Fifth Semester · BCA 301
Computer Network Notes
A dedicated BCA World study page for this subject, aligned to the TU BCA 2025 curriculum units.
How to study this subject
For each unit, learn the definition, understand the process, practise one example, and finish by explaining the concept in your own words. Use the model questions after completing the unit notes.
Unit-by-unit notes
01
Data communication, network models, signals, and transmission media
Revise the definition, components, workflow, common examples, and practical use of data communication, network models, signals, and transmission media. Relate it to a small problem or case study from Computer Network.
- Define the key terms and identify the main components.
- Draw or describe the workflow, architecture, formula, or process where relevant.
- Connect the idea to a practical BCA example and revise common advantages or limitations.
02
Data-link protocols, framing, error control, and LAN technologies
Revise the definition, components, workflow, common examples, and practical use of data-link protocols, framing, error control, and lan technologies. Relate it to a small problem or case study from Computer Network.
- Define the key terms and identify the main components.
- Draw or describe the workflow, architecture, formula, or process where relevant.
- Connect the idea to a practical BCA example and revise common advantages or limitations.
03
IP addressing, subnetting, routing, and internetworking
Revise the definition, components, workflow, common examples, and practical use of ip addressing, subnetting, routing, and internetworking. Relate it to a small problem or case study from Computer Network.
- Define the key terms and identify the main components.
- Draw or describe the workflow, architecture, formula, or process where relevant.
- Connect the idea to a practical BCA example and revise common advantages or limitations.
04
Transport protocols, congestion control, and socket concepts
Revise the definition, components, workflow, common examples, and practical use of transport protocols, congestion control, and socket concepts. Relate it to a small problem or case study from Computer Network.
- Define the key terms and identify the main components.
- Draw or describe the workflow, architecture, formula, or process where relevant.
- Connect the idea to a practical BCA example and revise common advantages or limitations.
05
Application services, wireless networks, administration, and security
Revise the definition, components, workflow, common examples, and practical use of application services, wireless networks, administration, and security. Relate it to a small problem or case study from Computer Network.
- Define the key terms and identify the main components.
- Draw or describe the workflow, architecture, formula, or process where relevant.
- Connect the idea to a practical BCA example and revise common advantages or limitations.
Model questions for BCA 301
Short answerDefine data communication, network models, signals, and transmission media and mention two important uses.
Define data communication, network models, signals, and transmission media and mention two important uses. Answer using a definition, structured explanation, relevant example, and conclusion.
Long answerExplain data-link protocols, framing, error control, and lan technologies with a suitable diagram, example, or step-by-step method.
Explain data-link protocols, framing, error control, and lan technologies with a suitable diagram, example, or step-by-step method. Answer using a definition, structured explanation, relevant example, and conclusion.
Practical / applicationApply ip addressing, subnetting, routing, and internetworking to solve a small Computer Network problem. State your assumptions and conclusion.
Apply ip addressing, subnetting, routing, and internetworking to solve a small Computer Network problem. State your assumptions and conclusion. Answer using a definition, structured explanation, relevant example, and conclusion.