Answer:
1. With a Caeser cipher, if we use either a 1 letter, 2 letter or 3 letter shift (as defined below), which is the plaintext for: DCEMYCTFU
Additional information:
For a 1 letter shift: abcdefghijklmnopqrstuvwxyz BCDEFGHIJKLMNOPQRSTUVWXYZA for two shifts: abcdefghijklmnopqrstuvwxyz CDEFGHIJKLMNOPQRSTUVWXYZAB and three shifts: abcdefghijklmnopqrstuvwxyz DEFGHIJKLMNOPQRSTUVWXYZABC
Ans: backwards