New Year Sale 2026! Hurry Up, Grab the Special Discount - Save 25% - Ends In 00:00:00 Coupon code: SAVE25
Welcome to Pass4Success

- Free Preparation Discussions
Mail Us support@pass4success.com
Location US
Mob_nav_barsMENU

HPE3-U01 Exam - Topic 6 Question 64 Discussion

Actual exam question for HP's HPE3-U01 exam
Question #: 64
Topic #: 6
[All HPE3-U01 Questions]

How many IP assignable addresses are contained in 10.0.128.0/23?

Show Suggested Answer Hide Answer
Suggested Answer: D

by Maurine at Jul 12, 2025, 09:20 AM

Limited Time Offer

25%

Off

Get Premium HPE3-U01 Questions as Interactive Web-Based Practice Test or PDF

Contribute your Thoughts:

0/2000 characters
Submit Cancel
India
2 months ago
Nope, definitely 510. The subnet mask tells you that.
upvoted 0 times
...
Dudley
2 months ago
Totally agree, 510 is the right answer!
upvoted 0 times
...
Chuck
2 months ago
It's 510 assignable addresses in that range.
upvoted 0 times
...
Rickie
3 months ago
Wait, are you sure? I thought it was more like 512.
upvoted 0 times
...
Patrick
3 months ago
Wow, I didn't know it was that specific!
upvoted 0 times
...
Gilma
3 months ago
I thought it was 4094 for a /23, but now I’m questioning that. I need to double-check how the subnetting works.
upvoted 0 times
...
Alida
3 months ago
I’m a bit confused about the math here. Is it 512 total addresses minus 2 for the network and broadcast? That would leave 510, right?
upvoted 0 times
...
Stephaine
4 months ago
I practiced a similar question last week, and I think it was about calculating usable addresses. I believe you subtract 2 for the network and broadcast addresses.
upvoted 0 times
...
An
4 months ago
I think I remember that a /23 subnet has 9 bits for hosts, which might mean 2^9 addresses, but I’m not sure how many are usable.
upvoted 0 times
...
Paz
4 months ago
The key is understanding how the /23 subnet mask works. It gives you 9 host bits, so the total number of assignable addresses is 2^9 - 2 = 510.
upvoted 0 times
...
Reena
4 months ago
I'm a bit confused on how to approach this. Let me re-read the question and think it through step-by-step.
upvoted 0 times
...
Slyvia
4 months ago
Wait, isn't it 2^8 - 2 = 254 addresses? The /23 subnet only uses 23 bits, so the last 8 bits are for the hosts.
upvoted 0 times
...
Marica
5 months ago
Okay, I've got this. The /23 subnet mask means 23 bits for the network and 9 bits for the host. That's 2^9 - 2 = 510 assignable addresses.
upvoted 0 times
...
Portia
5 months ago
Hmm, this looks like a tricky IP addressing question. I'll need to think through the subnet mask and network range carefully.
upvoted 0 times
...
Christiane
6 months ago
As a network admin, I can tell you that 10.0.128.0/23 is the way to go. D is the correct choice, hands down.
upvoted 0 times
...
Karma
6 months ago
Wait, is this a trick question? What if the answer is actually 42? *laughs* Nah, I'm sticking with D.
upvoted 0 times
Donte
5 months ago
I'm going with B) 254.
upvoted 0 times
...
Frank
5 months ago
I think the answer is A) 4094.
upvoted 0 times
...
...
Alise
6 months ago
I'm torn between B and C, but I'll go with C. Gotta love those subnets!
upvoted 0 times
Bulah
5 months ago
User 2: I'm torn between B and C, but I'll go with C. Gotta love those subnets!
upvoted 0 times
...
Valentin
5 months ago
User 1: I think the answer is B) 254.
upvoted 0 times
...
...
Fallon
7 months ago
I agree with Hillary, the correct answer is C) 510.
upvoted 0 times
...
German
7 months ago
Definitely D. 512 IP addresses, easy peasy!
upvoted 0 times
Matilda
5 months ago
No, it's actually D) 512
upvoted 0 times
...
Marsha
5 months ago
Actually, it is D) 512 IP addresses. You were right!
upvoted 0 times
...
Andrew
5 months ago
No way, it's definitely D) 512 IP addresses.
upvoted 0 times
...
Anika
6 months ago
I think it's A) 4094
upvoted 0 times
...
Norah
7 months ago
I think it's actually A) 4094 IP addresses.
upvoted 0 times
...
...
Hillary
7 months ago
But the subnet mask /23 gives us 2^9 - 2 = 510 usable addresses.
upvoted 0 times
...
Ettie
7 months ago
I believe it's C) 510.
upvoted 0 times
...
Hillary
7 months ago
I think the answer is A) 4094.
upvoted 0 times
...
Shalon
7 months ago
Hmm, let's see... 10.0.128.0/23 covers a range of 510 IP addresses? I think I'm going with C on this one.
upvoted 0 times
Malcom
6 months ago
Yes, I agree. C) 510 seems to be the correct answer.
upvoted 0 times
...
Fernanda
7 months ago
I think you're right, it should be 510 IP addresses.
upvoted 0 times
...
...

Save Cancel