7-32. External microcomputer I/O operations are usually handled by which of the following devices? 1.  A  single  serial  port 2.  A  single  parallel  port 3.  A  single  printed  circuit  board 4.  Multiple  printed  circuit  boards 7-33. Examples of consistencies found in the architecture of a computer’s I/O section include which of the following? 1.  Types  of  external  equipments 2.  The  arrangement  and  format  of  the information   exchanged 3.  The  type  and  number  of  interfaces possible 4.  The  type  of  circuits  used  to  process I/O  information 7-34. If a printer senses a paper jam during a print operation, which of the following actions would occur? 1.  A  control  word  would  be  sent  by  the computer  specifying  an  error condition 2.  A  control  word  would  be  sent  to  the computer  specifying  an  error condition 3.  A  data  word  would  be  sent  by  the computer  specifying  a  special condition 4.  A  data  word  would  be  sent  to  the computer  specifying  a  special condition 7-35. Handshaking is also known by which of the following terms? 1.   Function   control   word 2.   External   interrupt   words 3.  Both  1  and  2  above 4.  Alphabetic  and  numeric  data exchange 56 7-36. The type of interface used when all bits of information represented by a byte or word are input or output simultaneously is known as which of the following formats? 1.  Serial  format 2.   Parallel   format 3.   8-bit   word   format 4.   32-bit   word   format 7-37. Command instructions provide control over which of the following areas/operations? 1.  Main  memory 2.  CPU  operations 3.  IOC  single  and  dual  channel operations 4.  Interrupt  driven  I/O  operations 7-38. The I/O command start instruction accomplishes which of the following actions? 1. Specifies an IOC, then halts further CPU processing 2. References specific main memory addresses 3. Executes a previously stored IOC command 4. Indicates to the CPU that the command has been processed 7-39. The CPU will delay processing while waiting for an I/O operation only during which of the following actions? 1 . Execution of input chain operations 2 . Execution of output chain operations 3 . Actual data transfer operations 4 . Executions of an I/O command start instruction