As technology advances, traditional blockchain networks are facing new challenges, with the rise of quantum computing being a particularly noteworthy threat. Traditional encryption algorithms prove inadequate against the power of quantum computers, posing a threat to the security of conventional blockchains. However, STARKNET, as a new generation blockchain technology, is considered the ultimate form of blockchain from a technical perspective, possessing unique capabilities to resist attacks from quantum computers.

Firstly, STARKNET utilizes Zero-Knowledge Proofs (ZK) technology, which is particularly crucial in the context of quantum computing. Zero-Knowledge Proofs allow for the verification of transactions without revealing detailed information. Even under the threat of quantum computers, user privacy and transaction data remain effectively protected. This is crucial for building a highly secure blockchain network, ensuring that STARKNET can safeguard user privacy in the era of quantum computing.

Secondly, STARKNET employs the STARK (Scalable Transparent ARguments of Knowledge) proof system. Compared to traditional blockchain systems, STARK offers higher security while maintaining scalability and high throughput. The threat posed by quantum computers primarily lies in their ability to break traditional encryption algorithms. The robust security of STARK makes it a powerful tool for resisting quantum computer attacks.

Furthermore, STARKNET adopts the Cairo language, a programming language designed specifically for the STARK proof system. The introduction of the Cairo language simplifies the logic of smart contracts while retaining powerful expressive capabilities. In the face of the threat posed by quantum computers, the design of the Cairo language facilitates the more efficient expression of complex smart contract logic, providing a convenient tool for blockchain development.

Lastly, STARKNET's architecture is optimized at the virtual machine level, ensuring the efficient execution of Cairo language smart contracts. This is crucial for blockchain performance, and STARKNET achieves high performance through the thoughtful design of its virtual machine, prioritizing both efficiency and developer user experience.

In conclusion, STARKNET is considered the ultimate form of blockchain because it approaches the threat of quantum computing from a technical perspective, considering all aspects and taking a series of powerful measures for prevention. The synergy of its ZK technology, STARK proof system, Cairo language, and virtual machine makes STARKNET the most forward-thinking and risk-resistant technological solution in the current blockchain landscape. In the era of quantum computing, STARKNET is poised to lead the development direction of blockchain technology, ensuring the security and sustainability of the entire network.