Computer Networks

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Computer Networks


Computer Networks



PHYSICAL LAYER


Data Communications
Networks
Network Models
OSI Model
Layers in the OSI Model
TCP/IP Protocol Suite
Addressing
Transmission media
Guided media
Unguided media
Switching
Circuit-Switched Networks
Datagram Networks
Virtual-Circuit Networks
Dial-up Modems
Digital Subscriber Line
Cable TV Networks
Cable TV for Data Transfer
Important Short Questions and Answers:Computer Networks - Physical Layer

DATA LINK LAYER


Data link control- Framing
Flow and Error control
Protocols
Noiseless Channels Protocol
Noisy Channels Protocol
High-level Data Link Control (HDLC)
Multiple Access
Random Access
Controlled Access
Wired LANs
IEEE Standards
Standard Ethernet
Changes in the Standard
Fast Ethernet
Gigabit Ethernet
IEEE 802.11
Bluetooth: Architecture and Devices
Connecting Devices
Backbone Networks
Virtual LANs
Virtual-Circuit Networks: Frame Relay and ATM
Asynchronous Transfer Mode (ATM)
Important Short Questions and Answers: Computer Networks - Data Link Layer

NETWORK LAYER


Logical Addressing - IPv4 Addresses
IPv6 Addresses
Internet working and Need for Network Layer
IPv4 (The Internet Protocol version 4)
IPv6
Network Address Mapping
Mapping Logical to Physical Address: ARP
Reverse Address Resolution Protocol (RARP)
Bootstrap Protocol (BOOTP)
The Dynamic Host Configuration Protocol (DHCP)
ICMP
The Internet Group Management Protocol (IGMP)
ICMPv6 (Internetworking Control Message Protocol)
Direct Versus Indirect Delivery
Forwarding Techniques
Unicast Routing Protocols
Multicast Routing Protocols
Important Short Questions and Answers: Computer Network Layer

TRANSPORT LAYER


Process to Process Delivery in Transport Layer
User Datagram Protocol (UDP)
Transmission Control Protocol (TCP)
Congestion
Congestion Control: Open Loop and Closed Loop
Quality of services
Techniques to Improve QoS
Important Short Questions and Answers: Computer Transport Layer

APPLICATION LAYER


Domain Name System
Electronic Mail
File Transfer Protocol (FTP)
World Wide Web (WWW)
Hypertext Transfer Protocol (HTTP)
Multimedia
Cryptography
Symmetric Key Cryptography
Asymmetric Key Cryptography
Digital signatures: Direct, Arbitrated
Communication Security: Authentication protocols
Important Short Questions and Answers: Application Layer



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