The routing algorithm is a formula that is stored in the router's memory.
If it can be measured, it can be compared with the Pythagorean Theorem. Understanding The Theorem We agree the theorem works. In any right triangle: Well, a key observation is that a and b are at right angles notice the little red box.
Movement in one direction has no impact on the other. The Pythagorean Theorem lets you use find the shortest path distance between orthogonal directions.
If I walk 3 blocks East and 4 blocks North, how far am I from my starting point? Be sure to bring adequate provisions for your journey. Well, we could think of c as just a number, but that keeps us in boring triangle-land.
I like to think of c as a combination of a and b. Moving along C means you go East and North at the same time. Neat way to think about it, eh?
Take a look at this: We draw another triangle in red, using c as one of the sides.
Since c and d are at right angles orthogonal! Starting to see a pattern?
Put on your 3D Goggles Think two triangles are strange? Try pulling one out of the paper. Instead of lining the triangles flat, tilt the red one up: If we call the sides x, y and z instead of a, b and d we get: And now we can find the 3-d distance to a point given its coordinates!
You can imagine that each triangle is in its own dimension.
If segments are at right angles, the theorem holds and the math works out. Well, we can create a virtual triangle between the endpoints by subtracting corresponding sides. The hypotenuse of the virtual triangle is the distance between points: It can apply to any orthogonal dimensions: In fact, it can apply to any set of numbers a,b,c,d,e.
How did you like Rambo? Pythagoras to the rescue! If we represent ratings as a "point" Rambo, Bambi, Seinfeld we can represent our survey responses like this: Tough Guy to Average Joe:Get an answer for 'What's the difference between speed and velocity?' and find homework help for other Science questions at eNotes.
Distance vector versus link-state. There are two major classes of routing protocol: distance vector and link-state.
It's easy to remember which protocols belong to either class, but comprehending the differences between the two classes takes a bit more effort. An URL is a string of characters that contains information about how to fetch a resource from its location.
An URL specifies the primary access mechanism and the network location of a resource. Search Results for 'compare and contrast distance vector and link state routing' Link State Routing COMP Internet Services & Protocols The Network Layer: Routing & Addressing Kevin Jeffay Department of Computer Science University of North Carolina at Chapel Hill.
EIGRP exhibits both distance-vector and link-state characteristics, Distance-vector protocols utilize some form of distance to calculate a route’s metric.
RIP uses hopcount as its distance metric, and IGRP uses a Microsoft Word - schwenkreis.com Author. Definition: Any point, in specifies a vector in the plane, namely the vector starting at the origin and ending at x.. This definition means that there exists a vector between the origin and A.