COMPUTER SCIENCE ILLUMIN.-TEXT
COMPUTER SCIENCE ILLUMIN.-TEXT
7th Edition
ISBN: 9781284156010
Author: Dale
Publisher: Jones & Barlett
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Chapter 15, Problem 42E

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Role of Internet Service Provider:

ISP is a company or organization that permits the user to access to the Internet.

  • Internet access, internet transmit, domain name, registration and hosting, dial-up access are the services provided by ISP.
  • All the three technologies such as phone modem, DSL, and cable modem require ISP to connect the home computer to the internet.

Phone modem:

Phone modem converts the computer data into analog signal to transfer through the telephone line and at the destination; it converts the analog signal to the computer data.

  • It requires only phone connection between home computer and the computer and does not require any extra equipment to connect to the Internet.
  • To connect to the Internet, dial up a computer that is permanently connected to the Internet, which is present at the Internet Service Provider...

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Find the error, assume data is a string and all variables have been declared. for ch in data:         if ch.isupper:             num_upper = num_upper + 1         if ch.islower:             num_lower = num_lower + 1         if ch.isdigit:             num_digits = num_digits + 1         if ch.isspace:             num_space = num_space + 1
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