Considering Automatic Repeat Request, suppose two neighboring nodes (Ali and Bilal) use a sliding-window protocol with X-bit sequence number. Using go-back-N with a window size of Y in the ARQ mechanism, Ali is a transmitting and Bilal is a receiving node. Use the values of X and Y to show the window positions for the following events of data exchange:

• Create window before Ali sends any number of frames
• Show the window after Ali sends frames =X and receives acknowledgment from Bilal for only first two frames.
• After Ali sends frames 3, 4, 5 and 6 and Bilal sends acknowledgement of frame 5 to Ali.

Where X= number of characters in your first name and Y= number of characters in your second name.

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