# FUNDAMENTALS OF COMPUTER

## BASIC COMPUTER CONCEPTS

### COMPUTER SYSTEM TYPES

 Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Predetermined standard for computer operation without failure:
 A Ability B Scalability C Reliability D Dependable
Explanation:

Detailed explanation-1: -MTBF stands for Mean Time Between Failures and is represents the average time between two failures for a repairable system. For example, three identical pieces of equipment are put into service and run until they fail. The first system fails after 200 hours, the second after 250 hours and the third after 400 hours.

Detailed explanation-2: -The ability of a system or component to function under stated conditions for a specified period of time.

Detailed explanation-3: -As stated in opening, software reliability can be defined as the probability of failure-free operation of a computer program in a specified environment for a specified time. This definition is straightforward, but, when the reliability is expressed in this way, it is hard to interpret.

Detailed explanation-4: -Product Reliability For measuring the failure rate of a software product, we can have N installations of the software under observation. If the total number of failures in all the N installations in a time period T is F, then the best estimate for the failure rate of the software is [18] = F / (N * T) .

There is 1 question to complete.