| Exam 200-105 | Question id=1901 | WAN Technologies |
What is the advantage of using a multipoint interface instead of point-to-point subinterfaces when configuring a Frame Relay hub in a hub-and-spoke topology?
| A. |
It avoids split-horizon issues with distance vector routing protocols. | |
| B. |
IP addresses can be conserved if VLSM is not being used for subnetting. | |
| C. |
A multipoint interface offers greater security compared to point-to-point subinterface configurations. | |
| D. |
The multiple IP network addresses required for a multipoint interface provide greater addressing flexibility over point-to-point configurations. |
You do not have to assign a separate subnet per sub-interface. If you're using a Class A network (10.x.x.x/8), you blow the whole network on a few connections (if you used VLSM, you could use a better mask, limit the addresses used). if you used 10.0.0.0/8, you would not be assigning the entire /8 to a single network. You would select a subnet mask for the network and then, you would have to use that mask with all subnets of the network. So if you chose a /24 mask, that would mean that you would have to use a /24 mask for even point-to-point links