What is the challenge that must be overcome with symmetric key cryptography?

What is the challenge that must be overcome with symmetric key cryptography?

• choosing the encryption algorithm to ensure the secure transfer of the key
• having the sender and receiver agree on the same secret key without anyone intercepting it
• identifying the strength of the symmetric keys for implementation
• selecting a central authority to manage the symmetric key

Explanation: With symmetric key encryption, the problem is getting the sender and receiver to agree on the same secret key without anyone else finding out. Because all keys in a secret-key cryptosystem must remain secret, the challenge has been with providing secure key management

Exam with this question: IoT Sec 1.1 Fundamentals: IoT Security Final Exam Answers