Chord Dsus2 (5th fret) notes: D, A, D, E and A. You should not play the 6th string.
This chord is played by placing a barre on fret five with your index finger.
Dsus2 - D suspended 2nd guitar chord is often noted with non-standard names like D5add2, D2(no3) or D2. Sometimes it's referred to as Dadd9(no3).
1(D), 2(E), 5(A).