Certified Information Systems Security Professional (CISSP) — Question 65

An organization's retail website provides its only source of revenue, so the disaster recovery plan (DRP) must document an estimated time for each step in the plan. Which of the following steps in the DRP will list the GREATEST duration of time for the service to be fully operational?

Answer options

• A. Update the Network Address Translation (NAT) table.
• B. Update Domain Name System (DNS) server addresses with domain registrar.
• C. Update the Border Gateway Protocol (BGP) autonomous system number.
• D. Update the web server network adapter configuration.

Correct answer: B

Explanation

The correct answer is B because updating DNS server addresses can take a significant amount of time due to DNS propagation across the internet, which can delay the visibility of the website. Options A, C, and D involve configurations that typically take effect almost immediately, making them quicker to implement compared to DNS updates.