VLSM 2

On each IP subnet

• the first and last IP addresses are unusable
• all IP addresses are usable
• only the even IP addresses are usable
• only the odd IP addresses are usable

The first IP address on each subnet represents

• the entire network (its identity)
• the broadcast IP address for the subnet
• the gateway’s IP address
• nothing in particular

The last IP address on each subnet represents

• the entire network (its identity)
• the broadcast IP address for the subnet
• the gateway’s IP address
• nothing in particular

The broadcast IP address on any subnet is

• always an odd number
• always an even number
• always 255.255.255.255
• any old IP address in the range

VLSM is the process of

• dividing an IP allocation up into subnets of different sizes
• using different netmasks on PCs in the same subnet
• turning on a routing protocol
• removing Layer 2 loops

A subnet MUST

• start on a multiple of its size
• start at the number 0 in the host section
• always be size 256 IP addresses
• never be given to people under 18

Which IP address is the first one on a /26 sized subnet?

• 100.1.1.32
• 100.1.1.64
• 100.1.1.90
• 100.1.1.96

What is the broadcast IP address on the subnet 100.1.1.0 /26?

• 100.1.1.63

• 100.1.1.64

• 100.1.1.127

• 100.1.1.128

What is the VLSM rule of thumb?

• Allocate subnets from biggest to smallest
• Allocate subnets from smallest to biggest
• Allocate subnets in any order
• Allocate them in zodiac order