Final answer:
To secure source code transmitted over the internet, a network administrator should implement encryption. This will ensure the code remains unintelligible if intercepted, safeguarding the transmitted data.
Step-by-step explanation:
If a network administrator wants to enhance the security of source code being transmitted over the internet and ensure it is difficult to understand if intercepted, they should use encryption. Encryption is the process of converting information or data into a code, especially to prevent unauthorized access.
To secure source code transmitted over the internet, a network administrator should implement encryption. This will ensure the code remains unintelligible if intercepted, safeguarding the transmitted data.
By encrypting the code before it's sent and then decrypting it only at the remote branch, the company ensures that even if the transmitted data is intercepted, it would be illegible and unusable to the attacker without the corresponding decryption key.