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# You need to subnet a network that has five subnets,each with at least 16 hosts.which classful subnet mask would you use?

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255.255.255.224

224 = 11100000

This will allow 8 subnets with 30 useable hosts in each.

NOTE: 255.255.255.240 WILL NOT WORK. It will have 16 IPs in each subnet, but remember you only have 14 useable. One will be the network number and the other will be the broadcast IP.

Posted on Dec 20, 2008

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Posted on Jan 02, 2017

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## Related Questions:

### If i have a point-to-point connection that needs exactly if i have a point-to-point connection that needs exactly 2 usable host addresses. What class c subnet mask should i use?

11111111, 11111111, 11111111 11111100
11111100 = 0x1 + 0x2 + 1x4 + 1x8 + 1x16 + 1x32 + 1x64 + 1x128
0+0+4+8+16+32+64+128=252
you may notice that there are three possible combinations available so you would think the hosts would be three but when all the bits are reserved 11111111 it is used for the host address as well as 0.0.0.0 or 00000000,00000000,00000000,00000000 as it is used for network address what i mean is say network portion was
in decimal 192.168.0.0 the next network address is 192.168.0.4
so usable ip 192.168.0.1 & 192.168.0.2
and next usable ip 192.168.0.5 & 192.168.0.6
255,255,255,252
http://www.weird.com/~woods/classc.html

https://www.aelius.com/njh/subnet_sheet.html

Apr 13, 2016 | Computers & Internet

Tip

In networking the subnet mask is used with IP address to get the Network ID. The Network ID is used to identify that the particular IP address belongs to which network. To get the network ID the Subnet Mask is AND ed with the IP address in binary format.

Example:-

IPv4 address contains 4 fields and each field is 8bit

Binary

192 -> 11000000

168 -> 10101000

10 -> 00001010

2 -> 00000010

255 -> 11111111

Logical AND (formula)

* 0 AND 0 = 0
* 0 AND 1 = 0
* 1 AND 0 = 0
* 1 AND 1 = 1

192.168.10.2 ------> 11000000.10101000.00001010.00000010

255.255.255.0 ------> 11111111.11111111.11111111.11111111
-----------------------------------------------------------------------------------------------------------
11000000.10101000.00001010.00000000 (AND ing)
-----------------------------------------------------------------------------------------------------------

Hence after AND ing we get the network ID that is 192.168.10.0, so the IP address 192.168.10.2 belongs to this network.

Enjoy networking.

on Jul 08, 2010 | Computers & Internet

Tip

A subnet mask is a 32-bit binary number, very similar to an IP address. And like an IP address, the subnet mask is usually expressed as a set of four octets written in decimal form, with each octet separated by a period.

The subnet mask is used by routers and switches to determine which part of a computer or other device's IP address is the network identifier, and which part is the host identifier. There are three default subnet masks, one for each of the IP classes A, B, or C. The default subnet masks are:

Class A = 255.0.0.0
Class B = 255.255.0.0
Class C = 255.255.255.0

To determine the default subnet mask for your network, all you need to do is see which class your network falls into. A network's class is assigned based on the first octet (the set of digits before the first period) of the IP address. For example, to find out which class the network 123.22.8.0 belongs to, you would see where "123" fits into the following table:

First Octet: Class:
1-126 = Class A
128-191 = Class B
192-223 = Class C

So for the example above, 123.22.8.0 is a Class A network, which means it would have a default subnet mask of 255.0.0.0.

Most home and office networks will be Class C networks, so your default subnet mask will typically be (you guessed it) 255.255.255.0. Not all networks use the default subnets, but for those that do, figuring it out is easy once you know which class your network fits into.

on Jun 23, 2010 | Computers & Internet

### How do i establish a subnet with a A address

The subnet is determined by the subnet mask. Class A addresses are contained in the following range: 0.0.0.0 - 127.255.255.255. The most common use of a class A address is 10.0.0.0

In class A networking you may use a subnet mask from 255.0.0.0 all the way to 255.255.255.255

The subnet would work as the following example:

The first number in the above example would determine our subnet. So if you have 2 devices and you would want to put them in a different subnets you would want the first octet (octet is each number seperated by periods) to be a different number.

Network 1: 10.x.x.x
Network 2: 11.x.x.x

Unless these devices use a router to communicate they would not "talk" properly. Thus giving you 2 different subnets.

Oct 24, 2013 | Computers & Internet

### Hi! i tried to configure network printer but couldn't succeed.please suggest with process.

assign a static IP to your printer
After:
Check the following
Printer Is Turn On
Is connected to Switch or router
When ask Local priinter or Network printer
choose Network printer
The Software autocmatically detect the Printer with the IP asigned
continue the steps

Sep 20, 2011 | HP LaserJet P2015dn Printer

### Model ncomputing L230 host un reachbull eror coming not conneceting. please immediately solve the problem and give us reply immediately mob:9963266130

The L230 does not have a full IP v4 stack in it so having it connect across Class A subnets can be a challenge. Try to get the Server and the hosts on the same subnet.

Jul 16, 2011 | NComputing L230 Network Terminal

### When i get connected to d-link des 1008d switch port the computer will get automatically configured 255.255.0.0 to subnet mask therefore i have class c ip address and i dont have internet connection...

just do the following connections
1. connect a utp cable from modem/router to dlink switch.
2. connect a utp cable from switch to ur pc
Assign ur pc manually with following configuration

ip: 192.168.100.5
subnet: 255.255.255.0
gateway: 192.168.100.1

and your router with ip: 192.168.100.1 And enable pppoe in ur router.

Thats it you are connected to internet. No need to enable ics etc.

Jul 05, 2010 | D-Link DES-1008D 8-Port Ethernet Switch...

### How do i establish a subnet with a B address

Subnet mask for 86 PCs is more than 64 and less than 128. it means that subnet mask is 255.255.255.128
You can have PC IP address in range 172.31.0.129 - 172.31.0.254

Apr 21, 2010 | Computers & Internet

### WHAT SHOULD BE THE IP ADDRESS OF THE COMPUTER (10-15 HOST)?

You can use class C IP address:

Computer 1 -> 192.168.1.1
Computer 2 -> 192.168.1.2

..........

Computer 15 -> 192.168.1.15

Choose the subnet mask as 255.255.255.0 for all

Mar 10, 2010 | Acer Computers & Internet

### Billionton USB : Class 1 USB Bluetooth adapter

before you try any step i tell you please disable your antivirus and firewall.
well!! I have an answer for you.your comp is loosing the IP address. goto start - programmes - accessories - dos prompt. type ipconfig.you`ll get ip address,subnet mask,default gateway.copy it. goto network and sharing center in vista and network connection under control panel in XP,IN Vista,click on view status,goto properties and double click on internet protocol(tcp/ip) or IPv4In XP,right click wireless network connection and goto properties and double click on internet protocol(tcp/ip).type in the IP address,subnet mask,default gateway.in DNS server address type the default gateway in primary DNS and in secondary 4.2.2.2. your connection won`t drop after this.

Jul 01, 2009 | Billionton Long Range Bluetooth USB...

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