A company currently uses public IP addresses. However, recent acquisitions have caused the company to run out of IP address space. The company needs to migrate to a private IP address range but still allow all devices to communicate on the Internet. Which of the following is a private IP address that can be used by the company? (Select the best answer.)

Question

BlackTom AI · Accepted Answer

First, let's restate the problem in our own words and list the options so we can evaluate them carefully.
Question: A company needs to migrate from public IPs to private IP ranges but still have Internet connectivity for all devices. Which of the following is a private IP address that can be used?
Answer choices: A. 192.192.11.1  B. 172.31.3.16  C. 10.1.1.273  D. 11.12.13.14

Now, evaluate each option one by one:
Option A: 192.192.11.1
- Reasoning: Private IP ranges include 10.0.0.0/8, 172.16.0.0/12, and 192.168.0.0/16. The address 192.192.11.1 does not fall into 192.168.0.0/16, so it is not a private address. Additionally, it falls outside the standard private blocks, so this is not suitable as a private range for internal use.

Option B: 172.31.3.16
- Reasoning: This address is in the 172.16.0.0/12 block (172.16.0.0 through 172.31.255.255), which is designated as private IPv4 space. Therefore, 172.31.3.16 is a valid private address that can be used internally while devices still access the Internet via a NAT gateway or similar mechanism.

Option C: 10.1.1.273
- Reasoning: The 10.0.0.0/8 block is private, but an IPv4 address must have each octet in the range 0–255. The last octet here is 273, which is invalid and cannot be used on a network. This is not a valid IP address at all, private or otherwise.

Option D: 11.12.13.14
- Reasoning: This address lies outside all private IPv4 ranges (10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16). Consequently, it would be a public IP address, not suitable for a private address space.

Summary of reasoning for each option:
- A is invalid as private ranges do not include 192.192.x.x; it does not belong to 192.168.0.0/16 or any listed private block.
- B is valid because 172.31.3.16 resides in 172.16.0.0/12, a recognized private address space.
- C is invalid due to an out-of-range octet (273), making the address unusable regardless of private/public classification.
- D is invalid because 11.12.13.14 is not within any private range and would be a public IP.

Based on the above analysis, the best private IP address that can be used by the company is the one in the private 172.16.0.0/12 range: 172.31.3.16.

CS 410.01-Spring 2025 ST: Cyber Security Quiz 4

View Explanation

Log in for full answers

Similar Questions

Which of the following addresses is not an RFC1918 address?

Which of the following addresses is an address that is reserved for internal use only as it would not route on the internet?

In a consumer society, many adults channel creativity into buying things

Economic stress and unpredictable times have resulted in a booming industry for self-help products

People born without creativity never can develop it

A product has a selling price of $20, a contribution margin ratio of 40% and fixed cost of $120,000. To make a profit of $30,000. The number of units that must be sold is: Type the number without $ and a comma. Eg: 20000

Which of the following statement regarding cost is correct:

Under the assumptions used in cost-volume-profit analysis, as the activity increases:

More Practical Tools for Students Powered by AI Study Helper

Homework AI Solver

Stylized AI Paper Writer

Plagiarism Checker Assistant

Citation AI Academic Writing Tool

In-Class Translation Assistant

AI Note Generator

AI Quiz Answers

Past Exam Questions from University Test Bank

Smart Practice Assistant

Adaptive Practice

Making Your Study Simpler