Podcast
Questions and Answers
What is the address length of IPv4?
What is the address length of IPv4?
- 32-bit (correct)
- 256-bit
- 128-bit
- 64-bit
Which network class uses the first 16 bits to identify the network?
Which network class uses the first 16 bits to identify the network?
- Class C
- Class B (correct)
- Class A
- Class D
What is the range of addresses in a Class A network?
What is the range of addresses in a Class A network?
- 1 to 63
- 0 to 255
- 1 to 255
- 1 to 126 (correct)
Which IP version provides an inbuilt security feature known as IPSEC?
Which IP version provides an inbuilt security feature known as IPSEC?
How many bytes is the header size in IPv6?
How many bytes is the header size in IPv6?
Which IP version provides encryption and authentication facilities?
Which IP version provides encryption and authentication facilities?
What is the distinguishing feature of a Class C IP address?
What is the distinguishing feature of a Class C IP address?
Which IP address class is reserved for multicasting applications?
Which IP address class is reserved for multicasting applications?
What distinguishes Class E IP addresses from other classes?
What distinguishes Class E IP addresses from other classes?
Which IP address class is commonly used for small networks like local area networks (LANs)?
Which IP address class is commonly used for small networks like local area networks (LANs)?
What range of IP addresses falls under Class D addresses?
What range of IP addresses falls under Class D addresses?
In Class E IP address, what is the primary purpose for which it is reserved?
In Class E IP address, what is the primary purpose for which it is reserved?
What is the purpose of subnetting in a network?
What is the purpose of subnetting in a network?
What distinguishes private IP addresses from public IP addresses?
What distinguishes private IP addresses from public IP addresses?
What does VLSM (Variable Length Subnet Masking) enable in a network?
What does VLSM (Variable Length Subnet Masking) enable in a network?
What is the primary function of DHCP in a network?
What is the primary function of DHCP in a network?
How do subnet masks contribute to IP address division?
How do subnet masks contribute to IP address division?
Which mechanism allows for efficient utilization of IP addresses by allocating larger subnets to segments with more hosts?
Which mechanism allows for efficient utilization of IP addresses by allocating larger subnets to segments with more hosts?
Study Notes
IP Addresses
- IP addresses are mathematically produced and allocated by the Internet Assigned Numbers Authority (IANA)
- There are two versions of IP addresses: IPv4 and IPv6
IPv4
- Has a 32-bit address length
- Supports manual and DHCP address configuration
- Can generate 4.29×10^9 address space
- Security feature is dependent on application
- Address representation is in decimal
- No encryption and authentication facility is provided
- Header size is 20-60 bytes
IPv6
- Has a 128-bit address length
- Supports auto and renumbering address configuration
- Can generate 3.4×10^38 address space
- Has inbuilt security feature IPSEC
- Address representation is in hexadecimal
- Encryption and authentication are provided
- Header size is 40 bytes fixed
IP Address Classes
- Class A: used for large networks, first 8 bits identify the network, and the remaining 24 bits for the host
- Address range: 1 to 126
- Class B: used for medium-sized networks, first 16 bits identify the network, and the remaining 16 bits for the host
- Address range: 128 to 191
- Class C: used for small networks, first 24 bits identify the network, and the remaining 8 bits for the host
- Address range: 192 to 223
- Class D: used for multicasting applications, first 4 bits set to 1 and the fourth bit set to 0
- Address range: 224 to 239
- Class E: reserved for research and development purposes, first 4 bits set to 1
- Address range: 240 to 255
Private and Public IP Addresses
- Private IP addresses are reserved for use within a private network and are not routable on the public Internet
- Public IP addresses are assigned by Internet authorities and are routable on the Internet
Subnetting and VLSM
- Subnetting is a technique that allows for dividing an IP address into smaller subnets
- VLSM (Variable Length Subnet Masking) is a technique that allows for using different subnet masks within the same network address space
DHCP Server
- Dynamic Host Configuration Protocol is an application layer protocol that provides:
- Subnet mask
- Router address
- DNS address
- Vendor class identifier
Subnet Mask
- A subnet mask is a 32-bit number created by setting host bits to all 0s and setting network bits to all 1s
- Used to divide an IP address into two parts: one identifies the host, and the other identifies the network
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Description
Learn about the differences between IPv4 and IPv6 addressing, including address lengths, configuration support, address space, security features, and encryption/authentication capabilities.
