General information about the Computer Networks (CN) course, Computer Engineering degree

• Excerpt from the syllabus for academic year 2024
• Official calendar for academic year 2023-24

Homework for academic year 2021

• Reference solution to WH1

• Homework assignment #2

Weekly Homework while on lockdown in year 2020 (For reference only))

• Weekly Homework 1 (Publ. 19-March-2020; return by 26-March-2020)
• Reference solution to WH1

• Weekly Homework 2 (Publ. 26-March-2020; return by 31-March-2020)
• Reference solution to WH2

• Weekly Homework 3 (Publ. 3-April-2020; return by 17-April-2020)
• Reference solution to WH3

• WH 4 - Theory (Publ. 17-April-2020; return by 30-April-2020)
• Reference solution to WH4

• WH 4 - Practice (Publ. 24-April-2020; return by 30-April-2020)

• WH 5 - Theory (Publ. 2-May-2020; return by 14-May-2020)
• Reference solution to WH5 - Theory

• WH 5 - Practice (Publ. 3-May-2020; return by 14-May-2020)
• WH 5 - Practice dgramPFPACKETSend.c

• WH 6 - (Publ. 15-May-2020; return by 21-May-2020)
• Reference solution to WH6

• WH 7 - Theory - (Publ. 22-May-2020; return by 28-May-2020)

• Reference solution to WH7-Theory

• WH 7 - Practice - (Publ. 21-May-2020; return by 28-May-2020)

• WH 8 Solved exercise about Longest Prefix Match

Weekly Questioannaires and Solutions from past years (For reference only))

• Questionnaire 1
• Questionnaire 1 Reference Solution
• Questionnaire 2
• Questionnaire 2 Reference Solution
• Questionnaire 3
• Questionnaire 3 Reference Solution
• Questionnaire 4 (Shannon etc.)
• Questionnaire 5 (Datalink-Ethernet, etc.)


• Questionnaire 5 (Datalink-Ethernet/2024)
• Ref. solution to Questionnaire no. 4 (Shannon, etc.)
• Solution to Questionnaire 5 (Datalink-Ethernet, etc.)
• Questionnaire about Error detection AND SOLUTION
• Questionnaire about Exp. Backoff and Switches AND SOLUTION
• Questionnaire about the Spanning Tree Protocol and Intro to IP AND SOLUTION
• Questionnaire about IP forwarding and IP fragmentation
• Questionnaire about IP numbering and IP routing

Reference solutions to selected Term Exams and Exam Reviews

• Simple protocol stacks from Wireshark trace(Publ. 20/jun/2020)
• Review session for Term Exam applicable to CN·2019 (Publ. 7/March/2019)
• Exam 1, reference solution (2018; Please, see a correction to exercise on the next line))
• Correction to exercise no. 2 from Exam 1, (2018)
• Exam 1, reference solution (2018)
• Reference solution Term Exam 2 (2018)

CN Pro practice 2019

• CNPro homework year 2019 (Published on May 7th 2019 00:50)

CN Pro practice 2023

• CNPro homework year 2023 (Published on May 7th 2023)

CN Pro practical 2024

• CNPro homework year 2024 (Published on 11th-June-2024)

Class Presentations

• Chapter 1: Conceptual Basis

  • Intro. Inform. Technology and English Vocabulary
  • Chapter 1, section 1
  • Chapter 1, section 2
  • Chapter 1, section 3
  • Chapter 1, section 4 (Updated 19-03-2020)
  • Chapter 1, section 5 (Updated 10-04-2024)

• Chapter 2: Protocols for Direct Links and Broadcast Multiple Access

  • 1. Direct Link Protocols (Upd. 27-04-2022)
  • 2. Shared Medium Ethernet introd.(Upd. 27-04-2022)
  • 3. CSMA/CD + Exp. Backoff + Binomial Dist. (Upd. 10-05-2023)

• Chapter 3: LAN Switching

  • Chapter 3-1: Ethernet switching
  • Chapter 3-2: Spanning Tree Protocol

• Chapter 4: Internetworking with IP

  • IP Addressing and Forwarding (Upd. 27/May/24)
  • Intro Routing/OSPF

• Chapter 5: End-to-end protocols

Lab practices

• Guidelines for composing Lab Books in 2022
  

• Practice no. 0 (Year 2022)

  Checking remote access to Lab B6 and basic network commands
  

• Practice no. 1

  Network Interfaces ( 2024! )
  Network Interfaces and Protocol Stacks(2023!!!)
  Java compiler and JVM check program
  gcc C compiler check program
  

• Practice no. 2

  Basic LAN and localhost (2024)
  Homework #1 for Lab Book
  

• Practice no. 3

  ICMP Echo/Echo Reply tcpdump trace analysis(2024)
  Intro RemLab; Wol and tcpdump (2023)
  

• Practice no. 3.1(2023)

  Intro. to PF_PACKET Sockets
  Sending with PF_PACKET sockets
  

• Practice no. 3.2 (13/April/2023)

  Send/receive with pf packet sockets
  Sending with PF_PACKET sockets
  Receiving with PF_PACKET sockets
  

• Practice no. 4

  ICMP Time Exceeded in Transit; traceroute utility (2024)
  Introduction to LAN Switching and 802.1D (2023)
  

Practice no. 4.1 (2024)

Intro. to PF_PACKET Sockets (Lab presentation)
Sending with PF_PACKET sockets (Practical's script)
C source code to broadcast send program


• Practice no. 5 (ARP for year 2024)

  Script for practice on ARP (2024)
  Ancillary doc: Technical information on ARP
  Ancillary doc: Summary presentation about ARP, ICMP and DHCP protocols
  Ancillary exercise: Simple ARP packet analysis (2023)
  

• Practice no. 6 (Week #21 / May 2024)

  Essential IP configs(Use as base doc; complement with the ensuing doc)
  Internetwork for 2024
  

• Practice no. 7 (Week #22 (2024))

  Script to IP/LPM practical (2024)
  
  Past internetwork (2018)
  Simple Internetwork based on Linux (2023)
  Simple Internetwork based on Linux (2023)
  Intenetwork diagram and params (2023)
  

Complementary Notes (Theory and problems, 2017), Exam Reference Solutions other recommended books

• B1, problem resolution class (6-May-2022)


• Term 2 exercises and solutions(1-Jul-2022)


• Fourier Transform animation


• Description of Term Exam 1 (2016) and Questions submitted by students in 2015 and in 2016


• Chapter 1: Brief notes on basic network performance and solved exercises (V1.4, updated 27-march-2017)


• Chapter 3: Notes on CIDR/VLSM IP partitioning



• CN 2014 Term exam solutions

  Ex1 solution
  Ex2 solution
  Ex3 solution
  Ex4 solution
  Ex5 solution



• CN 2013 Solutions to Term Exam

  [ Reference solutions to CN term exams of 2013 ]



• CN 2019 Term Exam 1

  CN 2019 Term Exam 1

  CN 2019 Term Exam 2

  CN 2019 Term Exam 2, supplementary instance

  CN 2019 Handwritten example about Spanning Tree

  Spanning Tree example

  CN 2019 Handwritten example about IP address block partitioning and numbering

  IP address block partitioning

  CN 2019 Handwritten example about Dijkstra's Shortest Path Tree

  Fwd Search algorithm



• Computer Networks book from UOC (Unversitat Oberta de Catalunya, in Spanish)

  Redes de Computadores