Introduction of Cloud Computing, TCP/IP Protocol and configuration

Typical service model

The architecture of Cachet ScriptClientPot Server

-A resource or function is provided by the server

-the client uses resources or functions

Brief introduction of TCP/IP Protocol

TCP/IP is the most widely supported set of communication protocols

-including standard protocols in a large number of Internet applications

-support communication across network architectures and operating system platforms

Three elements of communication between host and host

-IP address (IP address)

-Subnet mask (subnet mask)

-IP routing (IP router) router

Overview of IP addr

Function: used to identify a computer

Address composition (dotted decimal):

-A total of 32 binary bits

-expressed as 4 decimal numbers to. Separate

192.168.1.1

10.11.12.13

1.2.3.4

192.168.4.207

192.168.4.254

Configure the IP address:

1. Manual configuration

two。 Automatic configuration (if there is a DHCP server in the network)

Configure the IP address of win2008: 192.168.1.1

Configure the subnet mask of win2008: 255.255.255.0

Operation steps:

-right-click the desktop "Network"-- > "Properties"-- > "change Adapter Settings"

-double-click "Local connection"-- > "Properties"

-double-click "Internet Protocol version 4 (TCP/IPv4)"

-when the configuration is complete, click "OK" to finish

View the IP address:

Graphic mode

Operation steps:

-right-click the desktop "Network"-- > "Properties"-- > "change Adapter Settings"

-double-click "Local connection"-- > "details"

Command mode

Operation steps:

-win key + r: start-> run

-enter

-enter ipconfig to view the IP address

-enter exit to close the command line interface

Classification of IP addresses

For general computer networks

-Class A: 1 ~ 127 net + master

-Class B: 128 ~ 191 network + network + master + master

-Class C: 192 ~ 223 network + master

For Multicast and Scientific Research

-Class D: 224 ~ 239 Multicast

-Class E: 240 ~ 254 scientific research

192.168.1.1-> just look at the first number 192-> for category C.

Subnet mask: distinguishes between network bits and host bits of IP addr

The network bit is represented by the binary 1 and the host bit by the binary 0.

The IP address consists of network bits and host bits.

Landline number: area code + number

010-12345678

0316-7351111

Area code: identifies an area

Number: number of the landline in the area

192.168.1.1 Mustang-> hosts from 192.168.1 area (network)-> numbered bit 1

192.168.2.1Mutual-> hosts from 192.168.2 area (network)-> numbered bit 1

192.168.10.1Meltel-"the first number is 192PMI -" Category C address-"net + master"

11000000.10101000.00001010.00000001

11111111.11111111.11111111.00000000

192.168.10.1 255.255.255.0

It can also be expressed as 192.168.10.1 hand 24 (24 network bits)

What is a gateway (a gateway is used when communicating across a network)

-the "gateway" that connects from one network to another

-usually a router or firewall / access server

The role of DNS server: to resolve domain names to IP addresses

Www.qq.com-"IP address