Computer Networks Assignment
Question One
An organization is assigned the IP address 14.24.75.0/26. The organization needs two subblocks: the first subblock with 15 devices, and the second one with 10 devices.Address space of the first subblock follows the address space of the second subblock.
a) What is the first address of the first subblock?
b) What is the last address of the first subblock?
c) What is the total number of addresses in the first subblock?
d) What is the first address of the secondsubblock?
e) What is the last address of the secondsubblock?
f) What is the total number of addresses in the second subblock?
g) What is the network address of the first subblock?
h) Can we add a third subblock with 44 devices? Explain.
Show or explain how to get your answers. Final answers should be in decimal dotted notation.
* Do not provide any drawings/figures in your answers. Otherwise your work is awarded a zero mark.
Question Two
Based on the figure below, fill out the following routing tables using OSPF routing protocol.
R2 Forwarding Table
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Destination Network
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Next Router
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Cost
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N1
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10
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N2
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4
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N3
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6
|
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N4
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9
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R3 Forwarding Table
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Destination Network
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Next Router
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Cost
|
|
N1
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R2
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|
|
N2
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R2
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|
|
N3
|
----------
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|
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N4
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|
Question Three
Reliability can be achieved by adding error control services to the transport layer. What are the responsibilities of the error control at the Transport layer? List threeresponsibilities.
Question Four
There are different transport layer protocols including Stop-and-Wait, GBN, and SR.
1) How efficiency is improved in GBN compared to Stop-and-Wait?
2) How efficiency is improved in SR compared to GBN?
Format your assignment according to the following formatting requirements:
1. The answer should be typed, double spaced, using Times New Roman font (size 12), with one-inch margins on all sides.
2. The response also include a cover page containing the title of the assignment, the student's name, the course title, and the date. The cover page is not included in the required page length.
3. Also Include a reference page. The Citations and references should follow APA format. The reference page is not included in the required page length.