IPv4 Addressing (obj 1.7) Flashcards
(26 cards)
What is the most common type of IP addressing used in networks?
Internet Protocol version 4 (IPv4) Addressing
IPv4 is widely used for assigning addresses in various types of networks.
How is an IPv4 address represented?
Decimal representations of a 32 bit binary number
IPv4 addresses are commonly written in a format called Dotted-decimal Notation.
What is Dotted-decimal Notation?
A series of four decimal numbers separated by dots
Each of the four numbers represents an octet.
What are octets in the context of an IPv4 address?
Refers to the four decimal numbers, individually
Each octet represents 8 bits of the binary number.
How many bits does an IPv4 address consist of?
32 bits
This is divided into four octets.
What is the range of decimal numbers for each octet in an IPv4 address?
0 to 255
Each octet can take any value within this range.
What determines the network and host portion of an IPv4 address?
Subnet mask
The subnet mask indicates which part of the address is the network and which part is the host.
What does a subnet mask consist of?
Continuous strings of ones (1) and zeros (0)
This binary representation helps to distinguish the network and host portions.
What defines the network portion in a subnet mask?
1
The ‘1’s in the subnet mask indicate the network portion.
What defines the host portion in a subnet mask?
0
The ‘0’s in the subnet mask indicate the host portion.
How are IP addresses classified?
Depending on the first octet in their address
This classification helps in organizing IP addresses into different categories.
What is the range of the first octet for Class A IP addresses?
1 to 127
Class A addresses are designed for very large networks.
What is the default subnet mask for Class A IP addresses?
255.0.0.0
This subnet mask allows for a large number of hosts.
What is the range of the first octet for Class B IP addresses?
128 to 191
Class B addresses are suitable for medium-sized networks.
What is the default subnet mask for Class B IP addresses?
255.255.0.0
This allows for a moderate number of hosts.
What is the range of the first octet for Class C IP addresses?
192 to 223
Class C addresses are intended for smaller networks.
What is the default subnet mask for Class C IP addresses?
255.255.255.0
This subnet mask supports a limited number of hosts.
What is the range of the first octet for Class D IP addresses?
224 to 239
Class D addresses are reserved for multicast routing.
What is the purpose of a multicast address?
A logical identifier for a group of hosts
This allows for efficient data transmission to multiple recipients.
What is the range of the first octet for Class E IP addresses?
240 to 255
Class E addresses are reserved for experimental use.
What is subnetting?
The process of dividing a larger network into smaller subnetworks
This helps improve network management and efficiency.
What is a Classful Subnet Mask?
Uses default masks associated with specific address classes
This type of subnet mask is based on the class of the IP address.
What is a Classless Subnet Mask?
Uses any subnet mask that is not the default for a specific address class
This allows for more flexible subnetting.
What does Classless Inter-Domain Routing (CIDR) allow?
Borrowing bits from the host portion to expand the network portion
This enables the creation of smaller subnetworks.
