Professor Yashar Ganjali Department of Computer Science University of Toronto [email protected] http://www.cs.toronto.edu/~yganjali
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Professor Yashar GanjaliDepartment of Computer ScienceUniversity of Toronto
[email protected]://www.cs.toronto.edu/~yganjali
CSC 458/CSC 2209 – Computer Networks 2University of Toronto – Fall 2019
Final Review• Final exam logistics• Review of principles• Where next?
CSC 458/CSC 2209 – Computer Networks 3University of Toronto – Fall 2019
Final Exam Logistics• Examination aids allowed:
� Non-programmable calculators� 1 double-sided page of notes
• No cell phones allowed
CSC 458/CSC 2209 – Computer Networks 4University of Toronto – Fall 2019
Final Exam� Part I – Multiple choice
� 1 correct answer for each question� Part II – Definitions
� 4-5 sentences each• Part III – Longer Questions
� Might need more time than Part I & II� Still very simple problems� Similar to midterm and problem sets
CSC 458/CSC 2209 – Computer Networks 5University of Toronto – Fall 2019
Final Review• Final exam logistics• Review of principles• Where next?
CSC 458/CSC 2209 – Computer Networks 6University of Toronto – Fall 2019
Review of Basic Concepts
Network
Link
Transport
Application
Presentation
Session
Transport
Network
Link
Physical
The 7-layer OSI Model The 4-layer Internet model
ApplicationFTP
ASCII/Binary
IP
TCP
Ethernet
CSC 458/CSC 2209 – Computer Networks 7University of Toronto – Fall 2019
App
OS
R2 R3
R4
R1 R5
Ethernet
“A” U of T “B” Stanford
Ethernet
App
OS
1
234
67
20
191817
5
910
81213
11 1516
14
Example: FTP over the InternetUsing TCP/IP and Ethernet
CSC 458/CSC 2209 – Computer Networks 8University of Toronto – Fall 2019
Review of Basic Principles� Basic ideas:
� Packet switching, statistical multiplexing, layering,� Link Layer:
� Channel capacity, encoding and clock recovery, error detection/correction, Ethernet switching
� Network Layer:� Fragmentation, Bellman-Ford, Dijkstra, addresses and
lookups, BGP, IGP
CSC 458/CSC 2209 – Computer Networks 9University of Toronto – Fall 2019
Review of Basic Principles – Cont’d� Transport Layer:
� Flow control, congestion control, retransmissions and sliding windows, congestion avoidance (RED)
� Miscellaneous:� Queuing mechanisms, middleboxes, peer-to-peer,
software-defined networking, and network security
CSC 458/CSC 2209 – Computer Networks 10University of Toronto – Fall 2019
Final Review• Final exam logistics• Review of principles• Where next?
CSC 458/CSC 2209 – Computer Networks 11University of Toronto – Fall 2019
Where Next?� Courses to take:
� CSC2203: Packet Switch & Network Architectures� CSC2229: Software-Defined Networking� CSC309: Programming on the Web� CSC2231: Special Topics in Computer Systems
� Online Social Networking Systems � Internet Systems and Services
� CSC2206: Systems Modeling and Analysis� CSC2221: Theory of Distributed Computing� CSC2415: Advanced Topics in Distributed Computing� CSC2720: Systems Thinking for Global Problems
� Individual study courses � CSC494 and CSC495
CSC 458/CSC 2209 – Computer Networks 12University of Toronto – Fall 2019
Thank You!
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