computer organization help me with this three questions please

(C) 2 (D) 3 3. technique can transmit data two times per clock period. (A) SRAM (B) DRAM (C) DDR DRAM (D) ROM 4. After the power off, still holds the data. 7. technique can make the stored data more robust to errors. (A) RAID (B) Cache (C) DMA (D) interrupt CD comnuter are of the same length o The instructions in the 8. The instructions in the computer are of the same length. (A) CISC (B) RISC (C) Pentium (D) DSP 9. Before the program execution, the program must be stored in the