10-31. 10-32. 10-33. 10-34. 10-35. Storage of data using a magnetic tape unit is based on which of the following principles? 1. 2. 3. 4. Current flow in a conductor can be generated by a change in the magnetic lines of force that cut through a conductor Changing the current flow in a conductor creates a change in the magnetic lines of force radiating from the conductor Both 1 and 2 above Current flow cannot be created by moving a conductor  through  a  magnetic  field ^- The electromagnetic-type conductor used to create a magnetic spot on a magnetic tape is called a 1.  read  head 2.  write  head 3.  flux  pattern 4. magnetic oxide A magnetic spot recorded on a magnetic surface may be sensed by an electromagnetic-type conductor called a 1.  read  head 2.  write  head 3.  flux  pattern 4. magnetic oxide Data stored on a magnetic surface may only be read once. 1.  True 2.  False A flux pattern magnetized in one direction to indicate a binary ONE and the opposite direction to indicate a binary ZERO is a characteristic of which of the following recording techniques? 1.  Return-to-zero 2. Non-return-to-zero 3. Phase encoding 10-36. 10-37. 10-38. 10-39. 10-40. 10-41. 70 Using narrow current spikes to write small flux patterns is a characteristic of which of the following recording techniques? 1.  Return-to-zero 2.  Non-return-to-zero 3. Phase encoding A binary ONE indicated by a change in flux direction is a characteristic of which of the following recording techniques? 1.  Return-to-zero 2. Non-return-to-zero 3. Phase encoding What recording technique, if any, provides for the highest data density? 1.  Return-to-zero 2. Non-return-to-zero 3. Phase encoding 4. None; they all provide the same density An invisible line on a tape where data is written or read a bit at a time is called a 1.   file 2.  frame 3.   record 4.  track Data bits written concurrently across the width of the tape are called a 1.   file 2.   frame 3.   record 4.   track Which of the following terms indicates the density of data stored on multitrack tape? 1. Bits per inch 2. Characters per inch 3. Frames per inch 4. Records per inch