Which item is used to secure communications in the network architecture?

• A. Rf Equipment
• B. Antenna
• C. Ine
• D. Crypto

Answer: (D)

Securing communications in a network relies on cryptography—transforming data into an unreadable form for anyone without the proper key and then restoring it at the destination, while also guarding against tampering and impersonation. The tool that provides this protection in the network is crypto equipment. It performs the encryption and decryption, manages cryptographic keys, and often supports authentication and integrity checks so messages can be trusted and remain confidential as they traverse the network.

RF equipment and antennas, by contrast, are about moving the signal over air; they don’t protect the content of the message. The other term listed isn’t a cryptographic mechanism, so it wouldn’t secure communications.