Private IP addresses
Utilize one subnet mask throughout an autonomous system
Utilize multiple subnet masks in the same IP address space
Utilize IGRP as the routing protocol in an entire autonomous system
Utilize multiple routing protocols within an autonomous system
255.255.255.252 for QA
255.255.255.224 for Sales
255.255.255.240 for QA
255.255.255.248 for QA
255.255.255.0 for Sales
The shortage of IP addresses
The difficulty of assigning static IP addresses to hosts in large enterprises
The complexity of implementing advanced routing protocols such as OSPF and EIGRP
The shortage of network administrators qualified in the use of RIP v1 and IGRP
192.168.0.0 – 192.168.32.0/24
192.168.0.0 – 192.168.47.0/24
192.168.32.0 – 192.168.47.0/24
192.168.32.0 – 192.168.48.0/24
192.168.32.0 – 192.168.63.0/24
Reduced routing table size
Dynamic address assignment
Automatic route redistribution
Reduced routing update traffic
Automatic summarization at classful boundaries
Next hop router interface
Unicast host address
Layer 2 address
Host B has a defective Ethernet card.
The default gateway on Host B is not correctly set.
There is a Layer 2 problem between R2 and Host B.
R2 does not have routes back to networks connected to R1.
Because RIPv2 does not support VLSM, the subnet masks will not be allowed.
The subnets will not have enough host addresses for the given network requirements.
The subnets overlap and will be rejected by the router.
The router will support the addressing scheme.
The network for a default route
A network that contains both private and public addresses
A set of discontiguous networks that are controlled by an ISP
A summarization of serveral IP classful networks into one IP address range