Certified Cloud Security Professional (CCSP) Practice Exam

What does Domain Name System Security Extensions (DNSSEC) specifically provide?

1. Data integrity, origin authority, and authenticated denial of existence

2. Load balancing and data portability between different cloud infrastructures

3. Protection of storage and IP networks

4. An isolated logical data center network

The correct answer is: Data integrity, origin authority, and authenticated denial of existence

Domain Name System Security Extensions (DNSSEC) specifically addresses security vulnerabilities associated with the Domain Name System by providing mechanisms for ensuring data integrity, establishing origin authority, and authenticating denial of existence. Data integrity is ensured through cryptographic signatures that validate the authenticity of DNS data, meaning that users can trust that the information they receive has not been altered in transit. The origin authority aspect allows DNS clients to verify that the data has come from a legitimate source, preventing attacks where fraudulent entries could redirect traffic or result in man-in-the-middle scenarios. Moreover, the ability to authenticate denial of existence is crucial in confirming that a specific domain or resource does not exist; rather than simply returning an error or a negative response, DNSSEC allows a site to provide verifiable proof that the query returned a non-existent answer. The other options focus on different areas of cloud computing and network security, such as infrastructure management, storage protection, and network isolation, rather than the specific security framework provided by DNSSEC which is directly relevant to the integrity and authenticity of DNS queries and responses.