Subnetting Mastery Test

1. What is the default subnet mask for a Class A network?

255.0.0.0 255.255.255.0 255.255.0.0 255.255.255.255

2. How many usable host addresses are in a /24 network?

256 254 255 253

3. What does VLSM stand for?

Variable Length Subnet Mask Very Large Subnet Mask Virtual LAN Subnet Method Variable Link Subnet Map

4. Which IP address class has the range 192.0.0.0 to 223.255.255.255?

Class A Class B Class C Class D

5. What is the CIDR notation for a subnet mask of 255.255.255.248?

/26 /29 /28 /27