< All CompTIA A+ Notes

Raul | CompTIA A+ | Module 2.3 - TCP/IP

By: Raul Pop | Related Course: CompTIA A+ | Published: April 20, 2017 | Modified: April 22, 2017
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NotepadDefault Gateway

Default Gateway is like a door(router,proxy server)

you can have 2 default gateways(computers is going to router then proxy server)


NotepadDNS

-FQDN

Full Qualified Domain Name->IP

-www.cybrary.it/example/test>10.17.65.4

www.cybrary.it/example/test

 

when Computer is looking for something its starts from left it.cybrary.www

IT-Domain Name

 


NotepadIPv6

-128 bit address

-3.4 x10 to 38

-hexadecimal format: 0-F

2001:0db8:85a3:0000:0000:8a2e:0370:7334.(EXAMPLE)

-has abbreviation ::

 


NotepadIPv6 Multicast and Anycast

1)Multicast

-start with FF

-no longer broadcast

 

2) Anycast

-1 to closest,nearest Ip(closest network connection,fastest respond back)

 

 


NotepadIPv6 Unicast

1)Link-Local

-IPv6 APIPA

– start with FE8,FE9,FEA,FEB

-FE8___ (example)

 

2) Site-Local

– starts with FEC,FED,FEE,FEF

 

3) Unique Local(Private)

-FC0,FD0

 

4) Global Unicast

-Single Globally Routable Interface

-Similiar – ipv4 Public

-001 binary header

-45 bit Global Routing

-16 bit Network ID(Net ID)

-64 bit Individual

-128 bits total

 

 

 


NotepadTCP/IP 2

1)IPv4 for numbers 1-255

-192.168.1.1 separed by periods 

-4.3 billion address

-allow to communicate with servers to communicate with network

– Network ID part(network)(192.168.1)

-Hot ID part(computer)(1)

 

bit-1/0 on/off(binary language)

byte-10110010

octeect-10110010

00000011

128 64 32 16 8 4 2 1

 


NotepadTCP/IP 3

192.168.1.1

Subnet mask

255.255.255.0

————– this string means network segment and 0 is host segment

 

10.0.0.1

255.255.0.0

10.0./255.255= network segment

0.1/0.0=host segment

 

10.0.0.1- same network with 2

10.0.2.0-same network with 1

10.1.0.3-own network

255.255.0.0

 

IPv4

CIDR

Classless_Inter-Domain_Routing

https://en.wikipedia.org/wiki/Classless_Inter-Domain_Routing

192.168.1.1/8

the last 8 is the host id

 

Subnet mask

we cannot have break in subnet mask

255.0.255.0 invalid subnet mask

0.255.255.0 invalid subnet mask

 

 

 


NotepadTCP/IP 6

IPv4

1) Public

192.221.005.002

Anyone can access in public ip(website)

When you are connecting to a website> you are connecting first to a router that gives you an IP with your computer from your ISP then to internet after that to website

2) Private Network!

 

Ranger of IP

-10.0.0.0/8

-172.16.0.0/12 

-192.168.0.0/16


NotepadTCP/IP 7

APIPA

1)Automatic Private IP Addresses

-169.254.0.0

STATIC

-Self-address 

-Servers,Printers,Routers

IP Address-192.168.1.4

Subnet Mask-255.255.255.0

Default Gateway-192.168.1.1(our router) is a gateway

DNS-Domain Name System

 

 


NotepadTCP/IP 8

Dynamic

The dynamic ip is configured by DHCP

-DHCP(Dynamic Host Configuration Protocol)

-IP Addr.

-Default Gateway

-DNS 

-Lease Length/Expiration

-Reservation by MAC Addr.

-Range


NotepadTCP/IP Config 4

-CLASS A-0.-126.x.x.-Range

                   255.0.0.0-SM

                   128 Networks

                   16,777,216 Hosts

 

-CLASS B-128.0.x.x-191.255.x.x

                   255.255.0.0-SM

                  16384 Net

                  65,536 Host

                   

 


NotepadTCP/IP Configurations

1) Transmission Control Protocol

2) Internet Protocol

3) First address to a computer is MAC (Physical Address)

-Media Access Control

-Located in Network Interface Card

-MAC Address is unique

-6 Paires /HexaDecimal /:

AB:O1:38:BC:78:BF

 

 


NotepadTCP/IP part 5

Class C-192.0.0.x-223.255.255.x

              255.255.255.0

              2 ,097,152 net

              256 hosts

Class D-Multicasting address

224.0.0.0-239.0.0.0

Class E-Experiment Class(Use)

240.0.0.0-255.0.0.0

255.255.255.255(broadcasting) subnet mask

 


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