Cabling
Types
1.coxical cable
* Think cable
*Thick cable
2.Twisted pair cable
*STP (shild)
*UTP(unshild)
3.Fiber optical cable
* Index step
*Index gread
*singal mode fiber cable
* Multimode fiber optical cable
Ethernet ->10 mbps
Fast ethernet -> 100 mbps
Gigabit ethernet ->1 gbps
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1.http
Hyper text transfer protocols
* http is used in the application layer protocols in the osi model.
* http is used to sending and reciving
The massage over the world wide web(www)
* Port number is 80
* http non secure
* http does not support encryption and description
2.https(hyper text transfer protocol secure )
* https is the secure version ofnhttpsn
* port numper of is 443
* it support encryption and descrypition.
3.ssl (secure socket layer)
*modern name transport layer security
* ssl prensantation layer protocol in the osi model
* data are encrypt the ssl certificate
Comando csr
Version csr
3.ftp(file transfer protocol)
* ftp is used sending and reciving files
* Application layer protocol osi model
* port number 20 and 21
4.SMTP(simple mail tranfer protocol)
* It is application layer protocol in the osi model
* used to sending the mail over the interest.
* port number of smtp of is 25
5.pop(post office protocols)
*It is the application layer protocol that provides the and user that ability to fetch and retrive the mail
* port number is 110
6.dns(domain name server)
*It is application later protocol in the osi model.
*It is usednto convert the human readable hostname. Into machime readable ip address.
7.dhcp(dynamic host configuration )
* dhcp client server protocol.
*dhcp dutomaticall generate the ip address ti computer
* It is used Application layer protocol
* port number is 67 and 68
8.Tcp(transmission control protocol )
* reliable it trasfer
* connection oriented protocol
* packet are in order
* flow control and error control
* slow transmition of data
* heavy weight
* It is the transport layer protocol in the osi model
9.udp(user datagram protocol)
*non reliable transfer protocol
* connection less
* no flow control and no error control
*pack are not otder
10.arp (address resolution protocol)
*network layer protocol in the osi model
* It is used to convert the ip address into mac address
11.rarp(reverse address resolution protocol)
* It is usednby the host to discover the Ip address
12.Icmp(internet control massage protocol )
*It is used network layer protocol
* icmp is used in the networking device like router
* icmp is the error reporting protocol that send the error massage to the secure ip address.
13.ping (packet internet grouper)
* ping runs over the icmp
* ping check the conectivity.
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