Logical Addressing in Networking

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Questions and Answers

What happens if you do not subnet a Class A, B, or C network?

You can assign multiple IP addresses to each device.

You are limited to using only one network. (correct)

You can create unique network IDs for each node.

You can use multiple networks for different purposes.

How many subnets can be created by extending the mask of a Class C network to 255.255.255.224?

16 subnets

8 subnets (correct)

4 subnets

6 subnets

What is the maximum number of host addresses available for a subnet with the mask 255.255.255.224?

32 usable addresses out of 34 total addresses

31 usable addresses out of 32 total addresses

30 usable addresses out of 32 total addresses (correct)

16 usable addresses out of 18 total addresses

Which of the following IP addresses would be part of the first created subnet 192.168.5.0 255.255.255.224?

192.168.5.31 Signup and view all the answers

What is indicated by the 'host ID' bits in an IP address when subnetting?

They identify individual devices within the network. Signup and view all the answers

What is the range of public IP addresses for Class B?

128.0.0.0 to 191.255.0.0 Signup and view all the answers

Which of the following describes Class D IP addresses?

Allocated for internet multicasting Signup and view all the answers

What is the subnet mask for a Class C IP address?

255.255.255.0 Signup and view all the answers

How many hosts can be accommodated in a Class C network?

254 Signup and view all the answers

What is the first octet range for Class E IP addresses?

240 to 255 Signup and view all the answers

Which IP range is designated for private Class B addresses?

172.16.0.0 to 172.31.255.255 Signup and view all the answers

What is the primary use of Class A addresses?

Large scale networks with a vast number of hosts Signup and view all the answers

What does subnetting accomplish in IP networking?

Creates multiple separate networks within a single Class A, B, or C network Signup and view all the answers

What is the primary purpose of unicast addressing in networking?

To establish a one-to-one data transmission to a unique node Signup and view all the answers

Which IP address range is defined for multicast addressing?

224.0.0.0 to 239.255.255.255 Signup and view all the answers

How does anycast addressing deliver data packets on a network?

To the closest interface with the specified anycast address Signup and view all the answers

Which class of IP addresses allows for the largest number of hosts per network?

Class A Signup and view all the answers

What is the range of private IP addresses for Class A?

10.0.0.0 to 10.255.255.255 Signup and view all the answers

How many networks can Class B addresses support?

16,384 Signup and view all the answers

Which of the following best describes multicast addressing?

Transmission to multiple recipients in a group Signup and view all the answers

Study Notes

Logical Addressing

IP addresses and MAC addresses are crucial for data communication
Assume two networks with devices A, B, C in one and X, Y, Z in the other
To send data from A to Y, the IP address of Y is first determined
IP addresses are logical and may change when moving to another network
MAC addresses are physical and remain constant across networks
IP addresses are assigned by ISPs mathematically (not random)
The Internet Assigned Numbers Authority (IANA) manages IP address assignment
IP Version 4 (IPv4) uses a 32-bit address, four numbers (octets) separated by dots (e.g., 172.166.3.28)
IP Version 6 (IPv6) is the newer version, using 128 bits, expressed in hexadecimal (e.g., 3221:1cd7:74b6:6da7:0000:0000:7349:6472)
MAC addresses (Media Access Control) uniquely identify network interface controllers (NICs)
MAC addresses are 48 bits long and not routed between networks, typically expressed in hexadecimal with colons (e.g., 2C:54:91:88:C9:E3)

IP Address Types

Two main types of IP addresses (public and private)
Public addresses are used for communication outside the local network (external IP address)
Private addresses are used within the local network
A static IP address remains constant, while a dynamic IP address changes over time
Dynamic addresses are usually assigned by a DHCP (Dynamic Host Configuration Protocol) server
Static addresses are assigned manually or through a configuration protocol and do not change

IP Address Structure

IP addresses are composed of four numbers, each ranging from 0 to 255 (e.g., 192.158.1.38)
The IP address has two parts: the network ID (e.g., 192.168.1) and host ID (e.g., 32)
Each number in an IP address is an octet (byte)

IP Address Classes

IP addresses are categorized into classes A, B, C, D, and E (different ranges/size for different purposes)
Class A, B, and C addresses are commonly used on networks, while classes D and E are for specific use cases
Different classes support varying numbers of networks and hosts

Subnetting

Subnetting allows dividing a large network into smaller sub-networks
It is done by adjusting the host ID portion of the IP address to increase the network ID
This is done by modifying the subnet mask (e.g., 255.255.255.0) to allocate and manage multiple networks

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Description

This quiz covers essential concepts of logical and physical addressing in networking, focusing on IP and MAC addresses. It explains the importance of these addresses in data communication and the differences between IPv4 and IPv6. Test your understanding of how data is transmitted across different networks.