What is the correct sentence.
- I am a IT degree holder.
- I am an IT degree holder.
What is the correct sentence.
I am an IT degree holder.
The basic rule decides whether it's an "a" or an "an" based on how you pronounce the noun. In other-words, because you pronounce "IT" as "eye-tee" it would be "an" (the noun begins with a spoken vowel).
From my marketing days, we had the acronym "FUD," pronounced "Fuhd." It would be "a FUD-based plan" (if you're wondering, FUD = "Fear, Uncertainty, and Doubt." Marketing is just one very, very small step away from lying... and more often than not you'd find that small step somewhere behind you.)
On the other hand, the acronym "FX" is pronounced "Eff-Ecks," so it gets "an." E.g., "It's an FX problem." ("FX" is used in the various entertainment industries to mean "effects" or "special effects.")
So, remember, "a" or "an" depends on how you pronounce the word/abbreviation/acronym. If the pronunciation begins with a vowel, it's "an." If it begins with a consonant, it's "a."
The "exception" is for words beginning with "H." The old rule states that all words beginning with "H" take an "an" ("I'll revisit the matter an hundred fold"). However, this rule (at least for U.S. English) is changing as the language evolves and "H" words are increasingly preceded by "a" ("Give me a hundred dollar bill"). Because this "rule change" is in flux, you'll find die-hard believers on both sides of the argument.
In my humble opinion, the reason it's changing is because we (at least the U.S. "we") are slaughtering the pronunciation of the article "a." Rather than pronouncing it correctly as "ay" (the sound you hear in the words "hay," "pay," and "clay"), it's becoming common to hear it pronounced "uh." That's why it's easier to say "a hundred dollar bill," because while "ay hundred" is difficult to roll off the tongue (thus, the rule for "an hundred"), "uh hundred" isn't. Lazy, but languages change for laziness, too.