Which network allows devices to communicate without the need to access the Internet?
Which network allows devices to communicate without the need to access the Internet?
This question focuses on the use of private IP address ranges that allow devices to communicate on a local network without needing access to the public Internet. The private IP address ranges as defined by RFC 1918 are as follows: Class A ranges from 10.0.0.0 to 10.255.255.255, Class B ranges from 172.16.0.0 to 172.31.255.255, and Class C ranges from 192.168.0.0 to 192.168.255.255. Among the options provided, only the network 172.28.0.0/16 falls within the Class B private IP address range. Therefore, the correct answer is 172.28.0.0/16.
Private Address Ranges -------------------------------------- Class A 10.0.0.0 to 10.255.255.255 Class B 172.16.0.0 to 172.32.255.255 class C 192.168.0.0 to 192.168.255.255 So 172.28.0.0/16 in the range of Private IPs in Class B. Answer is B.
Class B should be 172.16.0.0 to 172.31.255.255
This question is really badly worded, it's asking what type of address SHOULD you use if you're not connecting to the internet I.E. to save on IPv4 addresses. Therefore the only private address is correct.
This is surely the kind of question which one has to think further and try to predict what the intention behind it actually is. Surely, any network if working isolated from the internet can work with any IP addresses whether private or public. If you will connect this isolated network later to the Internet, if private you will need a NAT and if public (and not assigned to you) you will encounter problems. In any case you can have as well any public ip addresses behind a a NAT as long as the NAT will translate them to a valid public addresses (assigned to you). Unfortunately, poorly written questions are copied from one web site to another. I like about this site that they give the opportunity to vote and discuss the questions. I wonder if CISCO itself had cases of poor questions. Any cases or experiences reported?
poorly written question like this is unfair for those who are not native English speaker. like me.
ALL of the answers are correct for what this question ACTUALLY asks, however I believe what they are meaning to ask is which network belongs in the private address range and therefore CANNOT communicate across the internet. Therefore the answer is B. 172.28.0.0/16 which is the only private address range presented.
Private IP Address Range by IETF Class A 10.0.0.0-10.255.255.255 Class B 172.16.0.0 - 172.31.255.255 Class C 192.168.0.0 - 192.168.255.255
Definitely B
I agree with the 172.28 being a defined range in 1918, that does not mean the other addresses couldn't work I assure you. That question is not what is a valid 1918 range, the question is which would work if we didn't need public access and they all would.
An IP network, which is not connected to the public Internet, uses private IP addresses. There is a privare IP addresse range per each IP address class. A. 172.9.0.0/16 A class B, public IP address range. Wrong answer. B. 172.28.0.0/16 A class B, private IP address range. Correct answer. C. 192.0.0.0/8 A class C, public IP address range. Wrong answer. D. 209.165.201.0/24 A class C, public IP address range. Wrong answer.
this doesn't make sense to me and I cannot find anything when googling it, as far as I am aware any local network will work so unsure on why the answer is B?
172.28.0.0/16 is the only subnet part of the private address-range defined in RFC 1918. The private addresses are: 10.0.0.0/8 172.16.0.0/12 192.168.0.0/16 https://en.wikipedia.org/wiki/Private_network
Using a private address doesn’t mean The device “doesn’t need to access the internet “ - You can still use NAT. this question Is poorly written
Totally B Contact me for full questions <a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="ddb0bca9a9b4a9b4ae9db2a8a9b1b2b2b6f3beb2b0">[email protected]</a>
B is the correct answer
B is correct
Class B 172.16.0.0 to 172.32.255.255
private range class A: 10.0.0.0 - 10.255.255.255 | 10.0.0.0 /8 class B: 172.16.0.0 - 172.31.255.255 | 172.16.0.0 / 12 class C: 182.168.0.0 - 192.168.255.255 | 192.168.0.0/16
B Class-B Private address
why wouldn't C work?
in the class C private range start with 192.168 and not 192.0. This is why C wouldn't work