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diff --git a/assignments/1.md b/assignments/1.md
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-Assignment 1 - Instructions
-
-1 of 3
-
-https://learning.athabascau.ca//content/enforced/16029-co_COMP347_R9/Content/03...
-
-After completion of Units 1 and 2 20% of your �nal grade
-
-This assignment should be done after you have completed your study of
-Unit 1 and Unit 2. Your assignment must be written in either MS-Word or
-HTML and it must begin with a cover page containing the course number
-and title, assignment number, your name and your student ID, as well as
-the time you spent on the assignment. The �le containing the cover page
-must be named or If you have more than one �le for the assignment, those
-�les and all other �les should be accessible through the �le containing
-the cover page, either directly or indirectly through hyperlinks.
-
-You need to create a root directory or folder named somewhere on the �le
-system of your computer and keep all your work related to the course
-under that directory; for this assignment you need to create a
-subdirectory or subfolder named and put all the necessary �les for the
-assignment under that dedicated subdirectory. When you submit your
-assignment, you must compress the entire subdirectory of in a �le named
-and send the compressed �le for marking. By default, you must answer
-each of the questions in your own words with enough details to show your
-work for your solutions, and ! Please read the university's academic
-misconduct policy  carefully before you begin the assignment.
-
-1.1
-
-(5%) Run Traceroute, TRACERT (on Windows), or another similar utility
-between a source and a destination in the country in which you reside.
-Do this at three di�erent times of the day. Summarize your �ndings at
-each of the times with respect to the following, and explain your
-�ndings:
-
-• •
-
-average and standard deviation of the round-trip delays number of
-routers in the path
-
-If you are not familiar with the utility, read the Microsoft article,
-"How to Use TRACERT  ." 1.2
-
-(5%) What are the �ve layers in the Internet protocol stack? Develop a
-table to summarise what each layer does.
-
-1.3
-
-(5%) What are packet-switched network and circuit-switched network,
-respectively? Develop a table to summarise their features, pros, and
-cons.
-
-1.4
-
-(5%) What are processing delay, queuing delay, transmission delay, and
-propagation delay, respectively? Where does each delay occur? What is
-tra�c intensity? Why should the tra�c intensity be no greater than one
-(1) when designing a computer network?
-
-1.5
-
-(5%) What is Web-caching? When may Web-caching be more useful in a
-university? What problem does the conditional GET in HTTP aim to solve?
-
-1.6
-
-(5%) Suppose you have a Web-based email account, such as Gmail, and you
-have just sent a message to a friend, Alice, who accesses her mail from
-her mail server using IMAP. Assume that both you and Alice are using a
-smartphone to access emails via Wi-Fi at home. List all the network
-protocols that may be involved in sending and receiving the email.
-Discuss in detail how the message went from your smartphone to Alice's
-smartphone---that is, how the message went through all the network
-protocol layers on each of the network devices involved in the
-communication. Ignore everything between your ISP and Alice's ISP.
-
-Solve the following network problems and show your work in detail.
-5/19/25, 17:56
-
-Assignment 1 - Instructions
-
-2 of 3
-
-2.1
-
-https://learning.athabascau.ca//content/enforced/16029-co_COMP347_R9/Content/03...
-
-(20%) Consider that you are submitting your assignment in a compressed
-�le from your computer at home to the university server that is hosting
-your online course. Your large �le is segmented into smaller packets
-before it is sent into the �rst link. Each packet is 10,000 bits long,
-including 100 bits of header. Assume the size of the assignment �le is
-10 MB. a. How many packets will the assignment �le be segmented into? b.
-How many links can be identi�ed using TRACERT or Traceroute between your
-computer and the university server? What are they? c. What is the speed
-for each identi�ed link based on your best calculation? Show your work.
-d. Assume you start uploading the assignment at t0. At what time will
-the last packet be pushed into the �rst link? e. At what time will the
-last packet arrive at the university server?
-
-2.2
-
-(20%) Consider that you are submitting another assignment from your home
-computer to the university server, and you have worked out a list of
-network links between your computer and the university server. a. Based
-on your best estimate and calculation, what is the total distance your
-assignment data will travel to reach the university server? b. Suppose
-the propagation speed over all the links is the same 2*10\^8
-meters/sec. What is propagation delay Tprop from your computer to the
-university server? c. Further assume all the links have the same speed R
-bps. What is the bandwidth-delay product R*Tprop? d. Now suppose the
-assignment �le is sent continuously as one big �le. What is the maximum
-number of bits that will be in the links at any given time? e. Based on
-the results from c and d, what does the bandwidth-delay product imply?
-
-2.3
-
-(20%) You have learned that a Web cache can be useful in some cases. In
-this problem, you will investigate how useful a Web cache can be at a
-home. First, you need to download Apache server  and install and run it
-as a proxy server on a computer on your home network. Then, write a
-brief report on what you did to make it work and how you are using it on
-all your devices on your home network. Assume your family has six
-members. Each member likes to download short videos from the Internet to
-watch on their personal devices. All these devices are connected to the
-Internet through Wi-Fi. Further assume the average object size of each
-short video is 100 MB and the average request rate from all devices to
-servers on the Internet is three requests per minute. Five seconds is
-the average amount of time it takes for the router on the ISP side of
-your Internet link to forward an HTTP request to a server on the
-Internet and receive a response. a. What is the average time for your
-home router to receive a video object from your ISP router? b. What is
-the tra�c intensity on the Internet link to your home router if none of
-the requested videos is cached on the proxy server? c. If average access
-delay is de�ned as what is the average access delay your family members
-will experience when watching the short videos? d. If the total average
-response time is de�ned as , and the miss rate of your proxy server is
-0.5, what will be the total average response time?
-
-2.4
-
-(10%) You have learned that a �le can be distributed to peers in either
-client--server mode or peer-topeer (P2P) mode. Consider distributing a
-large �le of F = 21 GB to N peers. The server has an upload rate of Us =
-1 Gbps, and each peer has a download rate of Di = 20 Mbps and an upload
-rate of U. For N = 10, 100, and 1,000 and U = 300 Kbps, 7000 Kbps, and 2
-Mbps, develop a table giving the minimum distribution time for each of
-the combination of N and U for both client--server distribution and P2P
-distribution. Comment on the features of client--server distribution and
-P2P distribution and the di�erences between the two.
-
-Submit your completed assignment to Assignment 1 for assessment
-(submission link will be available upon your course contract start
-date).
-
-5/19/25, 17:56
-
-Assignment 1 - Instructions
-
-3 of 3
-
-https://learning.athabascau.ca//content/enforced/16029-co_COMP347_R9/Content/03...
-
-1.  Once you submit the assignment for grading, your submission is �nal.
-    To resubmit the assignment, you obtain special permission from your
-    instructor.
-2.  Please name your �le using the following template:
-    `<course shortname>`{=html}*\<assignment#\>*`<lastname>`{=html}`<firstname>`{=html}\_`<studentID>`{=html}
-
-Examples:
-
-• • •
-
-COMP101_Assignment1_DoeJane_1234567
-COMP101_Assignment1\_�le1_DoeJane_1234567
-COMP101_FinalAssignment_DoeJane_1234567
-
-Copyright @ Athabasca University All Rights Reserved
-
-5/19/25, 17:56
-
-
diff --git a/assignments/1/aws-trace-1.txt b/assignments/1/aws-trace-1.txt
deleted file mode 100644
index f1bdee4..0000000
--- a/assignments/1/aws-trace-1.txt
+++ /dev/null
@@ -1,17 +0,0 @@
-traceroute to www.athabascau.ca (54.192.51.21), 30 hops max, 60 byte packets
- 1  244.5.0.5 (244.5.0.5)  7.591 ms 244.5.0.3 (244.5.0.3)  3.430 ms *
- 2  100.65.16.80 (100.65.16.80)  4.128 ms 100.65.17.32 (100.65.17.32)  4.200 ms 100.65.17.112 (100.65.17.112)  4.186 ms
- 3  100.66.8.116 (100.66.8.116)  10.666 ms 100.66.8.50 (100.66.8.50)  4.350 ms 100.66.8.0 (100.66.8.0)  6.629 ms
- 4  100.66.11.98 (100.66.11.98)  3.586 ms 100.66.10.230 (100.66.10.230)  3.386 ms 100.66.11.66 (100.66.11.66)  5.728 ms
- 5  100.66.7.195 (100.66.7.195)  5.857 ms 100.66.6.129 (100.66.6.129)  3.190 ms 100.66.7.229 (100.66.7.229)  5.555 ms
- 6  100.66.4.177 (100.66.4.177)  4.467 ms * 100.66.4.165 (100.66.4.165)  1.255 ms
- 7  100.65.10.193 (100.65.10.193)  2.096 ms 100.65.9.161 (100.65.9.161)  0.255 ms 100.65.8.65 (100.65.8.65)  1.629 ms
- 8  52.94.81.3 (52.94.81.3)  5.131 ms 52.94.81.11 (52.94.81.11)  5.029 ms  5.006 ms
- 9  * 52.94.82.116 (52.94.82.116)  1.818 ms 52.94.82.138 (52.94.82.138)  19.658 ms
-10  52.93.5.111 (52.93.5.111)  9.876 ms 52.93.5.109 (52.93.5.109)  9.854 ms 52.93.5.111 (52.93.5.111)  9.770 ms
-11  100.64.50.253 (100.64.50.253)  14.826 ms  14.674 ms  14.141 ms
-12  100.64.50.67 (100.64.50.67)  13.948 ms 100.64.50.69 (100.64.50.69)  21.357 ms 100.64.50.63 (100.64.50.63)  21.306 ms
-13  100.64.50.254 (100.64.50.254)  5.092 ms  5.089 ms  4.818 ms
-14  100.93.4.6 (100.93.4.6)  8.837 ms  8.804 ms 100.93.4.70 (100.93.4.70)  2.409 ms
-15  100.93.4.5 (100.93.4.5)  3.601 ms 100.93.4.3 (100.93.4.3)  3.808 ms 100.93.4.69 (100.93.4.69)  3.574 ms
-16  server-54-192-51-21.yul62.r.cloudfront.net (54.192.51.21)  1.178 ms  1.234 ms  1.214 ms
diff --git a/assignments/1/aws-trace-2.txt b/assignments/1/aws-trace-2.txt
deleted file mode 100644
index b86219d..0000000
--- a/assignments/1/aws-trace-2.txt
+++ /dev/null
@@ -1,17 +0,0 @@
-traceroute to www.athabascau.ca (54.192.51.45), 30 hops max, 60 byte packets
- 1  244.5.0.7 (244.5.0.7)  6.235 ms ec2-52-60-0-19.ca-central-1.compute.amazonaws.com (52.60.0.19)  8.304 ms 244.5.0.7 (244.5.0.7)  6.188 ms
- 2  100.65.16.144 (100.65.16.144)  6.189 ms 100.65.16.160 (100.65.16.160)  6.147 ms 100.65.16.208 (100.65.16.208)  6.131 ms
- 3  100.66.8.86 (100.66.8.86)  6.115 ms 100.66.8.50 (100.66.8.50)  6.190 ms 100.66.8.66 (100.66.8.66)  6.074 ms
- 4  100.66.10.170 (100.66.10.170)  6.059 ms 100.66.10.174 (100.66.10.174)  6.021 ms 100.66.11.168 (100.66.11.168)  6.025 ms
- 5  100.66.6.79 (100.66.6.79)  6.013 ms 100.66.7.239 (100.66.7.239)  5.994 ms 100.66.6.105 (100.66.6.105)  6.031 ms
- 6  * 100.66.4.7 (100.66.4.7)  8.556 ms 100.66.4.189 (100.66.4.189)  6.236 ms
- 7  100.65.8.161 (100.65.8.161)  0.414 ms 100.65.9.1 (100.65.9.1)  0.627 ms 100.65.8.161 (100.65.8.161)  0.386 ms
- 8  52.94.81.15 (52.94.81.15)  1.461 ms  1.453 ms 52.94.81.3 (52.94.81.3)  1.431 ms
- 9  52.94.82.94 (52.94.82.94)  1.921 ms * 52.94.82.248 (52.94.82.248)  2.005 ms
-10  52.93.5.111 (52.93.5.111)  2.418 ms  2.405 ms 52.93.5.101 (52.93.5.101)  2.370 ms
-11  100.64.50.253 (100.64.50.253)  20.273 ms  20.242 ms  20.273 ms
-12  100.64.50.23 (100.64.50.23)  20.167 ms 100.64.50.89 (100.64.50.89)  20.133 ms 100.64.50.95 (100.64.50.95)  20.122 ms
-13  100.64.50.254 (100.64.50.254)  7.722 ms  7.710 ms  7.693 ms
-14  100.93.4.70 (100.93.4.70)  7.690 ms  7.680 ms  7.668 ms
-15  100.93.4.5 (100.93.4.5)  7.648 ms 100.93.4.67 (100.93.4.67)  7.634 ms 100.93.4.3 (100.93.4.3)  1.813 ms
-16  server-54-192-51-45.yul62.r.cloudfront.net (54.192.51.45)  1.138 ms  1.719 ms  1.289 ms
diff --git a/assignments/1/aws-trace-3.txt b/assignments/1/aws-trace-3.txt
deleted file mode 100644
index 8c47f36..0000000
--- a/assignments/1/aws-trace-3.txt
+++ /dev/null
@@ -1,17 +0,0 @@
-traceroute to www.athabascau.ca (54.192.51.113), 30 hops max, 60 byte packets
- 1  ec2-52-60-0-21.ca-central-1.compute.amazonaws.com (52.60.0.21)  12.572 ms * 244.5.0.3 (244.5.0.3)  3.544 ms
- 2  * * 100.65.16.144 (100.65.16.144)  1.289 ms
- 3  100.66.8.100 (100.66.8.100)  6.324 ms 100.66.8.64 (100.66.8.64)  1.812 ms 100.66.8.104 (100.66.8.104)  5.226 ms
- 4  100.66.11.170 (100.66.11.170)  1.249 ms 100.66.10.230 (100.66.10.230)  7.441 ms 100.66.10.132 (100.66.10.132)  3.888 ms
- 5  100.66.7.201 (100.66.7.201)  2.845 ms 100.66.6.3 (100.66.6.3)  31.303 ms 100.66.6.99 (100.66.6.99)  2.033 ms
- 6  100.66.4.83 (100.66.4.83)  8.537 ms * 100.66.4.163 (100.66.4.163)  4.066 ms
- 7  100.65.8.97 (100.65.8.97)  1.107 ms 100.65.10.129 (100.65.10.129)  1.014 ms 100.65.8.65 (100.65.8.65)  5.429 ms
- 8  52.94.81.7 (52.94.81.7)  2.169 ms  2.020 ms 52.94.81.3 (52.94.81.3)  1.760 ms
- 9  52.94.82.94 (52.94.82.94)  1.925 ms 52.94.82.116 (52.94.82.116)  1.800 ms 52.94.82.138 (52.94.82.138)  1.967 ms
-10  52.93.5.97 (52.93.5.97)  1.681 ms 52.93.5.109 (52.93.5.109)  1.671 ms 52.93.5.99 (52.93.5.99)  1.576 ms
-11  100.64.50.253 (100.64.50.253)  18.228 ms  17.826 ms  17.109 ms
-12  100.64.50.87 (100.64.50.87)  17.070 ms 100.64.50.1 (100.64.50.1)  17.113 ms 100.64.50.7 (100.64.50.7)  17.032 ms
-13  100.64.50.254 (100.64.50.254)  1.863 ms  1.659 ms  1.841 ms
-14  100.93.4.70 (100.93.4.70)  1.827 ms  9.711 ms  9.679 ms
-15  100.93.4.67 (100.93.4.67)  3.080 ms  2.859 ms 100.93.4.3 (100.93.4.3)  2.074 ms
-16  server-54-192-51-113.yul62.r.cloudfront.net (54.192.51.113)  1.116 ms  1.133 ms  1.107 ms
diff --git a/assignments/1/telus-trace-1.txt b/assignments/1/telus-trace-1.txt
deleted file mode 100644
index d4fc175..0000000
--- a/assignments/1/telus-trace-1.txt
+++ /dev/null
@@ -1,41 +0,0 @@
-Retrieving speedtest.net configuration...
-<stdin>:960: DeprecationWarning: datetime.datetime.utcnow() is deprecated and scheduled for removal in a future version. Use timezone-aware objects to represent datetimes in UTC: datetime.datetime.now(datetime.UTC).
-Testing from TELUS (108.173.195.49)...
-Retrieving speedtest.net server list...
-Selecting best server based on ping...
-Hosted by TELUS Mobility (Calgary, AB) [5.29 km]: 33.245 ms
-Testing download speed................................................................................
-Download: 65.51 Mbit/s
-Testing upload speed......................................................................................................
-Upload: 94.73 Mbit/s
-traceroute to www.athabascau.ca (3.175.64.94), 30 hops max, 60 byte packets
- 1  _gateway (192.168.1.254)  15.554 ms  15.534 ms  15.525 ms
- 2  192.168.0.1 (192.168.0.1)  88.309 ms  88.301 ms  88.284 ms
- 3  10.139.230.1 (10.139.230.1)  88.748 ms  88.741 ms  88.733 ms
- 4  * * *
- 5  * * *
- 6  * * *
- 7  * * *
- 8  154.11.15.107 (154.11.15.107)  52.380 ms  31.372 ms  31.349 ms
- 9  * * *
-10  * * *
-11  * * *
-12  * * *
-13  * * *
-14  * * *
-15  * * *
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-22  * * *
-23  * * *
-24  * * *
-25  * * *
-26  * * *
-27  * * *
-28  * * *
-29  * * *
-30  * * *
diff --git a/assignments/1/telus-trace-2.txt b/assignments/1/telus-trace-2.txt
deleted file mode 100644
index 031ff66..0000000
--- a/assignments/1/telus-trace-2.txt
+++ /dev/null
@@ -1,40 +0,0 @@
-Retrieving speedtest.net configuration...
-Testing from TELUS (108.173.195.49)...
-Retrieving speedtest.net server list...
-Selecting best server based on ping...
-Hosted by TELUS Mobility (Calgary, AB) [5.29 km]: 29.761 ms
-Testing download speed................................................................................
-Download: 63.20 Mbit/s
-Testing upload speed......................................................................................................
-Upload: 97.04 Mbit/s
-traceroute to www.athabascau.ca (3.175.64.94), 30 hops max, 60 byte packets
- 1  _gateway (192.168.1.254)  15.514 ms  15.492 ms  15.482 ms
- 2  192.168.0.1 (192.168.0.1)  120.275 ms  120.267 ms  120.259 ms
- 3  10.139.230.1 (10.139.230.1)  127.327 ms  127.318 ms  127.310 ms
- 4  * * *
- 5  * * *
- 6  * * *
- 7  * * *
- 8  154.11.15.107 (154.11.15.107)  127.953 ms  135.925 ms  135.903 ms
- 9  * * *
-10  * * *
-11  * * *
-12  * * *
-13  * * *
-14  * * *
-15  * * *
-16  * * *
-17  * * *
-18  * * *
-19  * * *
-20  * * *
-21  * * *
-22  * * *
-23  * * *
-24  * * *
-25  * * *
-26  * * *
-27  * * *
-28  * * *
-29  * * *
-30  * * *
diff --git a/assignments/1/telus-trace-3.txt b/assignments/1/telus-trace-3.txt
deleted file mode 100644
index 1f472f0..0000000
--- a/assignments/1/telus-trace-3.txt
+++ /dev/null
@@ -1,40 +0,0 @@
-Retrieving speedtest.net configuration...
-Testing from TELUS (108.173.195.49)...
-Retrieving speedtest.net server list...
-Selecting best server based on ping...
-Hosted by TELUS Mobility (Calgary, AB) [5.29 km]: 28.749 ms
-Testing download speed................................................................................
-Download: 73.37 Mbit/s
-Testing upload speed......................................................................................................
-Upload: 89.23 Mbit/s
-traceroute to www.athabascau.ca (3.175.64.94), 30 hops max, 60 byte packets
- 1  _gateway (192.168.1.254)  15.583 ms  15.556 ms  15.541 ms
- 2  192.168.0.1 (192.168.0.1)  88.472 ms  88.459 ms  88.445 ms
- 3  10.139.230.1 (10.139.230.1)  76.451 ms  76.438 ms  76.425 ms
- 4  * * *
- 5  * * *
- 6  * * *
- 7  * * *
- 8  154.11.15.107 (154.11.15.107)  111.742 ms  104.936 ms  104.909 ms
- 9  * * *
-10  * * *
-11  * * *
-12  * * *
-13  * * *
-14  * * *
-15  * * *
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diff --git a/assignments/2.md b/assignments/2.md
deleted file mode 100644
index a4a860c..0000000
--- a/assignments/2.md
+++ /dev/null
@@ -1,215 +0,0 @@
-Assignment 2 - Instructions
-
-1 of 3
-
-https://learning.athabascau.ca//content/enforced/16029-co_COMP347_R9/Content/03...
-
-After completion of Units 3, 4, and 5 20% of your �nal grade
-
-This assignment should be done after you have completed your study of
-Unit 3, Unit 4, and Unit 5. Your assignment must be written in either
-MS-Word or HTML and it must begin with a cover page containing the
-course number and title, assignment number, your name and your student
-ID, as well as the time you spent on the assignment. The �le containing
-the cover page must be named or If you have more than one �le for the
-assignment, those �les and all other �les should be accessible through
-the �le containing the cover page, either directly or indirectly through
-hyperlinks.
-
-You need to create a root directory or folder named somewhere on the �le
-system of your computer and keep all your work related to the course
-under that directory; for this assignment you need to create a
-subdirectory or subfolder named and put all the necessary �les for the
-assignment under that dedicated subdirectory. When you submit your
-assignment, you must compress the entire subdirectory of in a �le named
-and send the compressed �le for marking. By default, you must answer
-each of the questions in your own words with enough details to show your
-work for your solutions, and Please read the university's academic
-misconduct policy  carefully before you begin the assignment.
-
-1.1
-
-(5%) TCP provides a reliable data transfer service on top of IP's
-unreliable best-e�ort service. Study related sections of the textbook
-and articles from other sources. In your own words, explain how TCP
-provides a reliable data transfer service.
-
-1.2
-
-(5%) While the RDT protocols are essentially stop-and-wait protocols,
-the GBN protocol allows the sender to send multiple packets without
-waiting for acknowledgement from the receiving parties. How does GBN
-achieve that?
-
-1.3
-
-(5%) Invention and adoption of IPv6 is a big advance in computer
-networking. What problems was IPv6 intended to solve? With the large
-number of networking devices and applications using IPv4 still in use,
-how is the transition from IPv4 to IPv6 being resolved?
-
-1.4
-
-(5%) SNMP is a protocol for network management. It has seven message
-types. What are the purposes of the SNMP GetRequest and SetRequest
-messages? Why were UDP datagrams chosen to transport SNMP messages?
-
-1.5
-
-(5%) In today's market and its applications, there are many SDN-enabled
-networking devices. What are the preferrable features that an
-SDN-enabled networking device usually has?
-
-1.6
-
-(5%) BGP is a routing protocol used for routing among ISPs. One problem
-that BGP faces is detecting loops in paths. What are the loops? Why
-should loops be avoided? How does BGP detect the loops in paths?
-
-Solve the following network problems and show your work in detail. 2.1
-
-(10%) UDP and TCP use 1's complement for their checksums to detect
-errors. Suppose you have the following 8-bit bytes: 11011001, 01010010,
-11001010, 10100100 and 01011001. a. What is the 1's complement of the
-sum of these 8-bit bytes? Show all the details of your work. b. Why do
-UDP and TCP take the 1's complement of the sum as their checksum,
-instead of the just sum of these bytes? 5/19/25, 17:56
-
-Assignment 2 - Instructions
-
-2 of 3
-
-https://learning.athabascau.ca//content/enforced/16029-co_COMP347_R9/Content/03...
-
-c.  With the 1's complement scheme, how does the receiver detect errors?
-d.  With this checksum scheme, is it possible that any 1-bit error will
-    go undetected? How about a 2-bit error? Explain your answer. 2.2
-
-(20%) The following table is used to compute the shortest path from A to
-all other nodes in a network, according to the link-state algorithm,
-which is better known as Dijkstra's shortest path algorithm.
-
-0
-
-u
-
-2,u
-
-5,u
-
-1,u
-
-∞
-
-∞
-
-1
-
-ux
-
-2,u
-
-4,x
-
-2,x
-
-∞
-
-2
-
-uxy
-
-2,u
-
-3,y
-
-4,y
-
-3
-
-uxyv
-
-3,y
-
-4,y
-
-4
-
-uxyvw
-
-5
-
-uxyvwz
-
-4,y
-
-a.  Interpret the table above in your words: what it is showing and what
-    are each row and each column showing?
-b.  Consider the network shown in the following diagram. With the
-    indicated link costs, use Dijkstra's shortest path algorithm to
-    compute the shortest path from x to all other network nodes. Show
-    how the algorithm works by computing a table like the one above.
-
-2.3
-
-(20%) A router running classless interdomain routing (CIDR) has the
-following entries in its routing table: Address/mask Next hop
-135.46.56.0/22 Interface 0 135.46.60.0/22 Interface 1 192.53.40.0/23
-Router 2 Default Router 3 How does a CIDR router route the packets it
-receives? For each of the following IP addresses, explain what the
-router will do if a packet with that address arrives. a. b. c. d.
-
-2.4
-
-135.46.61.10 135.46.53.16 192.53.40.6 192.53.56.7
-
-(20%) Consider that only a single TCP connection uses a 1 Gbps link,
-which does not bu�er any data. Suppose that this link is the only
-congested link between the sending and receiving hosts. Assume that the
-TCP sender has a huge �le to send to the receiver and the receiver's
-receive bu�er is much larger than the congestion window. Further assume
-that each TCP segment size is 1,500 bytes; the two-way propagation delay
-of this connection is 15 msec; and this TCP connection is always in the
-congestion avoidance phase (ignore slow start).
-
-5/19/25, 17:56
-
-Assignment 2 - Instructions
-
-3 of 3
-
-https://learning.athabascau.ca//content/enforced/16029-co_COMP347_R9/Content/03...
-
-a.  What is the maximum window size (in segments) that this TCP
-    connection can achieve?
-b.  What is the average window size (in segments) and average throughput
-    (in bps) of this TCP connection?
-c.  How long would it take for this TCP connection to reach its maximum
-    window again after recovering from a packet loss?
-d.  Assume we want the 1 Gbps link to bu�er a �nite number of segments
-    and always keep the link busy sending data. How would you choose a
-    bu�er size? Justify your answer.
-
-Submit your completed assignment to Assignment 2 for assessment
-(submission link will be available upon your course contract start
-date).
-
-1.  Once you submit the assignment for grading, your submission is �nal.
-    To resubmit the assignment, you obtain special permission from your
-    instructor.
-2.  Please name your �le using the following template:
-    `<course shortname>`{=html}*\<assignment#\>*`<lastname>`{=html}`<firstname>`{=html}\_`<studentID>`{=html}
-
-Examples:
-
-• • •
-
-COMP101_Assignment1_DoeJane_1234567
-COMP101_Assignment1\_�le1_DoeJane_1234567
-COMP101_FinalAssignment_DoeJane_1234567
-
-Copyright @ Athabasca University All Rights Reserved
-
-5/19/25, 17:56
-
-
diff --git a/assignments/3.md b/assignments/3.md
deleted file mode 100644
index 5317e4e..0000000
--- a/assignments/3.md
+++ /dev/null
@@ -1,152 +0,0 @@
-Assignment 3 - Instructions
-
-1 of 2
-
-https://learning.athabascau.ca//content/enforced/16029-co_COMP347_R9/Content/03...
-
-After completion of Units 6 and 7 20% of your �nal grade
-
-This assignment should be done after you have completed your study of
-Unit 6 and Unit 7. Your assignment must be written in either MS-Word or
-HTML and it must begin with a cover page containing the course number
-and title, assignment number, your name and your student ID, as well as
-the time you spent on the assignment. The �le containing the cover page
-must be named or If you have more than one �le for the assignment, those
-�les and all other �les should be accessible through the �le containing
-the cover page, either directly or indirectly through hyperlinks.
-
-You need to create a root directory or folder named somewhere on the �le
-system of your computer and keep all your work related to the course
-under that directory; for this assignment you need to create a
-subdirectory or subfolder named and put all the necessary �les for the
-assignment under that dedicated subdirectory. When you submit your
-assignment, you must compress the entire subdirectory of in a �le named
-and send the compressed �le for marking. By default, you must answer
-each of the questions in your own words with enough details to show your
-work for your solutions, and Please read the university's academic
-misconduct policy  carefully before you begin the assignment.
-
-1.1
-
-(5%) What is the role of the anchor MSC in GSM networks?
-
-1.2
-
-(5%) What are the main characteristics of LTE radio access networks? How
-does LTE network di�er from previous generations of cellular networks?
-
-1.3
-
-(5%) What does CSMA/CD stand for? How does the protocol work? Explain
-why RTT on an Ethernet LAN is an important parameter for the CSMA/CD
-protocol to work properly.
-
-1.4
-
-(5%) What does CSMA/CA stand for? How does the protocol work? How can
-collisions be avoided in the protocol?
-
-1.5
-
-(5%) What techniques can be used for error-detection and
-error-correction, respectively, on the data link layer?
-
-1.6
-
-(5%) What wireless (Wi-Fi) network standards are used in today's
-industries? What are the characteristics of the link speci�ed in each
-standard?
-
-Solve the following network problems and show your work in detail. 2.1
-
-(15%) For wireless and cellular networks, the space is a shared medium
-for all sending and receiving hosts to use. Among the technologies
-developed to make medium sharing work, a channel partitioning technology
-called code division multiple access (CDMA) is widely used in today's
-wireless and cellular networks. Begin with reading about the simple CDMA
-protocol given in the textbook, and then study more advanced CDMA
-schemes from other sources, including the Internet. Finally, choose one
-CDMA scheme and explain, in your own words, how it works. Describe the
-advantages that CDMA has over other coding schemes, such as TDM and FDM.
-Include in your answer the titles and sources of the articles/documents
-you consulted.
-
-2.2
-
-(15%) Suppose host A has payload 1011 0110 1010 1011 to send to host B,
-and A wants to use a two-dimensional checksum for host B to detect and
-correct any 1-bit error that may occur during the transmission.
-Furthermore, host A wants to minimize the length of the checksum to
-conserve 5/19/25, 17:57
-
-Assignment 3 - Instructions
-
-2 of 2
-
-https://learning.athabascau.ca//content/enforced/16029-co_COMP347_R9/Content/03...
-
-bandwidth of the communication channel. What would the value of the
-checksum �eld be if an even parity scheme is used? Show all your work
-and prove why the checksum you have worked out is the shortest. Prove
-that any 1-bit error can be detected and corrected. 2.3
-
-(20%) Assume a 1 Gbps Ethernet has two nodes, A and B, connected by a
-180 m cable with three repeaters in between, and they each have one
-frame of 1,024 bits to send to each other. Further assume that the
-signal propagation speed across the cable is 2\*10\^8 m/sec;, CSMA/CD
-uses back-o� intervals of multiples of 512 bits; and each repeater will
-insert a store-and-forward delay equivalent to 20-bit transmission time.
-At time t = 0, both A and B attempt to transmit. After the �rst
-collision, A draws K = 0 and B draws K = 1 in the exponential backo�
-protocol after sending the 48 bits jam signal. a. What is the one-way
-propagation delay (including all repeater delays) between A and B in
-seconds? At what time is A's packet completely delivered at B? b. Now
-suppose that only A has a packet to send and that the repeaters are
-replaced with switches. Suppose that each switch has an 8-bit processing
-delay in addition to a store-and-forward delay. At what time, in
-seconds, is A's packet delivered at B? In your calculations for a and b,
-you must include all the delays that occur according to CSMA/CD, and you
-must show the details of your work.
-
-2.4
-
-(10%) Suppose an 802.11 station on a mobile network is con�gured to
-always reserve the channel with the RTS/CTS sequence. At time t = 0, the
-station wants to transmit 1024 bytes of data. All other stations on the
-network are idle at that time. At what time will the station complete
-the transmission? At what time can the station receive the
-acknowledgement?
-
-2.5
-
-(10%) Bluetooth is a widely used wireless communication technology.
-Although it is not covered in detail in this course, you are asked to
-conduct some research and reading on the Internet about Bluetooth
-technology and describe and comment on the format of the Bluetooth
-frame. Focus on its features and limitations. Is there anything in the
-frame format that inherently limits the number of active nodes in a
-network to eight active nodes? Explain.
-
-Submit your completed assignment to Assignment 3 for assessment
-(submission link will be available upon your course contract start
-date).
-
-1.  Once you submit the assignment for grading, your submission is �nal.
-    To resubmit the assignment, you obtain special permission from your
-    instructor.
-2.  Please name your �le using the following template:
-    `<course shortname>`{=html}*\<assignment#\>*`<lastname>`{=html}`<firstname>`{=html}\_`<studentID>`{=html}
-
-Examples:
-
-• • •
-
-COMP101_Assignment1_DoeJane_1234567
-COMP101_Assignment1\_�le1_DoeJane_1234567
-COMP101_FinalAssignment_DoeJane_1234567
-
-Copyright @ Athabasca University All Rights Reserved
-
-5/19/25, 17:57
-
-