In DNSSEC what are the advantages of separating the function

In DNSSEC, what are the advantages of separating the functions of KSK and ZSK?

Solution

The advantages of separating the functions KSK (Key Signing Key) and ZSK (Zone Signing Key) are as follows,

When the Zone Signing Keys are updated then there is no parent or child zone interaction is required.

The KSK effective period can be longer than the ZSK.

If the usage of key is high, then the KSK become stronger.

The KSK has a little impact on a performance when the usages of keys are high.

The KSK updated less frequently than other data in the zone. It is used to sign a DNSKEY (Domain Name System KEY) and RRset (Resource Record Set) .

The KSK stores data separately in a safer location than ZSK.