Solved Network+ Cert Test Questions concerning subnetting

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Hello,
Network ID
Subnet IP
Are they the same thing?
In my attempt to understand Network+ Subnetting Example #3
Subnet IP ------ 172.16.???.0 - 172.16.42.0
First Usable IP - 172.16.???.1 - 172.16.42.1
Last Usable IP - 172.16.???.254 - 172.16.43.254
Broadcast IP ---- 172.16.???.255 - 172.16.43.255
I have been viewing YouTube videos on Subnetting and want to clarify; Is the Network IP discussed in the YouTube video linked below the same thing as the Subnet IP discussed in ITPro Network+ Subnetting Example #3?

I found this on helpful: https://youtu.be/nFYilGQ-p-8
PS I searched the forum but my search results for "Network ID" found results but I did not find the results helpful.
Thank you for your assistance!
Matt

@Matt-Hieter said in Network+ Cert Test Questions concerning subnetting:

Hello,
Network ID
Subnet IP
Are they the same thing?
In my attempt to understand Network+ Subnetting Example #3
Subnet IP ------ 172.16.???.0 - 172.16.42.0
First Usable IP - 172.16.???.1 - 172.16.42.1
Last Usable IP - 172.16.???.254 - 172.16.43.254
Broadcast IP ---- 172.16.???.255 - 172.16.43.255
I have been viewing YouTube videos on Subnetting and want to clarify; Is the Network IP discussed in the YouTube video linked below the same thing as the Subnet IP discussed in ITPro Network+ Subnetting Example #3?

I found this on helpful: https://youtu.be/nFYilGQ-p-8
PS I searched the forum but my search results for "Network ID" found results but I did not find the results helpful.
Thank you for your assistance!
Matt

In the 3rd subnetting example, remember you have to identify the network that an address belongs. The only way to determine this is determine the Network, the First and Last IPs within that single network, and the broadcast address.

The subnet can only be determined if you know the subnet mask, this is the /23 or 255.255.252.0.

If "Network IP" means the identified network. Then that would be the same as the subnet that Don refers to. Make sure you pay attention more to concept than the terminology as well. Even though CompTIA Network + is vendor neutral, you'll see different hardware manufacturers will refer to the same concepts with different terminology.

Please feel free to post subnetting questions here too. Many of our members are good at this concept and can help you when you get stuck!

Thank you Ronnie!

Please help me with another clarification.
In Don's video and in his notes he list the Subnet as 172.16.???.000 - 172.16.42.0
Correct me if I am wrong but shouldn’t the subnet have been 255.255.252.0
If I am wrong then I do not understand the definitions of:
Subnet:
Subnet Mask:

Truly grateful,

Confused - Matt

@Matt-Hieter said in Network+ Cert Test Questions concerning subnetting:

Thank you Ronnie!

Please help me with another clarification.
In Don's video and in his notes he list the Subnet as 172.16.???.000 - 172.16.42.0
Correct me if I am wrong but shouldn’t the subnet have been 255.255.252.0
If I am wrong then I do not understand the definitions of:
Subnet:
Subnet Mask:

Truly grateful,

Confused - Matt

The subnet is 172.16.42.0 - 172.16.43.0
The subnet mask is 255.255.252.0 or /22

The subnet is the network (a logical identification of a group of networked devices) think of this as being the street like Main Street each device in that subnet will have a number like a house number on that street.

The subnet mask is how we identify which portion of the network address is the network and which portion of the network address represents the hosts.

no problem, let us know if you have any other questions.