Final answer:
Cryptography provides secure transmission by encrypting data, but does not inherently ensure real-time delivery; that depends on network infrastructure and protocols. The statement is partially true.
Step-by-step explanation:
The statement that the primary advantages of using a cryptographic system include real-time delivery and secure transmission is partially true. Cryptography indeed provides secure transmission of information by encrypting data, which protects it from unauthorized access during transmission. However, cryptography itself does not inherently provide real-time delivery; real-time communication depends more on the network infrastructure and protocols in place rather than the use of cryptography.
When phone conversations, television voice, video images, or computer data are converted into binary format, cryptographic algorithms can be applied to this digital data to secure its transmission. The primary role of cryptography is to ensure data integrity, authentication, non-repudiation, and confidentiality.