U.S Visas

Below are the different types of US visas

A-1	Diplomats
A-2	Foreign Govt officials
A-3	Servants of A-1 and A-2
B-1	Bussiness visitor
B-2	Tourist visitor
C-1, C-2, C-3	Foreigners in Transit
C-1	Foreign travelers in transit through US
C-2	Foreign travelers in transit to UN headquarters
C-3	Foreign Govt Officials and Family in transit through US
D-1, D-2	Crewmen
D-1	Crew members who land temporarily and depart on the same ship or plane
D-2	Crew members who land temporarily and depart on the another ship or plane
E-1	Treaty Trades and family
E-2	Treaty Investors
E-3	Australian Speciality workers
F-1	Student
F-2	Family member of F-1
G-1 to G-4	International organization Staff
G5	Servents of G-1 to G-4
H-1B	Speciality Workers
H-1B1	Chileans and Singaporeans
H-1C	Registered Nurse
H-2A	Agricultural Worker
H-2B	Seasonal Worker
H-3	Trainees
H-4	Family of H-1, H-2, H-3
I	Foreign News media
J-1	Exchange visitor
J-2	Family member of J-1
K-1	Fiance or Fiancee
K-2	Childern of K-1
K-3	Spouses of US citizens
K-4	Childern of K-3
L-1	Intra company transfer
L-2	Family member of L-1
M-1	Vocational student
M-2	Family member of M-1
N-8	Parent of SK3
N-9	Child of N-8
O-1	Extraordinary Ability
O-2	Support staff of O-1
O-3	Family of O-1, O-2
P-1	Athletes or Entertainers
P-2	Artists or Entertainers
P-3	Artists or Entertainers
P-4	Family of P-1, P-2, P-3
Q-1	Cultural Exchange
Q-2	Irish national
Q-3	Family member of Q-1
R-1	Religious Workers
R-2	Family member of R-1
S-1 to S-7	Informants to US govt
T-1	Victims of Trafficking
T-2	Spouse of T-1
T-3	Childern of T-1
T-4	Parents of T-1
TN	NAFTA Professional (Canada, Mexico)
TD	Family member of TN
U-1	Victims of Crime
U-2	Spouses of U-1
U-3	Childern of U-1
U-4	Parents of U-1
V-1	Spouses of US residents
V-2	Childern of US residents
V-3	Childern of V-1 or V-2

Links

1. Events

http://upcoming.yahoo.com/
http://www.artsopolis.com/http://savvycities.com/
2. Travel
http://www.trekaroo.com
travel.yahoo.com

3. Hiking
http://www.bahiker.com/
http://www.everytrail.com/

4. Other

Apartment searching site - padmapper.com/

http://www.padmapper.com/

Good site to search apartments for rent. It displays posting from several site (like craigslist etc) on google map.

QR code

Quick Response code is a square bar code. QR codes can store lot of data compared to barcodes.
QR codes can store url's, email address, small emails, vcard etc.

QR codes can be read by using mobile phone application

QR-Code Data Capacities
Numeric only Max 7,089 characters
Alphanumeric Max 4,296 characters
Binary (8 bits) Max 2,953 bytes

QR-Codes dont need to scan from one particular angle, they can be read from any angle.

Ethernet cable

Inside the ethernet cable, there are 8 color coded wires.
These wires are twisted into 4 pairs of wires.
One wire in the pair is solid colored wire and the other is primarily white wire with a colored stripe.

T568A and T568B are the two color codes used for wiring eight-position RJ45 modular plugs.
Both are allowed under the ANSI/TIA/EIA wiring standards.
The only difference between the two color codes is that the orange and green pairs are interchanged.



Pin Numbering in the clip



Signals on the Pins



In straight cable pin 1 to 8 on one side is connected to pin 1 to 8 on other side

1 <--> 1
2 <--> 2
3 <--> 3
4 <--> 4
5 <--> 5
6 <--> 6
7 <--> 7
8 <--> 8

In Crossover cable Tx is connected to Rx (ie Tx+ to Rx+, Tx- to Rx-, Rx+ to Tx+, Rx- to Tx-)

1 <--> 3
2 <--> 6
3 <--> 1
4 <--> 4
5 <--> 5
6 <--> 2
7 <--> 7
8 <--> 8



In Rolled or rollver cables pin 1 to 8 on one side is connected to pin 8 to 1 on other side

1 <--> 8
2 <--> 7
3 <--> 6
4 <--> 5
5 <--> 4
6 <--> 3
7 <--> 2
8 <--> 1

If same type of devices needs to be connected cross cable is used. ie to connect PC to PC, switch to switch or router to router.

Straight cable is used if both sides of the cables are different types of devices. ie to connect PC to switch or PC to router or switch to router etc.

Gigabit Ethernet ports which support auto sensing (MDI/MDIX) doesn't require cross cable. Straight cable can be used.

Difference Between Similar Terms and Objects

To find Difference Between Similar Terms and Objects see http://www.differencebetween.net/