Quick Answer: What Is Subnet Mask In Simple Words?

What is IP address and subnet mask?

A subnet mask is a 32- or 128-bit number that segments an existing IP address in a TCP/IP network.

Subnet mask divides the IP address into a network address and host address, hence to identify which part of IP address is reserved for the network and which part is available for host use..

What does IP address 0.0 0.0 mean?

From Wikipedia, the free encyclopedia. In the Internet Protocol Version 4, the address 0.0. 0.0 is a non-routable meta-address used to designate an invalid, unknown or non-applicable target. This address is assigned specific meanings in a number of contexts, such as on clients or on servers.

How many subnets are in a 24?

Converting /29 gives 255.255. 255.248. This shows that the fourth octet is the interesting octet. Deducting 248 from 256 gives us 8 so the subnets are 0, 8, 16, 24, 32, 40, 48……2-3 Subnetting.Dotted Decimal ValueCIDR notation255.255.255.0/24255.255.255.128/25255.255.255.192/26255.255.255.224/2719 more rows•Dec 12, 2013

What is the purpose of 127.0 0.0 IP address?

The IP address range 127.0. 0.0 – 127.255. 255.255 is reserved for loopback, i.e. a Host’s self-address, also known as localhost address. This loopback IP address is managed entirely by and within the operating system.

What does the mask 255.255 0.0 tell you?

A subnet mask of 255.255. 255.0 would give you lots of networks (2 16) and 254 hosts. A subnet of 255.255. 0.0 would give you lots of hosts (approx 216) and 256 networks.

What is a 16 subnet?

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.

How do you find the subnet mask?

In the Windows search fields, type cmd, to open command prompt.Press Enter.Type ipconfig/all press Enter.Find your network settings.Your PC’s IP address and your network Subnet Mask and Gateway will be listed.

What is the difference between CIDR and subnet mask?

The term Subnetting is generally used when you use it at the organizational level. CIDR is generally used when you it at the ISP level or higher. In any event, it is only important to know that both terms really refer to the same concept. On local area networks, we use the concept of a subnet mask.

What is a good subnet mask?

This is a simplistic explanation, good enough for handling a subnet like 192.168. 0.1 with a mask short hand value of /24 thru /32 (long hand 255.255. 255.0 thru 255). The subnet calculator can determine the range of the clients local network by its IP address and network mask.

What is a 255.255 254.0 subnet?

255.255.254.0 = 23 bits mask = 510 hosts (512 -2 ) 255.255.252.0 = 22 bits mask = 1022 hosts (1024 -2 ) 255.255.248.0 = 21 bits mask = 2046 hosts (2048 -2) You always multiply by 2 or divide by 2..and remove 2 hosts (broadcast and network)

What is IP and its types?

An internet protocol (IP) address allows computers to send and receive information. There are four types of IP addresses: public, private, static, and dynamic. An IP address allows information to be sent and received by the correct parties, which means they can also be used to track down a user’s physical location.

When would you use a 32 subnet mask?

Generally speaking, /32 means that the network has only a single IPv4 address and all traffic will go directly between the device with that IPv4 address and the default gateway. The device would not be able to communicate with other devices on the network.

What are the 4 parts of an IP address?

IPv4 addresses are usually represented in dot-decimal notation, consisting of four decimal numbers, each ranging from 0 to 255, separated by dots, e.g., 172.16. 254.1. Each part represents a group of 8 bits (an octet) of the address.

What is CIDR subnet mask?

CIDR notation (Classless Inter-Domain Routing) is an alternate method of representing a subnet mask. It is simply a count of the number of network bits (bits that are set to 1) in the subnet mask. Subnet mask bits are explained in a following section.

What is a 255.255 subnet?

A subnet mask of 255.255. 255.0 allows for close to 256 unique hosts within the network (since not all 256 IP addresses can be used). … This is the default subnet mask used by Class B networks and provides up to 65,536 IP addresses (256 x 256). The largest Class A networks use a subnet mask of 255.0.

What is Subnet Mask example?

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.

What’s the point of a subnet mask?

The purpose of the subnet mask is to define the IP broadcast domain. A packet sent to the broadcast address can potentially be received by all hosts on the subnet. When sending to another host on the same subnet, the packet can be sent to the destination directly.

Is subnet mask always 255?

hmm Almost every small network uses a subnet mask of 255.255. 255.0 and this allows for 255 IP addresses on that network. … A subnet mask is a binary mask made up of all 1, contiguous.

What is a 192.168 IP address?

Using 192.168. 192.168. 0.0 is the beginning of the private IP address range that includes all IP addresses through 192.168. … One common IP address assigned to home routers is 192.168. 1.1. This IP address is used because the router is on the 192.168.

What is subnet mask and why it is 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.