Question: Why Is Subnet Mask Used?

What does it mean 192.168 0.0 24?

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192.168.0.0 Refers to the IP adress /24 refers to the subnet.

/ 24 subnet is 255.255.255.0.

192.168.0.0/24 is common for home networks..

How do I assign a subnet mask?

StepsTo specify a subnet mask for an interface, enter the following command: ifconfig interface_name netmask mask. … To change the subnet mask for an interface that has been configured with a primary and an alias address, enter the following command for each IP address: ifconfig interface_name IP address netmask mask.

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.

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 3 classes of subnet mask?

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

What is the purpose of a subnet mask in an IP address and mask combination?

What is the purpose of a subnet mask in an IP address and mask combination? Explanation: The subnet mask depicts the portion of the IP address that indicates the network from the portion of the address that indicates the host address on the network.

Is my IP public or private?

Difference between Private and Public IP address:PRIVATE IP ADDRESSPUBLIC IP ADDRESSIt is used to communicate within the network.It is used to communicate outside the network.Private IP addresses of the systems connected in a network differ in a uniform manner.Public IP may differ in uniform or non-uniform manner.8 more rows•Jul 30, 2019

Why is 192.168 always used?

Long story short, we are using 192.168. X.X IP addresses because this is best practice. The IETF has created three IP ranges for private networks, with Class C being the smallest and easiest to control and maintain. This is why most routers use exactly this IP range.

What exactly is a subnet mask?

A subnet mask is a number that defines a range of IP addresses available within a network. A single subnet mask limits the number of valid IPs for a specific network. Multiple subnet masks can organize a single network into smaller networks (called subnetworks or subnets).

What is difference between subnet and subnet mask?

A subnet denotes a range of addresses that can be allocated to hosts, such as 192.168. … The subnet mask is the classical way of representing which bits are part of the network portion of the address vs. the host bits of the address. The subnet mask for a /24 network is 255.255.

What is Subnet Mask example?

Subnet masks are also expressed in dot-decimal notation like an address. 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 do I know my 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 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.

Why is subnet mask needed?

Also to be clear the purpose of the subnet mask is to determine which hosts are on the local network and which are outside of the network. Hosts can talk directly to hosts on the same network, but they need to communicate with a router to talk to hosts on external networks.

What is a 192.168 IP address?

192.168. 1.1 is a common factory IP address for a consumer-grade router. If the router is used for connecting to the Internet then all computers and devices which access the Internet through it will use this address as their default gateway.