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ExamsCAS-003Questions#172
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CAS-003 · Question #172

CAS-003 Question #172: Real Exam Question with Answer & Explanation

The correct answer is B: 98.06 percent. A web application firewall (WAF) is an appliance, server plugin, or filter that applies a set of rules to an HTTP conversation. Generally, these rules cover common attacks such as cross-site scripting (XSS) and SQL injection. By customizing the rules to your application, many att

Question

There have been some failures of the company's internal facing website. A security engineer has found the WAF to be the root cause of the failures. System logs show that the WAF has been unavailable for 14 hours over the past month, in four separate situations. One of these situations was a two hour scheduled maintenance time, aimed at improving the stability of the WAF. Using the MTTR based on the last month's performance figures, which of the following calculations is the percentage of uptime assuming there were 722 hours in the month?

Options

  • A92.24 percent
  • B98.06 percent
  • C98.34 percent
  • D99.72 percent

Explanation

A web application firewall (WAF) is an appliance, server plugin, or filter that applies a set of rules to an HTTP conversation. Generally, these rules cover common attacks such as cross-site scripting (XSS) and SQL injection. By customizing the rules to your application, many attacks can be identified and blocked. 14h of down time in a period of 772 supposed uptime = 14/772 x 100 = 1.939 % Thus the % of uptime = 100% - 1.939% = 98.06%

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There have been some failures of the company's internal facing... | CAS-003 Q#172 Answer | NerdExam