CCNA: Cisco Certified Network Associate — Question 864

What is the benefit of using private IPv4 addressing?

Answer options

• A. to enable secure connectivity over the Internet
• B. to shield internal network devices from external access
• C. to provide reliable connectivity between like devices
• D. to be routable over an external network

Correct answer: B

Explanation

The correct answer is B because private IPv4 addresses are not routable on the internet, which helps to protect internal network devices from external access. Options A and D are incorrect as private IPv4 addresses do not enable secure connectivity over the Internet or allow for routing on external networks. Option C is misleading as private addressing does not inherently provide reliable connectivity between devices.