Which DNS record types can the command dnssec-signzone add to a zone? (Choose 3 correct answers)

Which DNS record types can the command dnssec-signzone add to a zone? (Choose 3 correct answers)

• A. ASIG
• B. NSEC
• C. NSEC3
• D. RRSIG

Answer: (B)

The command `dnssec-signzone` is used for signing zones in a DNS (Domain Name System) environment with DNSSEC (Domain Name System Security Extensions). This command is capable of adding several types of DNS records associated with DNSSEC. Among the specific record types that `dnssec-signzone` can add, the NSEC record is a key component of DNSSEC. NSEC records provide authenticated denial of existence for domain names, essentially linking sequential DNS records together and establishing a proof chain that certain records do not exist. This feature helps prevent certain types of DNS attacks, such as cache poisoning. Aside from NSEC records, the command also generates RRSIG records, which contain the cryptographic signatures for DNS records. Each RRSIG entry corresponds to a specific DNS record set and is crucial for validating the authenticity and integrity of the records it protects. The NSEC3 record type, which is an alternative to NSEC, also fits into this context as it enhances privacy by using a hashed solution for denoting gaps in DNS records. This avoids direct enumeration of domain names, which can expose the domain structure. In summary, `dnssec-signzone` can add NSEC, NSEC3, and RRSIG records to a zone

The command dnssec-signzone is used for signing zones in a DNS (Domain Name System) environment with DNSSEC (Domain Name System Security Extensions). This command is capable of adding several types of DNS records associated with DNSSEC.

Among the specific record types that dnssec-signzone can add, the NSEC record is a key component of DNSSEC. NSEC records provide authenticated denial of existence for domain names, essentially linking sequential DNS records together and establishing a proof chain that certain records do not exist. This feature helps prevent certain types of DNS attacks, such as cache poisoning.

Aside from NSEC records, the command also generates RRSIG records, which contain the cryptographic signatures for DNS records. Each RRSIG entry corresponds to a specific DNS record set and is crucial for validating the authenticity and integrity of the records it protects.

The NSEC3 record type, which is an alternative to NSEC, also fits into this context as it enhances privacy by using a hashed solution for denoting gaps in DNS records. This avoids direct enumeration of domain names, which can expose the domain structure.

In summary, dnssec-signzone can add NSEC, NSEC3, and RRSIG records to a zone