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 are the 4 parts of an IP address?
IP Address Components
- Address Class. Early in the development of IP, the IANA (Internet Assigned Numbers Authority) designated five classes of IP address: A, B, C, D, and E.
- Default Subnet Mask.
- The Network Field.
- The Host Field.
- Non-default Masks.
- The Subnet Field.
What defines a subnet mask?
A subnet mask is a 32-bit number used to differentiate the network component of an IP address by dividing the IP address into a network address and host address. It does so with bit arithmetic whereby a network address is bit multiplied by the subnet mask reveal the underlying subnetwork.
What are the three parts of an IP address?
IP addresses are hierarchical, and usually they are divided into following three parts:
- Network part: • Network part is the unique address for the host’s network on internet.
- Subnet part(optional): •
- Host part: •
How many types of subnets are there?
There are two types of subnetting: static and variable length. Variable length is the more flexible of the two. Which type of subnetting is available depends upon the routing protocol being used; native IP routing supports only static subnetting, as does the widely used RIP protocol.
What is subnet mask of Class B?
Class B networks use a default subnet mask of 255.255. 0.0 and have 128-191 as their first octet. The address 172.16. 52.63 is a class B address.
What are Sections A and B of the IP address?
Section A is the network portion, and Section B is the host portion. The IP address range of 172.16.
How subnet mask is calculated from the IP address?
IPv4 addresses are 32 bits made up of four octets of 8 bits each. To calculate the subnet mask, convert an IP address to binary, perform the calculation and then convert back to the IPv4 decimal number representation known as a dotted quad. The same subnetting procedure works for IPv6 addresses.
What is the difference between a subnet and a subnet mask?
A subnet is a range of addresses which are valid hosts on the same network. Subnet and network range are synonyms. A subnet mask is an obsolete term for “network mask”. “subnet” no longer exists. It is a leftover from classful days. “network” can be used in place of “subnet” for almost all uses (if not all).
How do you find your custom subnet mask?
How to Find Your Subnet Mask Method 1 of 4: Windows Instructions. Open Command Prompt. Method 2 of 4: Mac Instructions. Click on the “System Preferences” icon on your dock. Method 3 of 4: Linux Instructions. Open a command line. Method 4 of 4: Setting Up a TV or Other Device. Use the same subnet mark as a computer.
Is a subnet mask the same as netmask?
The “Netmask”, “subnet mask”, or simply “mask” are all the same thing: A mask that tells software which IPs belong to that network an which don’t.
How to determine a custom subnet mask?
Determining The Custom Subnet Mask Using Subnetting Tables. Now, what could be easier than that? Well, you could simply refer to the subnetting summary tables. Find the table for the appropriate class, and then find the row that you selected in the previous step that matches the number of subnet ID bits you want to use. You can see the matching subnet mask right there. (Hey, it’s good to know how to do it yourself! You may not always have tables to refer to!)