What are the IETF specifications for securing DNS queries to second-level .gov domain servers?

What are the IETF specifications for securing DNS queries to second-level .gov domain servers?

• A. TSIG
• B. GSS-rSrG
• C. SIG
• D. DNSSEC

Answer: (D)

The choice of DNSSEC as the correct answer is grounded in its role as a suite of extensions to DNS that provides authentication and integrity for DNS data. DNSSEC allows clients to verify that the responses they receive from DNS servers are authentic and have not been altered in transit. This is particularly important for second-level .gov domain servers, where the integrity and authenticity of data are crucial for ensuring secure communications and reducing the risk of attacks such as DNS spoofing. DNSSEC does this by adding digital signatures to the DNS data, enabling resolvers to validate the information against these signatures. When a client makes a DNS query to a .gov domain server secured with DNSSEC, it can receive signed records that confirm the legitimacy of the responses provided, thereby enhancing the overall security of the DNS ecosystem. In contrast, while other options like TSIG (Transaction Signature) do provide cryptographic signing to authenticate DNS messages, its use is more applicable to securing communications between DNS servers rather than safeguarding the integrity of queries to authoritative name servers. GSS-rSrG and SIG do not specifically pertain to the security of DNS queries in the context of entire domain servers like .gov as DNSSEC does. Thus, DNSSEC stands out for its comprehensive approach to securing domain name

The choice of DNSSEC as the correct answer is grounded in its role as a suite of extensions to DNS that provides authentication and integrity for DNS data. DNSSEC allows clients to verify that the responses they receive from DNS servers are authentic and have not been altered in transit. This is particularly important for second-level .gov domain servers, where the integrity and authenticity of data are crucial for ensuring secure communications and reducing the risk of attacks such as DNS spoofing.

DNSSEC does this by adding digital signatures to the DNS data, enabling resolvers to validate the information against these signatures. When a client makes a DNS query to a .gov domain server secured with DNSSEC, it can receive signed records that confirm the legitimacy of the responses provided, thereby enhancing the overall security of the DNS ecosystem.

In contrast, while other options like TSIG (Transaction Signature) do provide cryptographic signing to authenticate DNS messages, its use is more applicable to securing communications between DNS servers rather than safeguarding the integrity of queries to authoritative name servers. GSS-rSrG and SIG do not specifically pertain to the security of DNS queries in the context of entire domain servers like .gov as DNSSEC does.

Thus, DNSSEC stands out for its comprehensive approach to securing domain name