The four primary factors that set the stage for web 2.0 of the social web are following: broad bandwidth, sustainable business models, new web programming technologies and application programming interfaces.
• Broad Bandwidth which technology developments have been taking place at a faster situation and the availability of internet has remarkably increased over the years through the rise of broad band technology. The broadband increase in easy accessibility laid a strong base for social web or web 2.0.
• Sustainable Business Model which E-commerce took its roots and has proven a great success rate.
• New Web Programming Technologies which includes web content, web client, server scripting and network security.
• Application Programming Interface is a system of resources and tools in an operating system which enables the developers to create software applications.
Not stands for Naczelna Organizacja Techniczna.
Collision between fast moving particles
Answer:
try:
cardNumber = str(input('Enter your card number her: \n'))
if (len(cardNumber) > 16 or len(cardNumber < 16)):
raise
except:
print ('You have entered an invalid cardNumber.')
else:
if cardNumber.startswith("2"):
print('American Express Card')
elif cardNumber.startswith("4"):
print('Visa Card')
elif cardNumber.startswith("5"):
print('Master Card')
else:
print('Unknown Card')
Explanation:
In the try block section:
The first line prompt the user for input, which is converted to string and assigned to cardNumber variable. The next line test the length of the cardNumber entered, if it is less than 16 or greater than 16; an exception is raise.
In the except section:
An error message is displayed telling the user that he/she has entered an invalid card number.
In the else section:
This is where is program check for type of card using an if...elif...else statement block. If the cardNumber start with 2; an output of "American Express card" is displayed. If the cardNumber start with 4; an output of "Visa card" is displayed. If the cardNumber start with 5; an output of "Master card" is display else "Unknown card" is displayed to the user.
Answer:
Purpose. Domain names serve to identify Internet resources, such as computers, networks, and services, with a text-based label that is easier to memorize than the numerical addresses used in the Internet protocols.
