Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / tushar
he 5-4-3-2-1 rule embodies a simple recipe for network design. It may not be easy to find examples in practice, but this rule neatly ties together several important elements of design theory.
To understand this rule, it's first necessary to understand the concepts of collision domains and propagation delay. Collision domains are portions of a network. When a network packet is transmitted over Ethernet, for example, it is possible for another packet from a different source to be transmitted close enough in time to the first packet to cause a collision on the wire. The total range over which a packet can travel and potentially collide with another is its collision domain.
Propagation delays are a property of the physical medium (e.g., Ethernet). Propagation delays help determine how much of a time difference between the sending of two packets on a collision domain is "close enough" to actually cause a collision. The greater the propagation delay, the increased likelihood of collisons.
The 5-4-3-2-1 rule limits the range of a collision domain by limiting the propagation delay to a "reasonable" amount of time. The rule breaks down as follows:
5 - the number of network segments
4 - the number of repeaters needed to join the segments into one collision domain
3 - the number of network segments that have active (transmitting) devices attached
2 - the number of segments that do not have active devices attached
1 - the number of collision domains
Because the last two elements of the recipe follow naturally from the others, this rule is sometimes also known as the "5-4-3" rule for short.
| Is This Answer Correct ? | 12 Yes | 2 No |
Post New Answer View All Answers
What are the different types of the password used in securing a cisco router?
Explain the terms unicast, multicast, broadcast.
In port based access-list which command u give instead of ip?
What is 10baset ethernet lans?
1>What do you mean by Networks and Networking? 2>Difference between Vlan And Sub Interface Vlan? 3>What is Fiber Optic Media Converter? 4>What is Firewall? 5>Difference Between Layer2 and Layer3 Switch? 6>What is the function of Multilayer Switch? 7>Expalin STP? What is the Difference between STP and MST? 8>What is the Function of VTP?Explain the modes of VTP? 9>What kind of Message VTp will Send? 10>What is the Difference between Normal and Manageable Switch? 11>Difference between Local Vlan and End to End Vlan? 12>Difference between Distance Vector and Link State Routing protocol? 13>What do you mean by Backbone Fast Port? 14>what is Root Guard and BPDU Guard?
What is the size of ipv6?
What is 100BaseFX?
Define network congestion?
Why is network segmentation a good idea when managing a large network?
Mention what are the ranges for the private ips?
What is 10base5 ethernet lans?
What is the different between console port and auxiliary port?
What is difference between tcp/ip and osi model?
What is the default size of frame?
What does the show protocol display?
