Please explain and show steps. Thank you!

Q.1 What language is accepted by the following PDA o-(q0; qi; q2} ; -a; b } ; Stack symbols {a; b; z} ; starting state q0; final state q2; initially on the stack z, with transitions &ql; b; a) = ((q1; b)); &ql; b; b) = {(ql; b)) ; Q. 2 Construct PDA's that accept the following regular languages (c) L={aibchi,j, k 20 and,-iorj = k}