Answer: DNSSEC(Domain Name System Security Extensions) is the used for protection of the applications by signing the DNS data records in digital form.The purpose of the DNSSEC is to validate the DNS signatured area.
DNSSEC is used for securing the traffic by providing access to the authorized party only .Cryptography is a useful tool for the securing the network traffic make the traffic of the networks hidden which make it safe from attacks and hacks.Traffic encryption mechanism is used in many field to protect the transmission from theft.The digitally signed transaction can be viewed or decrypted by only authorized by when required and thus manages the traffic.
E.g.- bank uses this technology while transactions take place to make it secure.