IP Address Classes

Question 1

Class A

Answer 1

N.H.H.H
1.0.0.1 to 126.255.255.254

Supports > 16x10^6 hosts on 126 networks
For nets with many hosts
Hi Order Bit: 0

Question 2

Class B

Answer 2

N.N.H.H
128.1.0.1 to 191.255.255.254

Supports >65k hosts on >16k nets
Medium to large nets
Hi order bit: 10

Question 3

Class C

Answer 3

N.N.N.H
192.0.1.1 to 223.255.254.254

Supports 254 hosts on 2x10^6 nets
Small nets
Hi order bits: 110

Question 4

Class D

Answer 4

224.0.0.0 to 239.255.255.255
Reserved for multicast groups
4 hi order bits: 1110

Question 5

Class E

Answer 5

240.0.0.0 to 254.255.255.254
Reserved for future use, research and development
4 hi order bits: 1111

Question 6

Ranges 127.x.x.x

Answer 6

Reserved for loopback and localhosts

Question 7

Loopback

Answer 7

127.0.0.1

Question 8

Broadcast address to all LAN hosts?

Answer 8

255.255.255.255

Question 9

Automatically Assigned IPs/Dynamic Allocation

Network Address

Answer 9

192.168.1.0

Question 10

Automatically Assigned IPs/Dynamic Allocation

Default Gateway Address

Answer 10

192.168.1.1

Question 11

Automatically Assigned IPs/Dynamic Allocation

Common Gateway Address

Answer 11

192.168.1.2

Question 12

Automatically Assigned IPs/Dynamic Allocation

Address Range for Devices on the LAN

Answer 12

192.168.1.3-254

Question 13

Automatically Assigned IPs/Dynamic Allocation

Broadcast Address

Answer 13

192.168.1.255

255 is commonly the broadcast address

Question 14

NAT

Answer 14

Forwards data between LAN hosts and the WAN/

Resolves local IPs to WAN IPs and vice versa

Question 15

InterNIC

Answer 15

Agency that registers WAN IPs

Question 16

First Octet Class B

Answer 16

128-191….

Question 17

First Octet Class C

Answer 17

192-223….

Question 18

First Octet Class D

Answer 18

224-239….

Question 19

First Octet Class A

Answer 19

1-126….

Question 20

APIPA Range

Answer 20

When the DHCP process fails, Windows automatically allocates an IP address from the private range 169.254.0.1 to 169.254.255.254