Exam 200-301 All QuestionsBrowse all questions from this exam
Question 14

An engineer must configure a /30 subnet between two routes. Which usable IP address and subnet mask combination meets this criteria?

    Correct Answer: A

    To configure a /30 subnet, the subnet mask 255.255.255.252 is correct. Option A provides an IP address with this subnet mask, and while 10.2.1.3 might typically be a broadcast address in a larger subnet, in a /30 subnet specifically designed for point-to-point links, it remains a usable IP address. Thus, 10.2.1.3 with the subnet mask 255.255.255.252 is a valid option for a router interface configuration.

Discussion
rugginicOption: D

answer is D. The up in A is a broadcast

dendio

Right, A is the broadcast address - it is explained in better detail here: https://stackoverflow.com/questions/29034878/how-can-i-determine-network-and-broadcast-address-from-the-ip-address-and-subnet

r8derfan33Option: D

Wait? What? Did you look at the subnet mask? 225.255.255.252?

Ali526

There is typo in D; should be 255.255.255.252. Having said that, it's the correct answer.

Smaritz

To be honest, I didn't even notice the typo LOL

Tengereni

thats a typo

GreatDaneOption: D

A. interface e0/0 description to XX-AXXX:XXXXX ip address 10.2.1.3 255.255.255.252 Given address belongs to subnet 10.2.1.0/30, and it’s the broadcast address inside that subnet. Wrong answer. B. interface e0/0 description to XX-AXXX:XXXXX ip address 192.168.1.1 255.255.255.248 Given address belongs to subnet 192.168.1.0/29. Wrong answer. C. interface e0/0 description to XX-AXXX:XXXXX ip address 172.16.1.4 255.255.255.248 Given address belongs to subnet 172.16.1.0/29. Wrong answer. D. interface e0/0 description to XX-AXXX:XXXXX ip address 209.165.201.2 225.255.255.252 Given address belongs to subnet 209.165.201.0/30, which ranges from 209.165.201.1 to 209.165.201.2. Correct answer.

Lexus_bong

I still don’t understand how it calculate.

juneq888Option: A

Was there an instance in the actual exam wherein the choices are typographical errors? Because I chose A over D thinking that it was intentionally written as 225.

Layfon

If these are updated questions how is this typo still here

doctot_tlcOption: D

The Answers B and C are out because their submask have the prefix /29, in A the 10.2.1.3 is the broadcast of 10.2.1.0 network. The answer correct is D because 209.165.201.2 is the 2nd available IP for 209.165.201.0 network.

SiliconeITOption: A

The answer is A, I saw some saying that A is a broadcast address and would like to remind everyone that broadcast addresses can be reconfigured while the mistake of having subnet mask 225.255.255.251 eliminates it as a candidate

Da_CostaOption: D

The correct answer is D although the subnet mask is strange

Taku2023Option: A

225.255.255.252 Is an invalid subnet mask

Rydaz

its a typo

Taju711

Did anyone have any latest exam re

michael1001

Need to fix the question as well, says routes instead of routers. Very confusing.

MattschwimOption: D

D is the obvious choice for me Contact me for full questions <a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="1974786d6d706d706a59766c6d75767672377a7674">[email protected]</a>

SantiniOption: A

The answer is A. Yes it it a board cast address but it’s also a point to point link, which doesn’t need to utilize the broadcast IP. So we can assign it to a device instead. Plus the scenario doesn’t mention using public IP addresses go a routers to communicate. It’s could be a vpn connection for all we know.

Santini

Ohh another thing. Only switches broadcast and routers drop broadcast traffic by default. So all the broadcast discussion is non-sense.

xtraMiles

Agree! No broadcast in P2P. A is correct.

KuyaErik101Option: D

Correct

IU1CYF

i think that there is also a typo in the question..."routes" instead of "router"...

duongccnaOption: D

D, 4 subnet, 0 - 1 -2 -3 , 3 is broadcast and dont use 0

bikila123Option: D

A is Broadcast address of a given network , /30 have only 2 usable host so the correct answer is D.