CISSP: Certified Information Systems Security Professional

By ISC · Question Mode

QuestionQ268

VerifiedSecurity and Risk Management

An organization’s retail website is its sole source of revenue, so its disaster recovery plan (DRP) must record an estimated duration for every step in the plan. Which of the following DRP steps will show the GREATEST amount of time before the service is fully operational?

Explanation

Changing DNS server addresses with a domain registrar can delay recovery until DNS delegation and cached name-server information expire across recursive resolvers. Domain registrars commonly use 24- to 48-hour TTLs for name-server records, so this externally propagated change can take longer than local network or server reconfiguration steps.

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