Answer: d) Hierarchy of data
Explanation:
- Hierarchy of data is defined as arrangement of data in systematic way .The arrangement of files,character,records etc is done in a particular order usually in terms of highest level and lowest level .
- According to the question ,hierarchy of data should be used for organizing data from smallest stage to highest stage for database designing.
- Other options are incorrect alphabetical designing is based on alphabetical order. Detail structure is a model made on basis of details and features.
- Data design is the model or structure that includes data and related factors as building block.Logical order is the organizing elements on basis of particular logic.
- Thus, the correct option is option(d).
Answer:
a.the number of cycles per second
Explanation:
The frequency of a sine wave is defined as the number of cycles per second.
Frequency is the inverse of the time period. The frequency of a sine wave is given by 1/TimePeriod . It is generally expressed in units of Hertz(Hz) or sec^-1. Larger the time period, lower will be the frequency and vice versa. So for higher frequency waves we need to ensure that the time period is small.
Answer:
Answer is A network access method that avoids the possibility of data collisions.
Token Ring is the precursor to Ethernet and CSMA/CD to avoid packet collisions.
Explanation: