IP and Subnetting

Question 1

What is the range of Class A IP addresses?

Answer 1

10.0.0.0 -> 10.255.255.255

Note: Total IP Addresses available: over 16 million

Question 2

What is the IP address range in Class B?

Answer 2

172.16.0.0 -> 172.31.255.255

Note: 65,000+ IP addresses available.

Question 3

What is the IP range of Class C IP address?

Answer 3

192.168.0.0 -> 223.255.255.255

Note: Total IP address available 254

Question 4

How does the private address work with public IP address?

Answer 4

Network Address Translation

Question 5

What are the 6 rules of submitting?

Answer 5

1. ) ID Class (A,B,C).
2. ) ID Network and Node ID. (Draw line in octet)
3. ) Apply default subnet mask.
4. ) Convert subnet to binary
5. ) Use the formula 2n-2 to determine custom subnet mask (when asked to create a custom amount of networks, change the mask to 2n)
6. ) determine LSB (least significant bit), it gives you 1st subnet and range

Question 6

What class range is 1 to 126 IP address in the first octet?

Answer 6

Class A

Question 7

What class range is 128 to 192 IP address in the first octet?

Answer 7

Class B

Question 8

What class range is 192 to 223 IP address in the first octet?

Answer 8

Class C

Question 9

Based on classes what part of the IP is the network ID and what part is the host/node?

Answer 9

Class A: network.node.node.node
Class B: Network.Network.Node.Node
Class C: Network.Network.Network.Node

Tips:
Network is like area code
Node/Host is address.

Question 10

What is the class A private IP address?

Answer 10

10.0.0.0 to 10.255.255.255

Question 11

What is the class B private IP address?

Answer 11

172.16.0.0 to 172.31.255.255

Question 12

What is the class C private IP address?

Answer 12

192.168.0.0 to 192.168.255.255

Question 13

How do you know which part of Subnet mask is Network and which part is hosts in 255.255.255.0

Answer 13

255. 255.255.0
256. 11111111.11111111.00000000

The 1s in binary represent network ID and the 0s represent the nodes/hosts.

Question 14

What is the purpose of having a subnet mask?

Answer 14

To determine which part is the network ID and which one is the Host/Node.

Question 15

What is a binary calculator chart?

Answer 15

128 | 64 | 32 | 16 | 8 | 4 | 2 | 1

Question 16

How do covert binary to decimals?

Eg. 01100110

Answer 16

128 | 64 | 32 | 16 | 8 | 4 | 2 | 1
0 | 1 | 1 | 0 | 0 | 1 | 1 | 0

Calculate the 1s

64+32+4+2= 102

Question 17

How does 2n-2 work?

Answer 17

2n0 = 1
2n1 = 2
2n2 = 4
2n3 = 8
2n4 = 16
2n5 = 32
2n6 = 64
2n7 = 128

Then you have to minus two for Network ID and broadcast address