Computer Networks Diagrams of all 6 units

Unit I

Topology

Bus Topology

Ring Topology

Star Topology

Computer Networks Diagrams of all 6 units

Mesh Topology

Tree Topology

Hybrid Topology

Computer Networks Diagrams of all 6 units

OSI Model

TCP/IP Model

Computer Networks Diagrams of all 6 units

Transmission Media

Single and Multimode Fiber

Spread Spectrum

Computer Networks Diagrams of all 6 units

FHSS(Frequency Hopping Spread Spectrum)

DSSS (Direct Sequencing Spread Spectrum)

Computer Networks Diagrams of all 6 units

Unit II

Framing Methods:

Character Count

Flag bytes with byte stuffing

Flag bits with bit stuffing

Computer Networks Diagrams of all 6 units

Flow Control in DLL

Go-Back-N

Selective Repeat

HDFC Protocol

Normal Response Mode

Computer Networks Diagrams of all 6 units

Asynchronous balanced mode

HDFC Frames

Control field format for the different frame types of HDLC

Computer Networks Diagrams of all 6 units

PPP (Point to Point Protocol)

PPP frame format

PPP Phase Transition Diagram

Computer Networks Diagrams of all 6 units

Unit III

PURE ALOHA

Frames in PURE ALOHA

PURE ALOHA FLOW CHART

Computer Networks Diagrams of all 6 units

Slotted Aloha

CSMA Methods

Computer Networks Diagrams of all 6 units

CSMA with Collision Detection

CSMA with Collision Detection (Flow Chart)

Computer Networks Diagrams of all 6 units

CSMA/CA

CSMA/CA (Flow Chart)

Computer Networks Diagrams of all 6 units

Wavelength Division Multiple Access Protocols

Frame formats. (a) Ethernet (DIX). (b) IEEE 802.3.

Binary Exponential Back -off algorithm,

Computer Networks Diagrams of all 6 units

The 802.11 MAC Sublayer Protocol

802.11 Frame Structure

Computer Networks Diagrams of all 6 units802.15 Bluetooth Architecture

Bluetooth Protocol Stack

Bluetooth Frame Format

802.16 Wi-Max Frame Format

Computer Networks Diagrams of all 6 units

Unit IV

Circuit Switching

Message Switching

Packet (Datagram) Switching

Computer Networks Diagrams of all 6 unitsPacket (Virtual Circuit approach) Switching

IPV4 Header

Computer Networks Diagrams of all 6 unitsIPV4 Address Format and Ranges

IPV6 Header

Computer Networks Diagrams of all 6 unitsNetwork Address Translation (NAT)

ICMP (Internet Control Message Protocol) Header

Types of Routing Protocol

Computer Networks Diagrams of all 6 unitsDistance Vector Routing Protocol (Initialization Phase)

Distance Vector Routing Protocol (After sharing and updation Phase)

Distance Vector Routing Problem (Count to Infinity)

Computer Networks Diagrams of all 6 unitsRIP (Routing Information Protocol) Header Format

Link State Routing (LSR)

OSPF (Open Shortest Path First) Area Diagram

Computer Networks Diagrams of all 6 unitsOSPF Header

BGP (Border Gateway Protocol) Working Example

BGP Header Format

Computer Networks Diagrams of all 6 unitsARP & RARP

ARP (Address Resolution Protocol) Header

RARP (Reverse Address Resolution Protocol)

MPLS (Multiprotocol Label Switching) Header Format

Computer Networks Diagrams of all 6 units

MPLS Working Diagram

Mobile IP

Computer Networks Diagrams of all 6 units

Unit V

TCP Header Format

TCP Connection establishment using three-way handshaking

TCP Connection Establishment Scenario (3)

Computer Networks Diagrams of all 6 units

Three protocol scenarios for establishing a connection using a three-way handshake. (a) Normal operation, (b) Old CONNECTION REQUEST appearing out of nowhere. (c) Duplicate CONNECTION REQUEST and duplicate ACK.

TCP Connection Release- The two-army problem

TCP Connection termination using three-way handshaking

TCP Connection Release Scenarios (4)

Computer Networks Diagrams of all 6 units

Four protocol scenarios for releasing a connection. (a) Normal case of a three-way handshake. (b) final ACK lost. (c) Response lost. (d) Response lost and subsequent DRs lost.

TCP Congestion control

TCP Transmission Policy(Flow control)

Computer Networks Diagrams of all 6 units

TCP in wireless network Split TCP: Indirect TCP

TCP-aware Link Layers: Snoop

Computer Networks Diagrams of all 6 unitsUDP Header

Pseudo UDP Header

SCTP Header

Computer Networks Diagrams of all 6 unitsRTP Header

Silly window syndrome Problem

Techniques to achieve Good QoS

1. Buffering

Computer Networks Diagrams of all 6 units

2. Scheduling

FIFO queue

Priority Queue

Weighted fair queuing

Computer Networks Diagrams of all 6 units

3. The Leaky Bucket Algorithm

4. The Token Bucket Algorithm

Computer Networks Diagrams of all 6 units

RSVP-The Resource ReSerVation Protocol

Path Message

Resv messages

Reservation merging

Computer Networks Diagrams of all 6 units

Differentiated Services

Expedited Forwarding

Assured Forwarding

Computer Networks Diagrams of all 6 units

Unit VI

HTTP Header (Hypertext Transfer Protocol)

HTTP request Header

HTTP response Header

FTP (File Transfer Protocol)

Computer Networks Diagrams of all 6 units

SMTP(Simple Mail Transfer Protocol)

Computer Networks Diagrams of all 6 unitsMIME (Multipurpose Internet Mail Extensions)

MIME Header

POP3 (Post Office Protocol Version3) & IMAP (Internet Mail Extension Protocol)

DNS(Domain Name System)

Computer Networks Diagrams of all 6 unitsName Space

DNS Iterative resolution example DNS Recursive resolution example

DNS Header

DHCP (Dynamic Host Configuration Protocol)

Computer Networks Diagrams of all 6 unitsDHCP Header

DHCP Message Types

TELNET

TELNET NVT Concept

Computer Networks Diagrams of all 6 units

TELNET Command Structure

SNMP (Simple Network Management Protocol)