10-42. A nine-track magnetic tape contains (a) what
number of data bits and (b) what number of
parity bits?
1. (a) 7 (b) 2
2. (a) 8 (b) 1
3. (a) 9 (b) 1
4. (a) 9 (b) O
10-43. In which of the following recording techniques is
the presence of a frame indicated by the
detection of a binary ONE?
1. Return-to-zero
2. Phase encoding
3. Non-return-to-zero
4. Non-return-to-zero indiscrete
10-44. When writing or searching for data, which of the
following tape markings is a common starting
point used by a system?
1. BOT
2. EOT
3. Both 1 and 2 above
4. IRG
10-45. Data cannot be written or read under which of
the following conditions?
1. The tape is stopped
2. The tape is just starting to move
3. The tape is stopping movement
4. All of the above
10-46. The start/stop effect creates a blank spot on the
tape until which of the following conditions is
met?
1. The tape is up to speed
2. The tape is stopped
3. The tape is starting to move
4. The tape is stopping movement
10-47. A group of contiguous frames is called a
10-48. Record length is fixed by the magnetic tape
device.
1. True
2. False
10-49. A file can be defined as a group of
1. bits
2. characters
3. frames
4. records
10-50. Every file on a tape ends with a
1. file mark
2. interrecord gap
3. parity bit
4. record
10-51. Which of the following parity checks uses each
frame’s parity bit?
1. Odd
2. Even
3. Lateral
4. Longitudinal
10-52. The parity bit in a seven-track frame consisting of
011101 is a ONE for which of the following
parity formats?
1. Odd
2. Even
3. Lateral
4. Longitudinal
10-53. Odd parity is commonly used with
non-return-to-zero indiscrete recording for what
purpose?
1. File mark
2. Frame identification
3. Interrecord timing
4. Tape speed
1. file
2. record
3. software
4. track
71
