Exam: 200-301: Cisco Certified Network Associate (CCNA) 0 Likes
Which concern is addressed with the use of private IPv4 addressing? (CCNA 200-301)
Which concern is addressed with the use of private IPv4 addressing?
A. Lack of routing protocol support for CIDR and VLSM
B. Lack of security protocols at the network perimeter
C. Lack of available TCP/UDP ports per IPv5 address
D. Lack of available publicly routable unique IPv4 address
Solution
Correct answer: D. Lack of available publicly routable unique IPv4 address.
Explanation:
Private IPv4 addressing, as defined in RFC 1918, was introduced to address the problem of the limited pool of publicly routable unique IPv4 addresses. As the number of devices connected to the internet grew, the available pool of unique public IPv4 addresses became exhausted.
By using private IPv4 address ranges (10.0.0.0/8, 172.16.0.0/12, and 192.168.0.0/16), organizations can conserve the limited public IPv4 address space and still provide internal network connectivity without the need for unique public addresses for every device.
The other options are not directly addressed by the use of private IPv4 addressing:
A. Lack of routing protocol support for CIDR and VLSM is not a concern that private addressing solves.
B. Lack of security protocols at the network perimeter is not a concern that private addressing addresses.
C. Lack of available TCP/UDP ports per IPv5 address is not a real concern, as there is no IPv5 protocol.
Category: IP Connectivity