I have to setup a small network tomorrow in school and need help with the types of class (a,b,c) and subnettin

Question

I have to connect two computers, no big deal. Small network using straight through twisted pair cabling. The teacher is going to randomly assign us to set it up to either class A, B, or C. What is the difference between them (the IP addresses). and secondly, how exactly do you set the ip address, we have to do that through the network settings, not the ipconfig command? The subnetting, I guess is just set to 255.0.0.1, but if she assigns me class C, would the subnet be 255.255.255.1?

I REALLY APPRECIATE YOUR TIME and ANSWERS!

Answer 1

Hello,

Answer for your first question is as you mentioned there are three class of ip address Class A,B & C. Class A ip address ranges from
in your case private ip 10.0.0.0 to 10.255.255.254 with subnet mask 255.0.0.0. and class B 172.16.0.0 to 172.16.255.254 with subnet mask 255.255.0.0 and class C 192.168.0.0 to 192.168.255.254 with subnet mask 255.255.255.0

Answer for your second question would be if you are using windows machine Right click on my networkplaces select properties- select Local Area Connection Right Click on Local Area Network select properties and select Internet Protocol (TCP/IP) select properties here you can give your ip address and subnet mask

Answer for your third question would be as i mentioned above
for class A 255.0.0.0 class B 255.255.0.0 and class C 255.255.255.0

Answer 2

Of the 1.2.3.4, A is 1, B is 2, C is 3 & D is you.

I'll use 10 as sample IP addresses.

A class would be 10.*.*.*
B class would be 10.10.*.*
C class would be 10.10.10.*
(Each group is called an octet as I recall.)

A class gives you 252*252*252 network addresses*
B class gives you 252*252 network addresses*
C class gives you 252 network addresses*

A class addresses are given to like ibm.com, us.gov, etc.
Last I looked, only about 1/2 were assigned.
B class - I say like McDonald's, UPS, mot.com (Motorola)
C class - Given to smaller fish. If 252 not enough, will be assigned multiple C class addresses.

Subnet for a class C would be 255.255.255.0
The IP addresses for your computer would be 10.10.10.1*
The IP addresses for the other computer would be 10.10.10.2*

Broadcast would probably be the same (usually the broadcast mask is set from the the subnet mask these days) and you don't have to worry about it).
Broadcast tell you where to send ARPs and such to.
You could have a netmask 255.255.255.0 and a broadcast of 0.0.10.10 (something like that, haven't messed with it in a while).


255 is typical, but before NAT and DHCP, others were used
It's a bit-mask expressed as decimal. It's really binary 11111111.

You could set 1 (256) 11 (128) 111 (64) 1111 (32),
11111 (16), 111111 (8), 1111111 (4), 11111111(2).
Well crap - I put that backwards!

11111111 = 256
01111111 = 128
00111111 = 64
00011111 = 32
00001111 = 16
00000111 = 8
00000011 = 4
00000001 = 2
00000000 = 1 (no mask)

You could have a subnet mask of 255.255.255.64 (converted from binary as shown above) and it would 64 address for branch office. This way, you could assign the valid IP addresses for it to 10.10.10.1-63 and save the rest of your class C address for other sites.


*255, 127, & 0 are special.
0 is a broadcast address, 127 is local loopback, 255 is subnet. mask. Often 254 is used for routers - depends on the company network policy.

Answer 3

Ipconfig is for checking the Configuration of your NIC. The subnet mask for a Class A address is 255.0.0.0 not 255.0.0.1. The subnet address for a class C address is 255.255.255.0. If your PC's are running Windows XP read up about APIPA and blow your teachers mind just for fun.

Answer 4

This a simple network calculator

http://www.subnetmask.info/

Here is the whole explanation

http://www.learntosubnet.com/

Default Class A mask 255.0.0.0
Default Class B Mask 255.255.0.0
Default Class C Mask 255.255.255.0

Answer 5

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Answer 6

Agreed with the previous responder.
Only modification I would like to make is to use 255.255.255.252 instead. The previous answer is in fact correct, but isn't efficient if its for a networking class.