NET+ CIDR, Hosts - Review Flashcards
of IP Addresses / # of Hosts?
Netmask?
Class?
/32
1 IP Address / 0 Hosts
255.255.255.255
Class C
11111111 - 11111111 - 11111111 - 11111111 or (8*4+2=32)
- # of 0’s in the Binary at the end = Host bits, to find # of IP Addresses: 2 to the power (Host bit) = # of IP Addresses*
- Example: 2 to the power of (0) since there’s 0 Host bits = 1 IP Address
- # of IP Addresses - 2 = # of Hosts Available (-2 Addresses for the Network ID and Broadcast Addresses that are Reserved in the Range)*
- Example: 1 IP Address - 2 = NA Hosts*
of IP Addresses / # of Hosts?
Netmask?
Class?
/31
2 IP Addresses / 0 Hosts
255.255.255.254
Class C
11111111 - 11111111 - 11111111 - 11111110 or (8*3+7=31)
- # of 0’s in the Binary at the end = Host bits, to find # of IP Addresses: 2 to the power (Host bit) = # of IP Addresses*
- Example: 2 to the power of (1) since there’s 1 Host bits = 2 IP Addresses (2 = 2)
- # of IP Addresses - 2 = # of Hosts Available (-2 Addresses for the Network ID and Broadcast Addresses that are Reserved in the Range)*
- Example: 2 IP Addresses - 2 = 0 Hosts*
of IP Addresses / # of Hosts?
Netmask?
Class?
/30
4 IP Addresses / 2 Hosts
255.255.255.252
Class C
11111111 - 11111111 - 11111111 - 11111100 or (8*3+6=30)
- # of 0’s in the Binary at the end = Host bits, to find # of IP Addresses: 2 to the power (Host bit) = # of IP Addresses*
- Example: 2 to the power of (2) since there’s 2 Host bits = 4 IP Addresses (2 * 2 = 4)
- # of IP Addresses - 2 = # of Hosts Available (-2 Addresses for the Network ID and Broadcast Addresses that are Reserved in the Range)*
- Example: 4 IP Addresses - 2 = 2 Hosts*
of IP Addresses / # of Hosts?
Netmask?
Class?
/29
8 IP Addresses / 6 Hosts
255.255.255.248
Class C
11111111 - 11111111 - 11111111 - 11111000 or (8*3+5=29)
- # of 0’s in the Binary at the end = Host bits, to find # of IP Addresses: 2 to the power (Host bit) = # of IP Addresses*
- Example: 2 to the power of (3) since there’s 3 Host bits = 8 IP Addresses (2 * 2 * 2 = 8)
- # of IP Addresses - 2 = # of Hosts Available (-2 Addresses for the Network ID and Broadcast Addresses that are Reserved in the Range)*
- Example: 8 IP Addresses - 2 = 6 Hosts*
of IP Addresses / # of Hosts?
Netmask?
Class?
/28
16 IP Addresses / 14 Hosts
255.255.255.240
Class C
11111111 - 11111111 - 11111111 - 11110000 or (8*3+4=28)
- # of 0’s in the Binary at the end = Host bits, to find # of IP Addresses: 2 to the power (Host bit) = # of IP Addresses*
- Example: 2 to the power of (4) since there’s 4 Host bits = 16 IP Addresses (2 * 2 * 2 * 2 = 16)
- # of IP Addresses - 2 = # of Hosts Available (-2 Addresses for the Network ID and Broadcast Addresses that are Reserved in the Range)*
- Example: 16 IP Addresses - 2 = 14 Hosts*
of IP Addresses / # of Hosts?
Netmask?
Class?
/27
32 IP Addresses / 30 Hosts
255.255.255.224
Class C
11111111 - 11111111 - 11111111 - 11100000 or (8*3+3=27)
- # of 0’s in the Binary at the end = Host bits, to find # of IP Addresses: 2 to the power (Host bit) = # of IP Addresses*
- Example: 2 to the power of (5) since there’s 5 Host bits = 32 IP Addresses (2 * 2 * 2 * 2 * 2 = 32)
- # of IP Addresses - 2 = # of Hosts Available (-2 Addresses for the Network ID and Broadcast Addresses that are Reserved in the Range)*
- Example: 32 IP Addresses - 2 = 30 Hosts*
of IP Addresses / # of Hosts?
Netmask?
Class?
/26
64 IP Addresses / 62 Hosts
255.255.255.192
Class C
11111111 - 11111111 - 11111111 - 11000000 or (8*3+2=26)
- # of 0’s in the Binary at the end = Host bits, to find # of IP Addresses: 2 to the power (Host bit) = # of IP Addresses*
- Example: 2 to the power of (6) since there’s 6 Host bits = 64 IP Addresses (2 * 2 * 2 * 2 * 2 * 2 = 64)
- # of IP Addresses - 2 = # of Hosts Available (-2 Addresses for the Network ID and Broadcast Addresses that are Reserved in the Range)*
- Example: 64 IP Addresses - 2 = 62 Hosts*
of IP Addresses / # of Hosts?
Netmask?
Class?
/25
128 IP Addresses / 126 Hosts
255.255.255.128
Class C
11111111 - 11111111 - 11111111 - 10000000 or (8*3+1=25)
- # of 0’s in the Binary at the end = Host bits, to find # of IP Addresses: 2 to the power (Host bit) = # of IP Addresses*
- Example: 2 to the power of (7) since there’s 7 Host bits = 128 IP Addresses (2 * 2 * 2 * 2 * 2 * 2 * 2 = 128)
- # of IP Addresses - 2 = # of Hosts Available (-2 Addresses for the Network ID and Broadcast Addresses that are Reserved in the Range)*
- Example: 128 IP Addresses - 2 = 126 Hosts*
of IP Addresses / # of Hosts?
Netmask?
Class?
/24
256 IP Addresses / 254 Hosts
255.255.255.0
Class C
11111111 - 11111111 - 11111111 - 00000000 or (8*3=24)
- # of 0’s in the Binary at the end = Host bits, to find # of IP Addresses: 2 to the power (Host bit) = # of IP Addresses*
- Example: 2 to the power of (8) since there’s 8 Host bits = 256 IP Addresses (2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 = 256)
- # of IP Addresses - 2 = # of Hosts Available (-2 Addresses for the Network ID and Broadcast Addresses that are Reserved in the Range)*
- Example: 256 IP Addresses - 2 = 254 Hosts*
of IP Addresses / # of Hosts?
Netmask?
Class?
/23
512 IP Addresses / 510 Hosts
255.255.254.0
Class B
11111111 - 11111111 - 11111110 - 00000000 or (8*2+7=23)
- # of 0’s in the Binary at the end = Host bits, to find # of IP Addresses: 2 to the power (Host bit) = # of IP Addresses*
- Example: 2 to the power of (9) since there’s 9 Host bits = 512 IP Addresses (2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 = 512)
- # of IP Addresses - 2 = # of Hosts Available (-2 Addresses for the Network ID and Broadcast Addresses that are Reserved in the Range)*
- Example: 512 IP Addresses - 2 = 510 Hosts*
of IP Addresses / # of Hosts?
Netmask?
Class?
/22
1024 IP Addresses / 1022 Hosts
255.255.252.0
Class B
11111111 - 11111111 - 11111100 - 00000000 or (8*2+6=22)
- # of 0’s in the Binary at the end = Host bits, to find # of IP Addresses: 2 to the power (Host bit) = # of IP Addresses*
- Example: 2 to the power of (10) since there’s 10 Host bits = 1024 IP Addresses (2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 = 1024)
- # of IP Addresses - 2 = # of Hosts Available (-2 Addresses for the Network ID and Broadcast Addresses that are Reserved in the Range)*
- Example: 1024 IP Addresses - 2 = 1022 Hosts*
of IP Addresses / # of Hosts?
Netmask?
Class?
/21
2048 IP Addresses /2046 Hosts
255.255.248.0
Class B
11111111 - 11111111 - 11111000 - 00000000 or (8*2+5=21)
- # of 0’s in the Binary at the end = Host bits, to find # of IP Addresses: 2 to the power (Host bit) = # of IP Addresses*
- Example: 2 to the power of (11) since there’s 11 Host bits = 2048 IP Addresses (2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 = 2048)
- # of IP Addresses - 2 = # of Hosts Available (-2 Addresses for the Network ID and Broadcast Addresses that are Reserved in the Range)*
- Example: 2048 IP Addresses - 2 = 2046 Hosts*
of IP Addresses / # of Hosts?
Netmask?
Class?
/20
4096 IP Addresses / 4094 Hosts
255.255.240.0
Class B
11111111 - 11111111 - 11110000 - 00000000 or (8*2+4=20)
- # of 0’s in the Binary at the end = Host bits, to find # of IP Addresses: 2 to the power (Host bit) = # of IP Addresses*
- Example: 2 to the power of (12) since there’s 12 Host bits = 4096 IP Addresses (2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 = 4096)
- # of IP Addresses - 2 = # of Hosts Available (-2 Addresses for the Network ID and Broadcast Addresses that are Reserved in the Range)*
- Example: 4096 IP Addresses - 2 = 4094 Hosts*
of IP Addresses / # of Hosts?
Netmask?
Class?
/19
8192 IP Addresses / 8190 Hosts
255.255.224.0
Class B
11111111 - 11111111 - 11100000 - 00000000 or (8*2+3=19)
- # of 0’s in the Binary at the end = Host bits, to find # of IP Addresses: 2 to the power (Host bit) = # of IP Addresses*
- Example: 2 to the power of (13) since there’s 13 Host bits = 8192 IP Addresses (2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 = 8192)
- # of IP Addresses - 2 = # of Hosts Available (-2 Addresses for the Network ID and Broadcast Addresses that are Reserved in the Range)*
- Example: 8192 IP Addresses - 2 = 8190 Hosts*
of IP Addresses / # of Hosts?
Netmask?
Class?
/18
16384 IP Addresses / 16382 Hosts
255.255.192.0
Class B
11111111 - 11111111 - 11000000 - 00000000 or (8*2+2=18)
- # of 0’s in the Binary at the end = Host bits, to find # of IP Addresses: 2 to the power (Host bit) = # of IP Addresses*
- Example: 2 to the power of (14) since there’s 14 Host bits = 16384 IP Addresses (2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 * 2 *2 = 16384)
- # of IP Addresses - 2 = # of Hosts Available (-2 Addresses for the Network ID and Broadcast Addresses that are Reserved in the Range)*
- Example: 16384 IP Addresses - 2 = 16382 Hosts*