DHCP DORA Process

DHCP Process using DORA

DHCP - Dynamic Host Configuration Protocol

This protocol is used to gives out IP addresses to devices that connects to it with the process below.

More than 2 Billion use the internet and to access the internet you need IP(Internet Protocol) address not only to connect the internet but to connect a network this can be LANs/WANs/MANs and it will be a slow process to set up each IP address manually to each device that you need to connect to a network and this is where DHCP comes in to take over the manpower and make it easier for us.

D - Discover

O - Offer

R - Request

A - Acknowledge

Network Definition

Network

Two or more devices communicating

Router
Joins two or more Network's together.

LAN

Local Area Network

Multiple Devices connected via one Switch/Router

i.e. Classroom, Small building society

HAN
Home Area Network

WAN

Wide Area Network

Two or more LAN's connected together
This Network can b spread through cities

MAN

Metropolitan Area Network

Two or more WAN's connected together
This Network can be spread through countries.

PAN
Personal Area Network
Bluetooth

SAN
Storage Area Network
Network providing storage via Disk Arrays, Tape Drives

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Drives

HDD - Hard Disk Drive - A mechanical Drive with multiple platters storing your data.

FDD - Floppy Disk Drive - Magnetic Disk maximum storage of 1.44 MB

UFD - Universal Flash Drive - This can be a normal USB

SSD - Solid State Drive - Special Flash Storage called NAND, very fast but expensive (More reliable and less power consumption)

SSHD - Solid State Hybrid Drive - Typically like HDD but has a flash based cache. Still the same speed of a HDD. You don't see much difference in the naked eye.

O/D - Optical Drive - CD, DVD, Blu-ray.

External Hard Drive - Like HDD with mechanical drive but its portable and can be connected via USB 2.0 and USB 3.0 or eSATA. It won't as fast as a Internal Hard Drive because of SATA connector.


Desktop Drive - External Drive needs power from the power socket.
Portable Drive - External Drive can be USB Charged.

Unicast, Broadcast, Multicast

Uni-cast

One to One

You and One of your friends communicating

Broadcast

One to Everyone

You communicating to the world i.e. Twitter.

Multicast

One to Specific Group

You communicating to your group of friends i.e. Facebook Friends.

CompTIA A+ Acronyms

Note: Ctrl+F to find a Acronyms easily

1. CD - Compact Disk
2. CD-ROM - Compact Disk Read Only Memory
3. CDFS - Compact Disk File System
4. CMOS - Complementary Metal-oxide Semiconductor
5. CNR - Communication and Network Riser
6. CPU - Central Processing Unit
7. CRT - Cathode-ray Tube
8. DC - Direct Current
9. DDOS - Distributed Denial of Service
10. DoS - Denial of Service
11. DDR - Double Data Rate
12. DDR RAM - Double Data Rate Random Access Memory
13. DDR SDRAM - Double Data Rate Random Access Memory
14. DHCP - Dynamic Host Configuration Protocol
15. DIMM - Dual Inline Memory Module
16. DMA - Direct Memory Access
17. DMZ - Demilitarized Zone
18. DNS - Domain Name Server
19. TCP - Transmission Control Protocol
20. UDP - User Data-gram Protocol
21. WAN - Wide Area Network
22. LAN - Local Area Network
23. IP - Internet Protocol
24. FAST - File and Setting Transfer (XP Wizard)
25. NOS - Network Operating System
26. AFH - Adaptive Frequency Hopping
27. DUN - Dial-Up Networking
28. PoE - Power over Ethernet
29. RRAS - Remote Routing Access Server
30. VPN - Virtual Private Network
31. WINPE - Windows Preinstalled Environment
32. WINRE - Windows Recovery Environment
33. ACT - Application Compatibility Toolkit
34. SATA - Serial Advance Technology Attachment
35. PATA - Parreral Advance Technology Attachment
36. RoI - Return or Investment
37. AHCI - Advanced Host Controller Interface
38. FSB - Front Side Bus
39. ZIF - Zero Insertion Force
40. LIF - Light Insertion Force
41. HIF - Heavy Insertion Force
42. NAS - Network Attached Storage
43. FTP - File Transfer Protocol - 20/21
44. TFTP - Trivial File Transfer Protocol - 69
45. SFTP - Secure Shell File Transfer Protocol - 115
46. SSH - Secure Shell - 22
47. SMTP - Simple Mail Transfer Protocol - 25
48. SMTPS - Simple Mail Transfer Protocol Secure - 465
49. HTTP - Hyper-transfer Protocol - 80
50. HTTPS - Hyper-transfer Protocol Secure - 443
51. POP3 - Post Office Protocol - 110
52. NTP - Network Time Protocol - 123
53. IMAP - Internet Message Access Protocol - 143
54. SNMP - Simple Network Management Protocol - 161
55. SMB - Server Message Block - 445
56. RSH - Remote Shell - Remote Shell
57. LDAP - Light-weight Directory Access - 389
58. RDP - Remote Desktop Protocol - 3389
59. RFB - Remote frame-buffer - 5900
60. L2TP - Layer 2 Tunneling Protocol - 1701
61. PPTP - Point to Point Tunneling Protocol - 1723