Questions and answers

How does a subnet mask work?

How does a subnet mask work?

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 address and see how it’s organized.

How do I find my subnet mask?

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

How is subnet addressing done?

To make subnets possible, the local address part of an Internet address is divided into a subnet number and a host number. The first 8 bits contain the network address (always beginning with a zero). The remaining 24 bits contain the local host address.

How do IP address and subnet mask work?

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 24 mean after IP?

2.0/24”, the number “24” refers to how many bits are contained in the network. From this, the number of bits left for address space can be calculated. As all IPv4 networks have 32 bits, and each “section” of the address denoted by the decimal points contains eight bits, “192.0.

How many IPS does the subnet of 255.255 255.0 have?

Subnet Cheat Sheet – 24 Subnet Mask, 30, 26, 27, 29, and other IP Address CIDR Network References

CIDR Subnet mask # of usable IP addresses
/24 254
/23 510
/22 1,022
/21 2,046

Is subnet mask the same as subnet address?

The subnet mechanism uses a portion of the Host ID field to identify individual subnets. Figure 2, for example, shows the third group of the 172.16. 0.0 network being used as a Subnet ID. A subnet mask is used to identify the part of the address that should be used as the Subnet ID.

What is the difference between subnet mask and subnet address?

IP subnetting is the practice of dividing a network into two or smaller networks. A subnet mask is a 32 bits address used to distinguish between a network address and a host address in IP address. The subnet mask is used by the router to cover up the network address. It shows which bits are used to identify the subnet.

How do you configure an IP address subnet mask and default gateway?

Windows Me, 98, or 95

  1. Click the IP Address tab.
  2. In the IP Address field, type 192.168.
  3. In the Subnet Mask field, type 255.255.
  4. Click the Gateway tab.
  5. In the New gateway field, type the router’s IP address (the factory default is 192.168.
  6. Contact your ISP to get the necessary DNS values.
  7. Click the DNS Configuration tab.

How do you make a subnet mask?

A Subnet mask is a 32-bit number that masks an IP address, and divides the IP address into network address and host address. Subnet Mask is made by setting network bits to all “1”s and setting host bits to all “0”s. Within a given network, two host addresses are reserved for special purpose, and cannot be assigned to hosts.

How do you calculate subnet mask?

A more mathematical way to express the the subnet mask calculation is: current value = value on the left (previous value) + power of 2 of this column. It should take about 1 minute to do this when the exam starts. It will be extremely useful all through the exam to double check any IP and subnet.

What is the default subnet mask?

The subnet Masks indicate which portion of an IP address denotes the network and which portion denotes the host. The subnet mask for class C IP addresses is and is the default subnet mask for many computers and network routers.

How do you Find Your subnet mask number?

Find the subnet mask. This is located in the section titled ” Ethernet adapter Local Area Connection.”. Find the line beginning “Subnet Mask” and look across to find your subnet mask. Most subnet mask numbers begin with a string of 255s, such as