Linked Questions
214 questions linked to/from How do you calculate the prefix, network, subnet, and host numbers?
8
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1
answer
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What are the differences between network, host, loopback and broadcast address? [duplicate]
I have one question about IP addresses. If I have address 172.18.230.127./29 how should I know what type of address is this one. It could be:
Network address,
Host address,
Loopback address
...
- 91
1
vote
1
answer
11k
views
Maximum number of Subnets [duplicate]
If I have been assigned the address 164.12.130.0/23 in a network block. What is the maximum number of subnets that can be defined?
What will be the IP addresses of those subnets.
This is not a Home ...
2
votes
1
answer
10k
views
Start with 192.168.67.0/24 and split it into 4 equal networks, what is the third usable IP address of the 3rd subnet? how do you solve this? [duplicate]
Start with 192.168.67.0/24 and split it into 4 equal networks, what is the third usable IP address of the 3rd subnet? how do you solve this?
- 33
3
votes
3
answers
20k
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how to find a minimum number of host bits needed? [duplicate]
let's say I have 200.35.1.0/24 network block. I need to address 20 hosts on each subnet. How do I specify the minimum number of host bits that are required?
0
votes
1
answer
2k
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Which CIDR block contains the most IP addresses, 192.168.0.0/16 or 169.254.0.0/16? [duplicate]
I want to say 192.168.0.0/16 contains more IP addresses, 86 more to be precise? I've simply subtracted 168 from 254.
Can anyone clarify how you can determine which has more IP addresses?
Thanks
- 179
0
votes
1
answer
6k
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Why do I get 8 addresses and 6 hosts on a /29 subnet? [duplicate]
I am moving my company to a leased line and in their brochure they have mentioned that I will be getting a /29 IPs. When I wanted to lookup how many IP addresses that will be, this page http://www....
- 153
0
votes
1
answer
21k
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How to find number of borrowed bits in subnetting [duplicate]
I am an Electrical Engineer learning about computer Networks, So this question might be childish and easy for most of you. Please answer it briefly.
I am performing subnetting where I have this ...
4
votes
4
answers
765
views
Which ranges of IPv4 addresses cannot be expressed in prefix notation? [duplicate]
I was trying to do an exercise where we have a range of IPv4 addresses and we need to convert it both to "prefix notation", e.g. a.b.c.d/x, and to "address/mask".
Now, apparently, the following ...
user16355
3
votes
2
answers
3k
views
Why largest subnets should be assigned IPs first? [duplicate]
Is there any particular reason as of why we should assign IP addresses to the largest subnet first? Could anyone give a simple example of why this is the better option?
Let's say I have two subnets: ...
- 173
2
votes
1
answer
4k
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What's the difference between host and network address? [duplicate]
Often in the interviews there is a question 'how many hosts this network can have and how many subnetworks?'.
Let's say we have /30 network. It has 4 addresses total, minus it's own network address ...
- 125
2
votes
2
answers
3k
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How to choose IP address? [duplicate]
I have 2 sensors with the following IP addresses:
Sensor A
IP: 192.168.0.80
Sensor B
IP: 192.168.1.201
I am able to connect them to my laptop separately using 192.168.0.100/255.255.255.0 for Sensor ...
0
votes
1
answer
11k
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How to find the first and last address in the FIRST AND LAST SUBNET [duplicate]
So there's a problem that literally stress me out every time I look at it. It's like I almost understand it until I get to knowing how to find the first and last host in the LAST address (last subnet)....
- 1
0
votes
1
answer
11k
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How to calculate random subnet first/last address [duplicate]
Lets say I have to create 256 subnets (it could be any number), how would I find the first and last (network/broadcast addresses) for a randomly chosen subnet? For instance, subnet 139.
I'll give an ...
- 3
0
votes
2
answers
2k
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What are the subnet masks for the following slash address blocks? [duplicate]
/8
/15
/29
What are the subnet masks for the following slash address blocks?
Can any one explain why?
- 13
0
votes
1
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How to assign 2000 addresses starting from 198.16.16.0? [duplicate]
This problem comes from Tannanebaum's CN book and the full description of it is as follows:
A large number of consecutive IP addresses are available starting at 198.16.0.0. Suppose that four ...
