Graphic design python turtle 🐢

By Kajal Vishwakarma -
from turtle import * import colorsys bgcolor('black') pensize(0) tracer(50) h=0 for i in range(300): c=colorsys.hsv_to_rgb(h,1,1) h+=0.9 color(c) forward(300) left(100) fd(i) goto(0,0) down() rt(90) begin_fill() circle(0) end_fill() rt(10) for j in range(5): rt(30) done() Please follow my blog and subscribe my channel for more videos and newly updates 👍👍👍👍👍 import turtle as t import colorsys t.bgcolor('black') t.tracer(100) h=0.4 def draw(ang,n): t.circle(5+n,60) t.left(ang) t.circle(5+n,60) for i in range(200): c=colorsys.hsv_to_rgb(h,1,1) h+=0.005 t.color(c) t.pensize(2) draw(90,i*2) draw(120,i*2.5) draw()
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design issues for the layers

By Kajal Vishwakarma -

 Some of the key design issues are listed below-

1. Every layer needs a mechanism for identifying transmitters and receivers. Because a network generally contain several computers, some form of addressing is needed in order to specify a specific computer.

2. Decision should be made about the rules for data transfer. Among the following three modes of data communication one may be selected.

a) Simplex Communication:- Data only travels in one direction. For example, home television set.

b) Half-duplex Communication:- Data can travel in either direction, but not simultaneously. For example, wireless.

c) Full-duplex Communication:- Data travels in both directions at once. For example, telephonic conversation.

The protocol must also determine about the number of logical channels per connection and about their priorities.

3. The layer should have some means for error detection and error correction.

4. The layer should have some mechanism for orderly Transfer of data, this involves the capability to piece data at one end and join the pieces at other end.

5. There should be a mechanism for flow control and congestion control.

6. There should be enough means to multiplex the data from many communicating processes, over the same physical circuit.

7. The layers must have mechanism for decoding about the quality of service reply, reliable, priority, etc.

8. There must be a mechanism to make routing decision in case there are multiple paths between source and destination.

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