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Questions and Answers
What is a primary disadvantage of a ring topology network?
What is a primary disadvantage of a ring topology network?
In a ring topology, what role does a repeater play?
In a ring topology, what role does a repeater play?
Which of the following network types is characterized by its geographical span?
Which of the following network types is characterized by its geographical span?
What key innovation in the 1970s revolutionized data transmission in networks?
What key innovation in the 1970s revolutionized data transmission in networks?
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What is the main purpose of a Storage Area Network (SAN)?
What is the main purpose of a Storage Area Network (SAN)?
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Which network topology is most similar to a hub-and-spoke model?
Which network topology is most similar to a hub-and-spoke model?
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What is the main difference between a LAN and a MAN?
What is the main difference between a LAN and a MAN?
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Why was the development of ARPANET in the 1960s considered a significant milestone in network history?
Why was the development of ARPANET in the 1960s considered a significant milestone in network history?
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Which of the following is NOT a primary motive for using networks?
Which of the following is NOT a primary motive for using networks?
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Which of the following represents a component of network topology?
Which of the following represents a component of network topology?
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What is the primary purpose of the data communication model?
What is the primary purpose of the data communication model?
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Which of the following protocols is NOT mentioned in the text as an example of a network protocol?
Which of the following protocols is NOT mentioned in the text as an example of a network protocol?
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Which of the following is NOT considered a 'Network Service and Software' component, as mentioned in the provided text?
Which of the following is NOT considered a 'Network Service and Software' component, as mentioned in the provided text?
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Which layer of the OSI model deals with error detection and correction?
Which layer of the OSI model deals with error detection and correction?
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What is the primary function of the Network Layer in the OSI model?
What is the primary function of the Network Layer in the OSI model?
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Which of the following is NOT a characteristic of a sliding window protocol?
Which of the following is NOT a characteristic of a sliding window protocol?
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In the context of network design, what does the term 'subnet mask' refer to?
In the context of network design, what does the term 'subnet mask' refer to?
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Which protocol is responsible for translating domain names (e.g., google.com) into IP addresses?
Which protocol is responsible for translating domain names (e.g., google.com) into IP addresses?
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What is the primary purpose of the Transport Layer in the OSI model?
What is the primary purpose of the Transport Layer in the OSI model?
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Which of the following protocols is used for secure communication over the internet?
Which of the following protocols is used for secure communication over the internet?
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What is the difference between TCP and UDP protocols?
What is the difference between TCP and UDP protocols?
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Flashcards
Ring Topology
Ring Topology
A network topology where each device is connected in a circular way, allowing data to flow in one direction.
Dedicated P-2-P Connection
Dedicated P-2-P Connection
Each device in a network is connected directly to two others with a dedicated link.
Unidirectional Traffic
Unidirectional Traffic
Data flows in only one direction across the network.
Network Categories
Network Categories
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Local Area Network (LAN)
Local Area Network (LAN)
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Packet Switching
Packet Switching
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ARPANET
ARPANET
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Hybrid Topology
Hybrid Topology
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Computer Networking
Computer Networking
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Networking Protocols
Networking Protocols
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Network Security
Network Security
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Data Communication Model
Data Communication Model
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Network Components
Network Components
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Computer Networks
Computer Networks
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OSI Model
OSI Model
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TCP/IP Model
TCP/IP Model
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Data Link Layer
Data Link Layer
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Error Detection
Error Detection
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Routing Algorithms
Routing Algorithms
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Transport Layer
Transport Layer
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Application Layer
Application Layer
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Study Notes
Course Information
- Course Title: Computer Networks (ITDC-208)
- Instructor: Dr. Mohit Kumar, Assistant Professor
- Department: IT
- Institution: B.R. Ambedkar National Institute of Technology, Jalandhar
Syllabus
- Unit 1: Introduction to Computer Networks History, Network Hardware, Network Software, OSI and TCP/IP reference models.
- Unit 2: Physical Layer: Guided Transmission Media, Wireless Transmission, Communication Satellites, The Public Switched Telephone Network.
- Unit 3: Data Link Layer: Data Link Layer Design Issues, Error Detection and Correction, Elementary Data Link Protocols, Sliding Window Protocols, Example Data Link Protocols. Medium Access Control Layer: The Channel Allocation Problem, Multiple Access Protocols, Ethernet, Wireless Lans, Broadband Wireless, Bluetooth, RFID, Data Link Layer Switching.
- Unit 4: Network Layer: Network Layer Design Issues, IP, Routing Algorithms, Congestions Control Algorithms, Quality of Service, Routing Information Protocol
- Unit 5: Transport Layer: The Transport Service, Elements of Transport Protocols, Flow and Congestion Control, The Internet Transport Protocol: UDP, TCP.
- Unit 6: Application Layer: Hyper Text Transfer Protocol, File Transfer Protocols and Trivial File Transfer Protocol, Simple Mail Transfer Protocol, Domain Name Service, Telent, Secure shell, Network File System, Simple Network Management Protocol, Dynamic Host Configuration Protocol, Multipurpose Internet Mail Extensions, Post Office Protocol.
Course Objectives
- Understand computer network basics, different models, and wired/wireless network issues.
- Design, calculate, and apply subnet masks for networking requirements and routing.
- Analyze various application layer protocols (HTTP, DNS, SMTP, FTP).
- Analyze network architecture and technology requirements for an organization.
- Understand computer network protocols and their application in network design and implementation.
Course Outcomes
- Build understanding of fundamental computer networking concepts.
- Familiarize students with networking taxonomy and terminology, advancing networking concepts for advanced courses.
- Gain expertise in specific networking areas like designing/maintaining individual networks.
- Understand network security and various protocols (FTP, HTTP, Telnet, DNS).
Recommended Books
- Andrew S. Tanenbaum, "Computer Networks" 4th Edition, 2010
- James F. Kurose and Keith W. Ross, "Computer Networking" Pearson Education, 2012
- William Stalling, "Data and Computer Communication" 7th Ed, 2nd Indian Reprint 2010
- Behrouz A. Fourouzan, Data Communications and Networking, 2/e Tat McGraw-Hill, 2006
Questions
- Why Networks?: Efficient communication, resource sharing, scalability & flexibility, cost reduction, automation.
Components of Networks
- Connecting devices
- Transmission Media
- Protocols and Software Components
- Network Topology
- Network Services (Firewall)
- Data and Information
Data Communication Model
- Exchange data between devices via transmission medium.
- Data exchanged as bit streams/signals.
- Types: Local & Remote.
- Fundamental characteristics: Accuracy, Delivery, Timelines, Jitter.
Components of a Data Communication System
- Protocols
- Sender
- Medium
- Receiver
- Message
Data Flow Modes
- Simplex: unidirectional data flow (e.g. keyboard to monitor)
- Half-duplex: unidirectional at a specific time (e.g. walkie-talkie)
- Full-duplex: bi-directional data flow (e.g. telephone)
Networks
- Interconnection of devices for communication.
- Applications: Resource sharing, exchanging information, video conferencing, instant messaging.
- Criteria: Performance, Reliability, Security.
Types of Connections
- Point-to-point: Dedicated link between two points (e.g. IR remote)
- Multipoint: Multiple devices sharing a single link (e.g. spatial/time sharing).
Network Topologies
- Mesh: Each device is connected to every other device.
- Advantages: Robust, privacy, security
- Disadvantages: High cost, complexity
- Star: Each device is connected to a central hub.
- Advantages: Easy to add/remove devices, simple setup
- Disadvantages: Hub failure disables the network.
- Bus: Devices connected to a single shared cable.
- Advantages: Easy to connect
- Disadvantages: Limited bandwidth, weak signal over long distance
- Ring: Devices are connected in a closed loop.
- Unidirectional signal flow
- Hybrid: Combining different topologies.
Categories of Networks
- Based on geographic span: LAN, MAN, WAN.
- Based on purpose: SAN, EPN, VPN.
History of Networks
- ARPANET (1969): Early milestone in connecting computers.
- Packet switching (1970s): Efficient data transmission.
- TCP/IP (1980s): Standardized networking protocols.
- DNS implementation (1983): Domain name system
- Network switch introduction (1990): Kalpana
- Wi-Fi standards (1997)
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Description
Test your understanding of the fundamental concepts in Computer Networks from the ITDC-208 course. This quiz covers historical perspectives, network models, and various layers of network architecture, including the physical and data link layers. Assess your knowledge on protocols, media, and network design issues.
