22-Elec-B4 Information Technology Networks
Worked solutions to 14 past sittings (2013–2019), 71 questions. Pick a sitting, or start from a topic below.
- December 2019
- December 2018
- May 2018
- December 2017
- May 2017
- December 2016
- May 2016
- December 2015
- May 2015
- December 2014
- May 2014
- December 2013
- May 2013
- Undated paper
Topics across the sittings
Topics that come up in more than one sitting, taken from the headings of our worked solutions. A topic counts once per sitting.
- Cellular Telephony (10 sittings): December 2018 Q2 · May 2018 Q1 · May 2017 Q1 · December 2016 Q2 · December 2015 Q4 · May 2015 Q2 · December 2014 Q1 · May 2014 Q2 · December 2013 Q2 · Undated paper Q1
- Layered architecture (10 sittings): May 2018 Q5 · December 2017 Q3 · May 2017 Q3 · December 2016 Q4 · May 2016 Q2 · May 2015 Q4 · May 2014 Q4 · December 2013 Q5 · May 2013 Q4 · Undated paper Q5
- Transport Layer Protocols (9 sittings): December 2019 Q1 · December 2018 Q3 · May 2018 Q2 · May 2017 Q2 · May 2016 Q5 · December 2014 Q5 · December 2013 Q4 · May 2013 Q2 · Undated paper Q3
- Medium access control protocols (7 sittings): December 2018 Q4 · May 2017 Q4 · May 2016 Q3 · December 2015 Q2 · May 2015 Q5 · May 2014 Q3 · May 2013 Q5
- WiFi (6 sittings): December 2019 Q4 · December 2018 Q5 · May 2018 Q4 · May 2016 Q4 · December 2015 Q1 · December 2013 Q1
- Circuit Switching (5 sittings): December 2018 Q1 · December 2017 Q5 · December 2016 Q1 · May 2015 Q1 · May 2014 Q1
- IP Packet Routing (5 sittings): December 2019 Q3 · December 2017 Q1 · May 2017 Q5 · May 2016 Q1 · December 2014 Q4
- Packet Switching (5 sittings): December 2018 Q1 · December 2017 Q5 · December 2016 Q1 · May 2015 Q1 · May 2014 Q1
- Bluetooth wireless protocols (4 sittings): December 2018 Q5 · May 2016 Q4 · December 2015 Q1 · December 2013 Q1
- Shortest-path routing (4 sittings): May 2018 Q3 · December 2015 Q5 · May 2014 Q5 · Undated paper Q4
- Transport layer (4 sittings): December 2017 Q2 · December 2016 Q3 · December 2015 Q3 · May 2015 Q3
- Shortest-Path Routing by Dijkstra's Algorithm (3 sittings): December 2019 Q5 · December 2017 Q4 · December 2016 Q5
- Bluetooth (2 sittings): December 2019 Q4 · May 2018 Q4
- Data link layer (2 sittings): December 2014 Q3 · May 2013 Q6
- FDMA Capacity (2 sittings): December 2018 Q2 · May 2018 Q1
Questions by sitting
December 2019
- Question 1: Transport Layer Protocols
- Question 2: LTE, OFDM and Duplexing
- Question 3: IP Packet Routing
- Question 4: WiFi and Bluetooth
- Question 5: Shortest-Path Routing by Dijkstra's Algorithm
December 2018
- Question 1: Packet Switching and Circuit Switching
- Question 2: Cellular Telephony — OFDM Orthogonality, PRB Rate and FDMA Capacity
- Question 3: Transport Layer Protocols
- Question 4: Medium Access Control Protocols
- Question 5: WiFi and Bluetooth Wireless Protocols
May 2018
- Question 1: Cellular Telephony — OFDM Orthogonality, PRB Peak Rate and FDMA Capacity
- Question 2: Transport Layer Protocols — TCP, UDP and Congestion Control
- Question 3: Shortest-Path Routing — Dijkstra's Algorithm
- Question 4: WiFi and Bluetooth — Piconets, Frequency Hopping and Medium Access
- Question 5: Layered Architecture — The OSI Reference Model
December 2017
- Question 1: IP Packet Routing
- Question 2: The Transport Layer
- Question 3: Layered Architecture
- Question 4: Shortest-Path Routing by Dijkstra's Algorithm
- Question 5: Packet Switching and Circuit Switching
May 2017
- Question 1: Cellular Telephony
- Question 2: Transport Layer Protocols
- Question 3: Layered Architecture
- Question 4: Medium Access Control Protocols
- Question 5: IP Packet Routing
December 2016
- Question 1: Packet Switching and Circuit Switching
- Question 2: Cellular Telephony
- Question 3: The Transport Layer
- Question 4: Layered Architecture
- Question 5: Shortest-Path Routing by Dijkstra's Algorithm
May 2016
- Question 1: IP packet routing
- Question 2: Layered architecture
- Question 3: Medium access control protocols
- Question 4: WiFi and Bluetooth wireless protocols
- Question 5: Transport layer protocols
December 2015
- Question 1: WiFi and Bluetooth wireless protocols
- Question 2: Medium access control protocols
- Question 3: The transport layer
- Question 4: Cellular telephony
- Question 5: Shortest-path routing
May 2015
- Question 1: Packet switching and circuit switching
- Question 2: Cellular telephony
- Question 3: The transport layer
- Question 4: Layered architecture
- Question 5: Medium access control protocols
December 2014
- Question 1: Cellular Telephony
- Question 2: Shortest-Path Routing by Dijkstra’s Algorithm
- Question 3: Data Link Layer and Peer-to-Peer Protocols
- Question 4: IP Packet Routing
- Question 5: Transport Layer Protocols
May 2014
- Question 1: Packet switching and circuit switching
- Question 2: Cellular telephony
- Question 3: Medium access control protocols
- Question 4: Layered architecture
- Question 5: Shortest-path routing
December 2013
- Question 1: WiFi and Bluetooth wireless protocols
- Question 2: Cellular telephony
- Question 3: Medium access control
- Question 4: Transport layer protocols
- Question 5: Layered architecture
May 2013
- Question 1: The Internet Protocol, versions 4 and 6
- Question 2: Transport layer protocols
- Question 3: Shortest-path routing by Dijkstra’s algorithm
- Question 4: Layered architecture and the OSI model
- Question 5: Medium access control protocols
- Question 6: The data link layer and peer-to-peer protocols
Undated paper
- Question 1: Cellular Telephony — OFDM Symbols, Resource Blocks and Frequency Re-use
- Question 2: Medium Access Control — CSMA/CD, ALOHA and the Wireless Terminal Problems
- Question 3: Transport Layer Protocols — TCP Congestion Control and UDP
- Question 4: Shortest-Path Routing — Bellman-Ford from Node H
- Question 5: Layered Architecture — the OSI Seven-Layer Model