Please enable JavaScript.
Coggle requires JavaScript to display documents.
Introduction to computer Networks, Transport Layer, Application Layer,…
Introduction to computer Networks
• Introduction to Networking
• Necessity of Networks
• Data/resource sharing basics
• Centralization and distribution basics
Main Features of Computer Networks
• Communication speed
• File sharing
• Back up and Roll back is easy
• Software and Hardware sharing
• Security
• Scalability
• Reliability
Architecture
peer-to-peer
client-server
Types
Wiered
LAN
MAN
WAN
Wireless
WPAN
WLAN
WWAN
Body Area Networks
Internet
Main components
Topologies
Models
layererd/ why?
signals
Line configuration
Transmisson mode
Switching
packet
circuit
Network Based Services
Transport Layer
Layer 4
• Service-point addressing
Ports
Sockets
• Segmentation and reassembly
• Connection Control
Connection-oriented
Coneectionless
• Multiplexing and Demultiplexing
• Transport Control
• Flow control / Congestion control
Stop-and-wait protocols
:
Go-back-n
Selective Repeat
• Error detection
PROTOCOLS
TCP
UDP
Additional
Vulnerabilities/security
QoS
Application Layer
Layer 6
Layer 5
Layer 7
Session
Dialog control
Synchronization
presentation
Translation
Encryption
Compression
Application
HTTP
HTTPS
FTP
SMTP
POP3
IMAP
DNS
SNMP
TelNet
Network Layer
Layer 3
Routing
Distance Vector
RIP
BGP
Link State
OSPF
Logical Addressing
IP
Address
Class/CIDR
IPv4
IPv6
Fragmentation
Mechanisms,(TOS,TTL,options,Header checksum)
Other Protocols
ARP
ICMP
NAT
DHCP
IPsec
Path Determination
Best Path
Load Balancing
Additonal
Attacks
Preventions
QoS
resources
latency
bandwidth
reliability
MPLS
Emerging Technologies
Advantages
Challenges
Futrure Trends
Network Access
:
main respo to transfer info
within the LAN
Layer 1
Layer 2
Physical
IEE
Functions
Encoding/Decoding
Digital-to-digital
Line Encoding
Unipolar
Bipolar
AMI
B8Zs
HDB3
Polar
NRZ
L
I
RZ
Biphase
Manchester
Differential
Block Encoding
Parity
Hamming Code
Reed Solomon
Source Code Encoding
Lossless
Huffman/...
Lossy
Preamble generation
Bit transmission/reception
Bandwidth
Impairment
Interference
Transmisson medium/topology
Topology
Bus
Ring
Star
Mesh
Tree
Hybrid
Medium
Guided
Coaxial
Fiber optics
Twisted pair
Unguided
Radiowave
Microwave
Infared
Ethernet
Random Access
slotted ALOHA
Pure ALOHA
Collision Detection
Collison
CSMA/CD
Frame Structure
DataLink
Functions
Framing
Character bit stuffing/SONET
Media Access
Switches
Switching alogrithms
Multiple Access Networks
ALOHA, CSMA/CD
Error Control
CRC
Hamming Distance
Flow Control
A Naïve Protocol
Adding Flow Control
Window flow Control