Home » Cisco » 200-120 » Which two benefits are provided by using a hierarchical addressing network addressing scheme?
Which two benefits are provided by using a hierarchical addressing network addressing scheme? (Choose two.)
A. reduces routing table entries
B. auto-negotiation of media rates
C. efficient utilization of MAC addresses
D. dedicated communications between devices
E. ease of management and troubleshooting
Correct Answer: AE
Explanation/Reference:
Explanation:
Here are some of the benefits of hierarchical addressing:
Reduced number of routing table entries — whether it is with your Internet routers or your internal routers, you should try to keep your routing tables as small as possible by using route summarization. Route summarization is a way of having a single IP address represent a collection of IP addresses; this is most easily accomplished when you employ a hierarchical addressing plan. By summarizing routes, you can keep your routing table entries (on the routers that receive the summarized routes) manageable, which offers the following benefits:
– More efficient routing
– A reduced number of CPU cycles when recalculating a routing table or sorting through the routing table entries to find a match
– Reduced router memory requirements
– Reduced bandwidth required to send the fewer, smaller routing updates
– Faster convergence after a change in the network
– Easier troubleshooting
– Increased network stability
Efficient allocation of addresses — Hierarchical addressing lets you take advantage of all possible addresses because you group them contiguously.
Reference: http://www.ciscopress.com/articles/article.asp?p=174107
|
FULL Printable PDF and Software. VALID exam to help you pass.
|
 |
