Course module
Computer Networks & Cybersecurity — ISRO Scientist/Engineer 'SC'
- Lessons
- 306
- Duration
- 25 hr 6 min
- PYQs
- 143
- Practice
- 478
14% 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
Signals & Metrics
Channel Capacity Limits
Encoding & Modulation
DLL: Access Control
DLL Overview & MAC
ALOHA Protocols
CSMA/CA (Wireless)
Controlled Access
DLL: Flow Control
Basics & Delay Analysis
Stop-and-Wait ARQ
Go-Back-N Protocol
Selective Repeat ARQ
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
DLL: Framing
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
Baud Rate, Bit Rate, and Signal Representation in Ethernet
Net Layer: IPv4 & Proto
Net Layer & IPv4 Basics
Fragmentation & MTU
TTL, Protocol & Checksum
IP Options & Padding
Net Layer: IP Addressing
Classful Addr & Casting
Subnetting & FLSM Design
CIDR & VLSM
- CIDR & VLSMPdf
- Address Depletion in ClassFull AddressingDrm Video
- ClassLess Interdomain Routing - CIDR With ExampleDrm Video
- Rules of Creating CIDR BlockDrm Video
- SubNetting In CIDRDrm Video
- CIDR block representation practice questionDrm Video
- CIDR Practice Question_Drm Video
- CIDR Practice Question_Drm Video
- CIDR Practice Question_Drm Video
- CIDR Practice Question_Drm Video
- CIDR Practice QuestionDrm Video
- Designing subnets for CIDRDrm Video
Net Layer:Routing Protocol
Routing Basics & Flooding
DVR, RIP & Split Horizon
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
Timers, RTT & SWS
UNIX Socket Programming
UDP Protocol & Header
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
Network Security
Basics of Network Security
Encryption Algorithms
Authentication Security
Previous-year questions
PYQ collectionPYQ Questions1 questionsPYQ collectionPYQ Questions2 questionsPYQ collectionPYQ Questions1 questionsPYQ collectionPYQ Questions3 questionsPYQ collectionPYQ Questions7 questionsPYQ collectionPYQ Questions6 questionsPYQ collectionPYQ Questions3 questionsPYQ collectionPYQ Questions1 questionsPYQ collectionPYQ Questions10 questionsPYQ collectionPYQ Questions1 questionsPYQ collectionPYQ Questions3 questionsPYQ collectionPYQ Questions2 questionsPYQ collectionPYQ Questions1 questionsPYQ collectionPYQ Questions7 questionsPYQ collectionPYQ Questions2 questionsPYQ collectionPYQ Questions3 questionsPYQ collectionPYQ Questions1 questionsPYQ collectionPYQ Questions6 questionsPYQ collectionPYQ Questions5 questionsPYQ collectionPYQ Questions3 questionsPYQ collectionPYQ Questions8 questionsPYQ collectionPYQ Questions2 questionsPYQ collectionPYQ Questions2 questionsPYQ collectionPYQ Questions4 questionsPYQ collectionPYQ Questions5 questionsPYQ collectionPYQ Questions2 questionsPYQ collectionPYQ Questions1 questionsPYQ collectionPYQ Questions2 questionsPYQ collectionPYQ Questions10 questionsPYQ collectionPYQ Questions1 questionsPYQ collectionPYQ Questions1 questionsPYQ collectionPYQ Questions1 questionsPYQ collectionPYQ Questions1 questionsPYQ collectionPYQ Questions1 questionsPYQ collectionPYQ Questions5 questionsPYQ collectionPYQ Questions6 questionsPYQ collectionPYQ Questions1 questionsPYQ collectionPYQ Questions5 questionsPYQ collectionPYQ Questions2 questionsPYQ collectionPYQ Questions14 questionsPYQ collectionPYQ Questions7 questionsPYQ collectionPYQ Questions2 questionsPYQ collectionPYQ Questions6 questionsPYQ collectionPYQ Questions15 questionsPYQ collectionPYQ Questions4 questionsPYQ collectionPYQ Questions3 questionsPYQ collectionPYQ Questions1 questionsPYQ collectionPYQ Questions8 questionsPYQ collectionPYQ Questions1 questionsPYQ collectionPYQ Questions1 questionsPYQ collectionPYQ Questions1 questionsPYQ collectionPYQ Questions3 questionsPYQ collectionPYQ Questions3 questionsPYQ collectionPYQ Questions1 questionsPYQ collectionPYQ Questions1 questionsPYQ collectionPYQ Questions1 questionsPYQ collectionPYQ Questions4 questionsPYQ collectionPYQ Questions10 questionsPYQ collectionPYQ Questions1 questionsPYQ collectionPYQ Questions1 questionsPYQ collectionPYQ Questions5 questionsPYQ collectionPYQ Questions7 questionsPYQ collectionPYQ Questions5 questionsPYQ collectionPYQ Questions1 questionsPYQ collectionPYQ Questions5 questionsPYQ collectionPYQ Questions2 questionsPYQ collectionPYQ Questions10 questionsPYQ collectionPYQ Questions35 questionsPYQ collectionPYQ Questions143 questions
Explore the course
- General Aptitude & Reasoning
- Programming, Data Structures & Algorithms
- AI, Machine Learning, Big Data & Cloud
- Digital Logic & Computer Organization
- TOC & Compiler
- Discrete Mathematics
- Operating System
- Software Engineering
- Database Management System
- Full Mock Test
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