California State University, Sacramento

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Final

Points: 150
Due Date: 5 p.m. 5/24

Read each question carefully. Please include the question number and/or letter with each answer. If you send me the original file as an attachment or otherwise, please put your answers in bold. This helps me grade a little faster. Also, include your name and the last 4 digits of your student identification number. I will return, ungraded, any final submitted without a name and number.

If anyone sends a message about a particular question through the listserv, that person will automatically miss the question. Duplicate student answers will be resolved by individual oral examinations with myself and the dean of the computer science department.

Again, this is not a self-paced examination. I will accept finals no later than 5 p.m. 5/24/2002. Please direct all questions about the final to me. Good Luck....

  1. (5 points) True/False - Information on the Internet is exchanged in packets.

  2. (5 points) True/False - SMTP and POP are two USENET protocols.

  3. (5 points) True/False - During an FTP session, both computers must be on-line.

  4. (5 points) True/False - All of the computers on the Internet are also on the World Wide Web.

  5. (5 points) True/False - A dial-up modem connection is more easily hacked than a cable modem connection.

  6. (5 points) True/False - An open mailing list automatically accepts all subscription requests.

  7. (4 points) How do you unsubscribe from the csc8s list, and why would it be a good idea to do so?

  8. (4 points) What is the difference between an IP address and a DNS name? Give an example of each.

  9. (15 points) Fix the errors in the following HTML code (Show me the new HTML code.)
    <html title ="csc8s test page">
       <head>MY GREAT PAGE<head>
       <body>
       <body bgcolor="TEAL">
       </p>This text should be aligned to the left
       <bold>This text should be bold</b>
       <img href="coolpic.gif">
       <br>
       <a href="www.csus.edu">link to http://www.csus.edu</a>
       </body>
    </head>


  10. (5 points) What is MP3? (hint: it's not an audio file.)

  11. (5 points) ) What does URL stand for, and what are its four main parts?

  12. (5 points) A directory with UNIX permissions dr--rw-r-x has:
    1. write and execute for all, read and execute for the owner, and read and write for the group
    2. read and execute for all, read and execute for the group, and read and write for the owner
    3. write and execute for the owner, read and execute for the group, and read and write for everyone
    4. read and write for group, read and execute for all, and read for the owner
    5. read and execute for all, read and execute for the owner, and read and write for the group


  13. (4 points) Explain the difference between absolute and relative addressing.


  14. (5 points) When you use PINE in one of the computer science labs to access your email on GAIA, (Choose all that are correct.)
    1. all your email is downloaded to the PC you are using in the lab.
    2. only unread email is downloaded to the PC you are using in the lab.
    3. the PC you are using will still have your mail messages on the hard drive when another student uses the system.
    4. Documents attached to email messages you read will be on the PC's hard drive if you opened the attachment and did not delete it even though you logged off and powered down the PC.


  15. (3 points) Yahoo is a: (Choose all that are correct.)
    1. commercial online service provider
    2. subject tree
    3. web directory
    4. hybrid search engine
    5. all of the above


  16. (3 points) What is a distributed database?

  17. (4 points) What is a digital certificate, and what are its functions?

  18. (4 points) What is the ID and password used to connect to an anonymous FTP server?

  19. (12 points) Analyze the digital certificate that appears when you submit your student id to check your grades.

    1. What is the signature algorithm?

    2. At what date and time will this security certificate expire?


  20. (4 points) What is ASCII, and what is its purpose?

  21. (8 points) What are the protocols used in Internet e-mail and what are their purposes?

  22. (4 points) What is a cookie, and how could it ever pose a security threat?

  23. (4 points) Describe what traceroute is, and what it can help you do.

  24. (6 points) What would the permission string look like for read and write for user, read and execute for group, and read for all others?

  25. (4 points) What is SSL and what does it do?

  26. (2 points) Can you "put" a file to all anonymous FTP sites? Why or why not?

  27. (15 points) List the exact commands you would use to anonymously connect from your gaia account to an FTP server with the address of 10.25.75.1. Also list the exact commands you would use to download a file named final.html from the home/student/class/ directory to your account.