love that protected Harry since the beginning. When he was hit he was gone.
Amaranthus albus was created in 1759.
Albus Dumbledore was created in 1997.
Asphodelus albus was created in 1799.
Monopterus albus was created in 1793.
Loxechinus albus was created in 1782.
Severus Snape used a killing curse on Albus Dumbledore.
No, Albus Dumbledore doesn't smoke a pipe.
Albus Percival Wulfric Brian Dumbledore.