CCNA: Cisco Certified Network Associate — Question 770

How do UTP and STP cables compare?

Answer options

• A. UTP cables provide faster and more reliable data transfer rates and STP cables are slower and less reliable.
• B. STP cables are shielded and protect against electromagnetic interference and UTP lacks the same protection against electromagnetic interference.
• C. STP cables are cheaper to procure and easier to install and UTP cables are more expensive and harder to install.
• D. UTP cables are less prone to crosstalk and interference and STP cables are more prone to crosstalk and interference.

Correct answer: B

Explanation

The correct answer is B because STP cables have shielding that protects them from electromagnetic interference, making them more reliable in environments with potential interference. A is incorrect as UTP is generally faster and more reliable in typical scenarios. C is wrong because STP is usually more expensive than UTP, and D is incorrect because UTP cables are actually less prone to crosstalk and interference compared to STP cables.