How many octets does a subnet mask have quizlet?
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How many octets does a subnet mask have quizlet?
Subnet IDs are calculated via what’s known as a subnet mask. Just like an IP address, subnet masks are 32-bit numbers that are normally written now as four octets in decimal.
How many octets does an IP address have?
4 octets
An IP address is, as such, generally shown as 4 octets of numbers from 0-255 represented in decimal form instead of binary form.
How many bits are in a subnet mask?
32-bit
A subnet mask is a 32-bit number created by setting host bits to all 0s and setting network bits to all 1s. In this way, the subnet mask separates the IP address into the network and host addresses.
Is subnet mask always 255?
All subnet masks must end in 0, 128, 192, 224, 240, 248, 252, 254, or 255—the values of each bit position as they are “turned on” left to right in any octet.
How many octets is the network portion of a Class C address?
three octets
Class C — The first three octets denote the network address, and the last octet is the host portion. The first octet range of 192 to 223 is a Class C address. Class D — Used for multicast. Multicast IP addresses have their first octets in the range 224 to 239.
Which of the following represents the octets of a Class C subnet mask?
A Class A address uses only the first octet to represent the network portion, a Class B address uses two octets, and a Class C address uses three octets….Table 3.3. Default Subnet Masks Associated with IP Address Classes.
| Address Class | Default Subnet Mask |
|---|---|
| A | 255.0.0.0 |
| B | 255.255.0.0 |
| C | 255.255.255.0 |
How many octets are there?
The octet is a unit of digital information in computing and telecommunications that consists of eight bits….Octet (computing)
| octet | |
|---|---|
| In primary units of information | 1 o = 8 bits |
How many octets are there in IPv6 address?
16 8
IPv6 addresses are represented differently because they are much longer than IPv4 addresses. The IPv6 address size is 128-bits long, or 16 8-bit octets. This represents an astronomical increase in address size from 4,294,967,296 seen in IPv4 to over 340 trillion, trillion, trillion.
How is netmask bit calculated?
Calculate the subnet bits by looking at the final 8-bit binary word of the 32-bit binary subnet mask. If the final 8-bit binary word is 10000000, then there is one subnet bit and therefore 25 mask bits. If it is 11000000, then there are two subnet bits and therefore 26 mask bits.
How do I calculate subnet mask?
The number of subnets is found by counting the number of bits by which the initial mask was extended, also known as the subnet bits. Our initial address allocation was 192.168. 0.0 with a mask of 255.255. 0.0.
What does a subnet mask of 255.255 255.0 mean?
A class C network would have a subnet mask of 255.255. 255.0 which means that 24 bits are used for the network. In CIDR notation this is designated by a /24 following the IP address.
What is subnet size?
A subnetwork or subnet is a logical subdivision of an IP network. 100.0/24 is the prefix of the Internet Protocol version 4 network starting at the given address, having 24 bits allocated for the network prefix, and the remaining 8 bits reserved for host addressing. Addresses in the range 198.51.