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------------------------------------------------ One of the requirements for a new device you’re adding to the network is an availability of 99.9 percent. According to the vendor, the newly acquired device has been rated with an MTBF of 20,000 hours and an MTTR of 3 hours. What is the most accurate statement?

A. The device will meet availability because it will be at 99.985 percent.
B. The device will not meet availability because it will be at 99.89 percent.
C. The device will not meet availability because it will be at 99.85 percent.
D. The device will meet availability because it will be at 99.958 percent.

Using the provided MTBF and MTTR values, the device has an availability of 99.985 percent, which exceeds the required 99.9 percent availability. Thus, the accurate statement is that the device will meet the availability requirement. the correct option is A that is The device will meet availability because it will be at 99.985 percent.

To determine if the device will meet the required availability of 99.9 percent, we can use the Mean Time Between Failures (MTBF) and Mean Time To Repair (MTTR) provided by the vendor. The formula for calculating availability is as follows:

Availability (%) = (MTBF / (MTBF + MTTR)) * 100

Using the values given by the vendor, we have:

MTBF = 20,000 hours

MTTR = 3 hours

If we plug these values into the formula, we get:

Availability = (20,000 / (20,000 + 3)) * 100

Availability = (20,000 / 20,003) * 100

Availability
= 99.985 percent

Therefore, the most accurate statement is:

A. The device will meet availability because it will be at 99.985 percent.