What Are The Valid Subnets?

How do you know if two devices are on the same network?

How to Determine if 2 IPs are on the Same SubnetObtain your IP address and subnet mask number.

Convert both numbers to binary.

Compare the two binary numbers by columns.

Obtain the second IP and subnet mask numbers.Convert these to binary.Perform the “AND” comparison with the second pair of numbers.Compare the two results of the AND operations..

How many 20 subnets are in a 16?

Network BitsSubnet MaskNumber of Subnets/17255.255.128.02 (0)/18255.255.192.04 (2)/19255.255.224.08 (6)/20255.255.240.016 (14)11 more rows•Aug 16, 2003

How do you know if a subnet is valid?

Total number of subnets: Using the subnet mask 255.255. 255.248, number value 248 (11111000) indicates that 5 bits are used to identify the subnet. To find the total number of subnets available simply raise 2 to the power of 5 (2^5) and you will find that the result is 32 subnets.

What is 16 subnet mask?

The last three octets of a Class A subnet mask are used to address hosts on a LAN; the 24 bits you can manipulate however you wish. … It saves you from typing, or pronouncing, the whole mask. For example, /8 means 255.0. 0.0, /16 is 255.255. 0.0, and /24 is 255.255.

What is the difference between subnet and subnet mask?

Address – The unique number ID assigned to one host or interface in a network. Subnet – A portion of a network that shares a particular subnet address. Subnet mask – A 32-bit combination used to describe which portion of an address refers to the subnet and which part refers to the host.

Is subnet mask always the same?

Subnet masks always work from left to right. Devices are said to be within the same subnet if their IP Address starts with the same digits, but ends with a different set of digits. … If the subnet mask is 255.255. 255.0, then the first three octets of all devices must be the same.

Why is subnet mask used?

A subnet mask is used to divide an IP address into two parts. One part identifies the host (computer), the other part identifies the network to which it belongs. To better understand how IP addresses and subnet masks work, look at an IP (Internet Protocol) address and see how it is organized.

What are the 3 classes of subnet mask?

So, the three default subnet masks are 255.0. 0.0 for Class A, 255.255. 0.0 for class B, and 255.255.

Can you ping different subnets?

If there is no configured default route/gateway, then a ping will fail with a “no route to host” error. In a little more detail, PC1 will compare the destination address to it’s local subnet, which is calculated from the IP address and subnet mask. … If there is no route, it will not send the traffic and return an error.

Can a router have 2 IP addresses?

Routers are special because they have two IP addresses. An IP address is assigned to each of the router’s two “interfaces”. … This is the side of the router that faces the Internet and has a public IP address. The second router interface is called the LAN (Local Area Network) interface.

How do I ping my router over the Internet?

To send the router a friendly ping, follow these steps:From the Start menu, choose All Programs→Accessories→Command Prompt. … To discover the router’s address, type ipconfig and press Enter. … Type the command ping, a space, and then the IP address of the router, or default gateway; press Enter.More items…

How do I ping devices on my network?

In Windows, hit Windows+R. In the Run window, type “cmd” into the search box, and then hit Enter. At the prompt, type “ping” along with the URL or IP address you want to ping, and then hit Enter.

How do I ping another computer in Linux?

Click or double-click the Terminal app icon—which resembles a black box with a white “>_” in it—or press Ctrl + Alt + T at the same time. Type in the “ping” command. Type in ping followed by the web address or IP address of the website you want to ping.

What is a 255.255 254.0 subnet?

It means that you decided to use the last 8 bits of the address for your devices. 8 binary bits gives you 256 decimal, so you can have 256 addresses for the devices on your network ranging from 192.168. … You change the network mask to 255.255. 254.0. Now you have 9 bits for your devices (254 is 11111110).

What is a valid subnet mask?

Most home networks use the default subnet mask of 255.255. 255.0. However, an office network may be configured with a different subnet mask such as 255.255. 255.192, which limits the number of IP addresses to 64.

What device can connect subnets?

Routers use IP address to locate and forward data between devices on different networks. Subnetworks, or subnets, are created by taking a single private address range and dividing it into multiple separate networks using a subnet mask.

Which one is an example of subnet mask?

For example, 255.255. 255.0 is the subnet mask for the prefix 198.51. 100.0/24. Traffic is exchanged between subnetworks through routers when the routing prefixes of the source address and the destination address differ.

How many subnets are in a 16?

Class ANetwork BitsSubnet MaskNumber of Subnets/16255.255.0.0256 (254)/17255.255.128.0512 (510)/18255.255.192.01024 (1022)/19255.255.224.02048 (2046)19 more rows