All Educational Materials for Alex Snoeren

UCSDCSE 123Alex SnoerenFall

CSE 123 Study Guide - Comprehensive Final Exam Guide - Routing, Transmission Control Protocol, Dest

55 Page
20 Nov 2018
This class in one slide: protocols & layering. Agree on how to describe a host, application, network, etc: switching & routing. Deciding how to get fro
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UCSDCSE 123Alex SnoerenFall

CSE 123 Study Guide - Fall 2018, Comprehensive Midterm Notes - Transmission Control Protocol, Memory Bandwidth, Master Sergeant

12 Page
12 Oct 2018
This class in one slide: protocols & layering. Agree on how to describe a host, application, network, etc: switching & routing. Deciding how to get fro
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UCSDFall

Quiz 4

8 Apr 2019
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Final Exam

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8 Apr 2019
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8 Apr 2019
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CSE 221 Final Exam Winter

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31 Jan 2019
There are five questions in this examination, each worth 20 points. You have three hours to complete this examination. What a system designer leaves ou
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CSE 221 Final Exam Fall

6 Page
31 Jan 2019
One operating system to bring them all and in the machine bind them. Three systems for the laptops under the sky, Seven for the personal computers in t
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CHEM 6B Lecture Notes - Lecture 2: Formaldehyde, Horse Length, Chemical Formula

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9 Oct 2019
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CHEM 6B Lecture Notes - Lecture 1: Conversion Of Units, Molecular Mass, Chemical Formula

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9 Oct 2019
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Final Exam

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8 Apr 2019
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Exam 1

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8 Apr 2019
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UCSDCSE 123Alex SnoerenFall

CSE 123 Lecture Notes - Lecture 27: Source Routing, Hypertext Transfer Protocol, Tcp Tuning

5 Page
7 Dec 2018
| ethernet | ip | tcp | http | payload. Know the fields of each header, how to fragment, etc. Arbitrate which nodes can send frames at any point in tim
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UCSDCSE 123Alex SnoerenFall

CSE 123 Lecture Notes - Lecture 26: Carrier-Sense Multiple Access, Media Access Control, Frequency-Division Multiple Access

3 Page
5 Dec 2018
Bridges - different than what we know about bridges! We learned that bridges were store-and-forward devices that speak the same layer. These bridges ar
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UCSDCSE 123Alex SnoerenFall

CSE 123 Lecture 8: L8 10/15/18

3 Page
15 Oct 2018
All nodes think they"re the root initially . Every bridge has a # when they"re manufactured (globally unique!) Each bridge sends periodic configuration
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UCSDCSE 123Alex SnoerenFall

CSE 123 Lecture Notes - Lecture 24: Alohanet, Bit Rate, Frequency-Division Multiple Access

3 Page
28 Nov 2018
Need to share media w/ multiple nodes (n) Bitrate of the link is split across channels! No one sender cannot achieve full bit rate of the medium! Can o
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UCSDCSE 123Alex SnoerenFall

CSE 123 Lecture Notes - Lecture 23: Intersymbol Interference, Bandlimiting, Baud

3 Page
26 Nov 2018
For any bandlimited channel, it has a max freq f. Reality: you cannot change that freq very fast! (depends on how high it is!) Attempting to signal too
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UCSDCSE 123Alex SnoerenFall

CSE 123 Lecture Notes - Lecture 22: Demodulation, Background Noise, Error Detection And Correction

3 Page
21 Nov 2018
Modem (modulator demodulator): communicating with computers over old phone lines! Take input stream of bits (digital data) Modulate some physical media
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UCSDCSE 123Alex SnoerenFall

CSE 123 Lecture Notes - Lecture 25: Ieee 802.3, Master Sergeant, Ieee 802.11

3 Page
3 Dec 2018
Even w/ csma there can still be collisions! Requires a minimum frame size ( acquiring the medium ) Ensures sender sticks around and listens long enough
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UCSDCSE 123Alex SnoerenFall

CSE 123 Lecture Notes - Lecture 3: Bit Stuffing, Hamming Distance, Clock Drift

2 Page
3 Oct 2018
Stuffer will stick a dle in front of stx/etx. The more fine-grained, the less it"ll work! Prefix w/ another special char, dle (data-link escape) Exists
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UCSDCSE 123Alex SnoerenFall

CSE 123 Lecture Notes - Lecture 1: Sliding Window Protocol, Link Layer, Master Sergeant

2 Page
3 Oct 2018
P1 due 6pm oct, 29th (right before midterm!) End-to-end argument - functionality should be implemented at a lower layer iff it can be correctly and com
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UCSDCSE 123Alex SnoerenFall

CSE 123 Lecture 1: L1 9/29/18

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28 Sep 2018
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UCSDCSE 123Alex SnoerenFall

CSE 123 Study Guide - Comprehensive Final Exam Guide - Routing, Transmission Control Protocol, Dest

55 Page
20 Nov 2018
This class in one slide: protocols & layering. Agree on how to describe a host, application, network, etc: switching & routing. Deciding how to get fro
View Document
UCSDCSE 123Alex SnoerenFall

CSE 123 Study Guide - Fall 2018, Comprehensive Midterm Notes - Transmission Control Protocol, Memory Bandwidth, Master Sergeant

12 Page
12 Oct 2018
This class in one slide: protocols & layering. Agree on how to describe a host, application, network, etc: switching & routing. Deciding how to get fro
View Document
UCSDCSE 123Alex SnoerenFall

CSE 123 Lecture Notes - Lecture 27: Source Routing, Hypertext Transfer Protocol, Tcp Tuning

5 Page
7 Dec 2018
| ethernet | ip | tcp | http | payload. Know the fields of each header, how to fragment, etc. Arbitrate which nodes can send frames at any point in tim
View Document
UCSDCSE 123Alex SnoerenFall

CSE 123 Lecture Notes - Lecture 26: Carrier-Sense Multiple Access, Media Access Control, Frequency-Division Multiple Access

3 Page
5 Dec 2018
Bridges - different than what we know about bridges! We learned that bridges were store-and-forward devices that speak the same layer. These bridges ar
View Document
UCSDCSE 123Alex SnoerenFall

CSE 123 Lecture 8: L8 10/15/18

3 Page
15 Oct 2018
All nodes think they"re the root initially . Every bridge has a # when they"re manufactured (globally unique!) Each bridge sends periodic configuration
View Document
UCSDCSE 123Alex SnoerenFall

CSE 123 Lecture Notes - Lecture 24: Alohanet, Bit Rate, Frequency-Division Multiple Access

3 Page
28 Nov 2018
Need to share media w/ multiple nodes (n) Bitrate of the link is split across channels! No one sender cannot achieve full bit rate of the medium! Can o
View Document
UCSDCSE 123Alex SnoerenFall

CSE 123 Lecture Notes - Lecture 23: Intersymbol Interference, Bandlimiting, Baud

3 Page
26 Nov 2018
For any bandlimited channel, it has a max freq f. Reality: you cannot change that freq very fast! (depends on how high it is!) Attempting to signal too
View Document
UCSDCSE 123Alex SnoerenFall

CSE 123 Lecture Notes - Lecture 22: Demodulation, Background Noise, Error Detection And Correction

3 Page
21 Nov 2018
Modem (modulator demodulator): communicating with computers over old phone lines! Take input stream of bits (digital data) Modulate some physical media
View Document
UCSDCSE 123Alex SnoerenFall

CSE 123 Lecture Notes - Lecture 25: Ieee 802.3, Master Sergeant, Ieee 802.11

3 Page
3 Dec 2018
Even w/ csma there can still be collisions! Requires a minimum frame size ( acquiring the medium ) Ensures sender sticks around and listens long enough
View Document
UCSDCSE 123Alex SnoerenFall

CSE 123 Lecture Notes - Lecture 3: Bit Stuffing, Hamming Distance, Clock Drift

2 Page
3 Oct 2018
Stuffer will stick a dle in front of stx/etx. The more fine-grained, the less it"ll work! Prefix w/ another special char, dle (data-link escape) Exists
View Document

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UCSDCSE 123Alex SnoerenFall

CSE 123 Lecture Notes - Lecture 27: Source Routing, Hypertext Transfer Protocol, Tcp Tuning

5 Page
7 Dec 2018
| ethernet | ip | tcp | http | payload. Know the fields of each header, how to fragment, etc. Arbitrate which nodes can send frames at any point in tim
View Document
UCSDCSE 123Alex SnoerenFall

CSE 123 Lecture Notes - Lecture 26: Carrier-Sense Multiple Access, Media Access Control, Frequency-Division Multiple Access

3 Page
5 Dec 2018
Bridges - different than what we know about bridges! We learned that bridges were store-and-forward devices that speak the same layer. These bridges ar
View Document
UCSDCSE 123Alex SnoerenFall

CSE 123 Lecture Notes - Lecture 25: Ieee 802.3, Master Sergeant, Ieee 802.11

3 Page
3 Dec 2018
Even w/ csma there can still be collisions! Requires a minimum frame size ( acquiring the medium ) Ensures sender sticks around and listens long enough
View Document
UCSDCSE 123Alex SnoerenFall

CSE 123 Lecture Notes - Lecture 24: Alohanet, Bit Rate, Frequency-Division Multiple Access

3 Page
28 Nov 2018
Need to share media w/ multiple nodes (n) Bitrate of the link is split across channels! No one sender cannot achieve full bit rate of the medium! Can o
View Document
UCSDCSE 123Alex SnoerenFall

CSE 123 Lecture Notes - Lecture 23: Intersymbol Interference, Bandlimiting, Baud

3 Page
26 Nov 2018
For any bandlimited channel, it has a max freq f. Reality: you cannot change that freq very fast! (depends on how high it is!) Attempting to signal too
View Document
UCSDCSE 123Alex SnoerenFall

CSE 123 Lecture Notes - Lecture 22: Demodulation, Background Noise, Error Detection And Correction

3 Page
21 Nov 2018
Modem (modulator demodulator): communicating with computers over old phone lines! Take input stream of bits (digital data) Modulate some physical media
View Document
UCSDCSE 123Alex SnoerenFall

CSE 123 Study Guide - Comprehensive Final Exam Guide - Routing, Transmission Control Protocol, Dest

55 Page
20 Nov 2018
This class in one slide: protocols & layering. Agree on how to describe a host, application, network, etc: switching & routing. Deciding how to get fro
View Document
UCSDCSE 123Alex SnoerenFall

CSE 123 Lecture Notes - Lecture 21: Tcp Congestion Control, Flatline, Bandwidth Management

3 Page
19 Nov 2018
Need to span 6+ orders of magnitude! No engineering class where you can learn about an approach that will span this much! On new connection, or after t
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UCSDCSE 123Alex SnoerenFall

CSE 123 Lecture Notes - Lecture 20: Network Congestion, Minimax, Lincoln Near-Earth Asteroid Research

4 Page
17 Nov 2018
Should not be faster than the sender"s share . Should not be faster than the network can process . Cc & bandwidth allocation are separate ideas, but fr
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UCSDCSE 123Alex SnoerenFall

CSE 123 Lecture Notes - Lecture 19: Token Bucket, Fair Queuing, Minimax

3 Page
14 Nov 2018
1 udp (10 mbps) and 31 tcps sharing a 10 mbps line. All 32 senders would like to send 10 mbps (i. e the entire capacity of the link!) More demand (32 x
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