Which statement about network protocols is true?

Which statement about network protocols is true?

• A. Protocols are rules that govern communication between networked entities.
• B. Protocols enforce physical hardware manufacturing standards.
• C. Protocols are the same as programming languages.
• D. Protocols only control data encryption.

Answer: (A)

Protocols establish the rules for how devices communicate over a network. They define message formats, sequencing, addressing, error handling, and the steps to establish and terminate communications, so all networked entities can interpret and respond correctly. This makes the statement true because without these shared rules, different devices and software wouldn’t be able to understand each other. The other options miss the broader role of protocols: they don’t set hardware manufacturing standards, they aren’t the same as programming languages, and they cover more than encryption alone, including routing, addressing, and data integrity.

Protocols establish the rules for how devices communicate over a network. They define message formats, sequencing, addressing, error handling, and the steps to establish and terminate communications, so all networked entities can interpret and respond correctly. This makes the statement true because without these shared rules, different devices and software wouldn’t be able to understand each other. The other options miss the broader role of protocols: they don’t set hardware manufacturing standards, they aren’t the same as programming languages, and they cover more than encryption alone, including routing, addressing, and data integrity.