Josh's boss asked him to write a letter to their customers explaining some upcoming price increases, but Josh was in a hurry to get off work, so he didn't take the time to get the information he needed to explain the increase. As a result, the e-mail was confusing and disorganized. Josh's e-mail has the characteristics of . ineffective communication
workplace communication
effective communication
barriers to communication

The reliability of a hard-disk drive is typically described in terms of a quantity called mean time between failures (mtbf). although this quantity is called a “time,” the mtbf actually is measured in drive-hours per failure. if a system contains 1,000 disk drives, each of which has a 750,000-hour mtbf, which of the following best describes how often a drive failure will occur in that disk farm: once per thousand years, once per century, once per decade, once per year, once per month, once per week, once per day, once per hour, once per minute, or once per second?