1-19. What  are  two  types  of  I/O coded     languages? 1. 2. 3. ASCII   and   Hollerith ASCII  and  ITA  #2 ITA   #2   and   Hollerith Five   level   tape   and   card punch 4. 1-20. Routing   indicators   have   what minimum   number   of   letters? 1. Seven 2. Six 3. Five 4. Four 1-21. In   a   routing   indicator   what does   the   third   letter identify? 1. 2. International     alliance Geographical    area Designate    relay Tributary    station 3. 4. 1-22. During   transmission   of   a message,   what   is   the   symbol ZCZC   used   for? 1. Signifies   the   start   of the   message 2. Starts   the   routing indicator     series 3. The    station    designator 4. Geographical   area   for the   final   processing station 1-23. What   precedence   of   message traffic   will   (a)   preempt   all other   traffic,   and   (b)   what is  its  position  in  the message    header? 1-24. In    the    classification position   of   a   message,   the letter   “A”   represents   what classification    or    special handling    instruction? 1. Top   Secret 2. Secret 3. SPECAT 4. Confidential 1-25. In  positions  5  through  8,  a CAI  of  ZYVW  tells  the operator   that   this   is   what type   of   message? 1. EAM 2. Service 3. Information 4. Pass-through 1-26. At   a   tributary   station   the TOF  and  TAD  are  used  for what    reason? 1. Determine message-processing times 2. Calculate    delivery    times only 3. Calculate    delivery    and source    times 4. Determine    message receipt    times 1-27. What  types  of  messages  of  up to  100  lines  can  be  sent without   paging   the   text? 1. NAVAIR   and   NOTAMs 2. HYDROLANT    and    HYDROPAC 3. Statistical    and meteorological Data   image   and   tributary 4. 1. (a)  Yankee (b) 1 2. (a)  Yankee (b) 3 3. (a)  Immediate (a)  ECP (b) 1 4. (b) 2 3