CCNA 1 subnetting/IP addresses
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- What are the three ranges for private IP addressing?
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Set 1 10.0.0.0 - 10.255.255.255
Set 2 172.16.0.0 - 172.31.255.255
Set 3 192.168.0.0 - 192.168.255.255 - How many host addresses are available if the IP subnet address is 206.15.8.0/20
- 4094
- Define a Class E IP address
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Reserved for future use.
An experimental address. High-order bits in a class E address are set to 1111.
Any IP address that starts
240.0.0.0 – 255.255.255.255 - What are the IP address ranges for loopback addressing
- Loopback 127.0.0.0 - 127.255.255.255
- Define a Class C IP address
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Assigned to networks with a small number of hosts, specifically, local area networks (LANs).
The three high-order bits in a class C address are always set to binary 110.
The next 21 bits — completing the first three octets — complete the network identifier.
The remaining 8 bits — the last octet — represent the host identifier.
This accommodates more than 2 million networks and 254 hosts for each network.
Any IP address that starts 192.0.0.0 - 223.255.255.0 is an C Class address - Define a Class D IP address
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Used for multicasting to a number of hosts.
Packets are passed to a selected subset of hosts on a network.
Only those hosts registered for the multicast address accept the packet.
The four high-order bits in a class D address are always set to 1110.
The remaining bits are for the address that registered hosts will recognize.
Any IP address that starts 224.0.0.0 – 239.255.255.255 is an D Class address - What are the IP address ranges for Class A - E addressing
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Class A 1.0.0.0 - 126.0.0.0
Loopback 127.0.0.0 - 127.255.255.255
Class B 128.0.0.0 - 191.255.0.0
Class C 192.0.0.0 - 223.255.255.0
Class D 224-0.0.0 - 239.255.255.255
Class E 240.0.0.0 - 255.255.255.254 - Define a Class B IP address
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Assigned to networks with a medium to large number of hosts.
The two high-order bits in a class B address are always set to binary 10.
The next 14 bits — completing the first two octets — complete the network identifier.
The remaining 16 bits — the last two octets — represent the host identifier.
This accommodates 16,384 networks and more than 65,000 hosts for each network.
Any IP address that starts 128.0.0.0 –191.255.0.0 is an B Class address - How many usable subnets and hosts will you have if you subnet the network address 192.168.1.0 with the subnet mask 255.255.255.240
- 14 hosts & 14 subnets
- Define a Class A IP address
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Assigned to networks with a large number of hosts.
The high-order bit in a class A address is always set to binary 0.
The next seven bits, completing the first octet, complete the network identifier.
The remaining 24 bits — the last three octets — represent the host identifier.
This accommodates 126 networks, 128 minus two reserved (0 – 127) addresses, and over 16 million hosts for each network.
Any IP address that starts 1.0.0.0. - 126.0.0.0 is an A Class address