CRC (Cyclic Redundancy Check) is not an example of a cryptographic hash function. While CRC is a checksum algorithm used for error-checking in data transmission, it is not designed for cryptographic purposes like the other options listed.
The other options, DNS (Domain Name System), SHA-2 (Secure Hash Algorithm 2), MD5 (Message Digest 5), and SHA (Secure Hash Algorithm), are cryptographic hash functions used for various security-related applications such as data integrity verification, password storage, and digital signatures.