Course module
Computer Networks, TCP/IP & Network Security — DSSSB TGT Computer Science 2026 Section B
- Lessons
- 241
- Duration
- 21 hr 5 min
- PYQs
- 339
- Practice
- 13
11% of this course's PYQ weight is covered in this module.
Syllabus index
Lessons in this module
Introduction to CN
Basics & Criteria
Modes & Connections
Network Topologies
Types of Networks
Switching Techniques
Transmission Media
OSI Model & Layers
- OSI Models & LayersPdf
- Basics of Open System Interconnection OSI modelDrm Video
- Working of Open System Interconnection OSI modelDrm Video
- Basics of Physical Layer with functionality and dutiesDrm Video
- Data Link Layer duties, services and functionalityDrm Video
- Network Layer duties, services and functionalityDrm Video
- Transport Layer duties, services and functionalityDrm Video
- Session Presentation Application Layer duties, servicesDrm Video
Data Communication
DLL: Flow Control
Basics & Delay Analysis
Stop-and-Wait ARQ
Go-Back-N Protocol
Selective Repeat ARQ
DLL: Access Control
DLL Overview & MAC
ALOHA Protocols
CSMA/CA (Wireless)
Controlled Access
DLL: Error Control
Basics & Hamming Dist
- Basics & Hamming DistPdf
- Types of Error - Single Bit Error - Burst ErrorDrm Video
- Idea of Redundancy for Error DetectionDrm Video
- Idea of Block Coding for Error DetectionDrm Video
- Basics of Hamming DistanceDrm Video
- Minimum Hamming Distance for Error DetectionDrm Video
- Minimum Hamming Distance for Error Detection and CorrectionDrm Video
Linear Block Codes
Data Link Layer - Ethernet
Overview and Evolution of Ethernet – IEEE 802.3
Ethernet Frame Format – Preamble, SFD
Manchester Encoding – G.E. Thomas, IEEE, and Differential Manchester Schemes
Net Layer: IPv4 & Proto
Net Layer & IPv4 Basics
Net Layer: IP Addressing
Transport Layer Services
Services, Ports & UDP/TCP
TCP Header & Fields
- TCP Headeers and FieldsPdf
- TCP Header-Source-Destination Port AddressDrm Video
- TCP Header-Sequence Number-Acknowledgement NumberDrm Video
- Idea of Wrap-Around TimeDrm Video
- TCP Header-Header Length FieldDrm Video
- TCP Header-Check Sum FieldDrm Video
- TCP Header-Window Size FieldDrm Video
- TCP Header-Urgent Pointer FieldDrm Video
- TCP Header-Control FlagsDrm Video
- Option Field in TCP HeaderDrm Video
Conn. Mgmt & Reliability
TCP State Transition Diag
TL: Congestion & UDP
Congestion Control Policy
Application Layer
Email: SMTP, POP & IMAP
WWW Basics & Cookies
HTTP Protocol
FTP, DNS & Telnet
PPP, TCP/IP & VoIP Protocols
Mobile Communication Protocols
Introduction to Web Services
Hardware basics
Repeater, Hub, Bridge & Switch
Router & Gateway
Miscellaneous Topics
Network Access Technologies
Network Security
Basics of Network Security
Cryptography
Society, Law & Ethics
Cyber Crime
Cyber Safety and Malware
Module lessons
Previous-year questions
PYQ collectionPYQ Questions17 questionsPYQ collectionPYQ Questions10 questionsPYQ collectionPYQ Questions21 questionsPYQ collectionPYQ Questions15 questionsPYQ collectionPYQ Questions10 questionsPYQ collectionPYQ Questions16 questionsPYQ collectionPYQ Questions21 questionsPYQ collectionPYQ Questions110 questionsPYQ collectionPYQ Questions24 questionsPYQ collectionPYQ Questions24 questionsPYQ collectionPYQ Questions1 questionsPYQ collectionPYQ Questions4 questionsPYQ collectionPYQ Questions5 questionsPYQ collectionPYQ Questions3 questionsPYQ collectionPYQ Questions1 questionsPYQ collectionPYQ Questions3 questionsPYQ collectionPYQ Questions2 questionsPYQ collectionPYQ Questions2 questionsPYQ collectionPYQ Questions11 questionsPYQ collectionPYQ Questions9 questionsPYQ collectionPYQ Questions2 questionsPYQ collectionPYQ Questions3 questionsPYQ collectionPYQ Questions14 questionsPYQ collectionPYQ Questions1 questionsPYQ collectionPYQ Questions2 questionsPYQ collectionPYQ Questions3 questionsPYQ collectionPYQ Questions6 questionsPYQ collectionPYQ Questions10 questionsPYQ collectionPYQ Questions16 questionsPYQ collectionPYQ Questions6 questionsPYQ collectionPYQ Questions6 questionsPYQ collectionPYQ Questions9 questionsPYQ collectionPYQ Questions1 questionsPYQ collectionPYQ Questions10 questionsPYQ collectionPYQ Questions13 questionsPYQ collectionPYQ Questions5 questionsPYQ collectionPYQ Questions11 questionsPYQ collectionPYQ Questions20 questionsPYQ collectionPYQ Questions5 questionsPYQ collectionPYQ Questions1 questionsPYQ collectionPYQ Questions6 questionsPYQ collectionPYQ Questions61 questionsPYQ collectionPYQ Questions7 questionsPYQ collectionPYQ Questions8 questionsPYQ collectionPYQ Questions8 questionsPYQ collectionPYQ Questions23 questionsPYQ collectionPYQ Questions1 questionsPYQ collectionPYQ Questions1 questionsPYQ collectionPYQ Questions8 questionsPYQ collectionPYQ Questions8 questionsPYQ collectionPYQ Questions4 questionsPYQ collectionPYQ Questions15 questionsPYQ collectionPYQ Questions35 questionsPYQ collectionPYQ Questions6 questionsPYQ collectionPYQ Questions14 questionsPYQ collectionPYQ Questions20 questionsPYQ collectionPYQ Questions339 questions
Explore the course
- About Course
- Digital Electronics / Boolean Logic
- Computer Fundamentals, IT Basics & Architecture
- Operating Systems & Linux
- Data Base Management System
- Python Language
- Internet & Web Technologies
- Emerging Trends
- Software Engineering
- Programming, Data Structures, OOP & Java
- Teaching Methodology
- Computer Graphics, Multimedia & Mobile Computing
- Basis of Physics
- Part-II (Descriptive)
- Design & Analysis of Algorithms
- Statistical Techniques
- Interpolation - DI
- Mathematics - I, II, III, IV
- Previous Year Paper
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