IDT5 Presentatie New

Data

Data

information converted into binary digital form

When a computer reads in 0+1 its called

Binary

Communication

the exchange of information between two or more things.

Forms of communication

• Texting or Talking

• Social Media

• Collaboration Tools

Datacommunication

the process of using communication technologies to transfer data

Datacommunications components

• Sender-sending data over a network.

• Receiver-receiving data from the network.

• Message

• Protocols-set of rules

IP

Internet Protocol -To identify hardware devices on a network.

TCP

Transmission Control Protocol -To check if the connection between networks is there.

what protocol does a web server use

HTTP

Message formatting

IPV4 OF IPV6 ,LENGTH,SOURCE,DESTINATION

Protocols examples

• HTTP/HTTPS

• TCP/IP

• FTP

Communication media

the path that the data travels through between source and destination

Communication media example

• television cable

• ethernet cable

• Microwaves

What is another name for communication media

medium or link

Extentions

• txt -Text File

• png -Image

• Zip -Compressed File

• doc + docx -Word Document

intermediary devices

• Switch

• router

• access points(wireless)

NIC

Network Interface Card

name the 3 networks

• Internet (global network)

• intranet (local/restricted network)

• extranet (private network)

The internet is a worldwide collection of interconnected…

LANs and WANs

LANs are connected to each other using…

WANs

Reliable Networks

• Fault Tolerance

• Scalability

• Quality of Service

• Security

Encoding

Process of converting info into acceptable form for transmission

Decoding

reverses the process of encoding to interpret the info.

what is the difference between Circuit and Packet Switching

Circuit=a channel or circuit needs to be established

packet= no requirement to establish a channel.

Name the 4 tcp/ip model layers

• application

• Transport

• Internet

• Network access

What model is the modern internet based on

TCP/IP Model

Name the 7 OSI model layers

• application

• presentation

• session

• transport

• network

• data link

• physical

Name an advantage of OSI Model for users

Determines the required hardware and software to build their network.

Name an advantage of OSI Model for manufacturers

Defines which parts of the network their products should work with

PDU

Protocol Data Unit

Each layer’s information is referred to as

PDU

name the 3 packets in encapsulation

• Frame

• Packet

• Segment

Transmission/Communication mode

transferring data between two devices.

Name the 3 types of transmission modes

-Simple Mode

-Half-Duplex Mode

-Full-Duplex Mode

Simplex

Only one of the two devices on a link can transmit, the other can only receive

Half-Duplex Mode

each station can both transmit and receive, but not at the same time.

Full-Duplex Mode

both stations can transmit and receive simultaneously.

Name the 3 elements to any communication

-Source (Sender)

-Destination (Receiver)

-Channel (Media)

Name the common protocols

message encoding,timing,size

Message timing includes:

-Flow Control

-Response Timeout

-Access method

Name the message delivery options

Unicast: one to one communication.

-Multicast: one to many

-Broadcast: one to all

Latency

The delays in communication over a network

Throughput

– The amount of traffic

– The type of traffic

Goodput

the amount of usable data that is transferred

Name a common type of cabling

Copper cabling

Name 3 types of copper cabling

Unshielded Twisted-Pair

shielded Twisted-Pair

Coaxial cable

Name 2 types of industry fiber optic cabling is being used in

Enterprise Networks

Fiber-to-the-home

yellow jacket is for…

single-mode fiber cables

orange jacket is for…

multimode fiber cables