INLS181 Spring 2000-01 Midterm Exam

INLS 181 Spring 2000
Midterm Exam

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You may use your notes and any computer-based resource for this exam, except that you may not communicate with other people via email, voice, writing, chat or other means during the exam.
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1. What is the IP address for ruby.ils.unc.edu? (enter the IP address) nslookup; ping
2. Which port does HTTP use?
  (enter a port number) /etc/services
3. Which of the below is a reason that DARPA passed on responsibility for the Internet to the NSF?
  1. ARPAnet was no longer useful
  2. ARPAnet was no longer experimental and research oriented history of the Internet
  3. Netscape was consuming too much Internet bandwidth
  4. DARPA wanted to provide scientists access to its supercomputers
  5. None of the above
4. Which of the below is a reason that NSF has sought to privatize the Internet?
  1. Too much commercial traffic needs to travel the Internet
  2. Independent agencies are needed to make policy decisions, such as how to assign Internet top level domains
  3. The Internet is no longer just for research
  4. All of the above are reasons "who runs the Internet"
  5. None of the above are reasons
5. What are differences between Netscape and Internet Explorer?
  1. Different levels of support for CSS the Monster CSS list; HTML 4.0
  2. Only Internet Explorer can use GIF images
  3. Only Netscape can access FTP sites
  4. All of the above are differences
  5. None of the above are differences
6. On Ruby, what is the last modification date of the file /export/htdocs/inls181/blank.html?
  ls -l or "view info" of http://ils.unc.edu/inls181/blank.html
7. On Ruby, what command might have been used to produce this output:
```
total 18
drwxr-xr-x   2 gbnewby  users         512 Mar 20 14:31 .
drwxr-xr-x  10 gbnewby  users         512 Mar 20 13:11 ..
-rw-r--r--   1 gbnewby  users        2004 Mar 20 14:18 conferencing.html
-rw-r--r--   1 gbnewby  users        2409 Mar 20 13:37 copyright.html
-rw-r--r--   1 gbnewby  users        1561 Mar 20 14:17 index.html
-rw-r--r--   1 gbnewby  users        1797 Mar 20 13:45 irc.html
-rw-r--r--   1 gbnewby  users        1682 Mar 20 14:04 irc2.html
-rw-r--r--   1 gbnewby  users        2347 Mar 20 14:07 irc3.html
-rw-r--r--   1 gbnewby  users        1925 Mar 20 14:19 irc4.html
```
  1. ls -la /export/htdocs/inls181/Spring00-01/notes/Mar20 try it, or "man ls"
  2. ls -a /export/htdocs/inls181/Spring00-01/notes/Mar20
  3. ls -F /export/htdocs/inls181/Spring00-01/notes/Mar20
  4. ls /export/htdocs/inls181/Spring00-01/notes/Mar20
  5. None of the above
  For questions 8-10: There are errors in the HTML file: /export/htdocs/inls181/Spring00-01/exams/examfile.html (on Ruby). Identify three errors:
8. First error:
9. Second error:
10. Third error: (there are other errors, too). Use View Source or the W3 validator
11. What is true about FTP?
  1. It was developed shortly after Mosaic
  2. It uses port 23
  3. It cannot be used to transfer binary files
  4. It is never used by programs such as Netscape Composer, Dreamweaver or Microsoft Frontpage
  5. None of the above All are false; mentioned various times in class
12. What distinguishes Netscape Composer from Dreamweaver?
  1. Dreamweaver is free; Composer costs money
  2. Dreamweaver can use tables; Composer can't
  3. Dreamweaver runs on a PC; Composer runs on httpd
  4. Dreamweaver is WYSIWYG; Composer is entirely text-based
  5. None of the above are true try it, or check notes on HTML editors
13. Who runs the Internet?
  1. The Internic, which has full control over all domain names
  2. The NSF, which enforces universal acceptable use policies
  3. DARPA, which specifies military penalties for any mis-use
  4. All of the above run the Internet together, with minimal input from other agencies
  5. None of the above have sole responsibility for running the Internet as discussed in class, "who runs the Internet?"
14. Imagine that I read a newsgroup message at school, then go home and access the same newsgroup. Why might the same message not show up at home?
  1. Because I am using tin, and tin knows that I've already seen that message
  2. Because I'm using UNC's news server at school, and my ISP's news server at home, and their contents are not coordinated
  3. Because the message has expired in the interrim
  4. Because Duke U. has stolen the message I saw
  5. (a), (b) and (c) are all correct all are possible; Usenet class
15. If I subscribed to a mailing list this morning, what are some reasons why I wouldn't get any email messages by the end of today?
  1. The mailing list sends out messages as they arrive, instead of in DIGEST mode
  2. All messages are moderated, but my "subscribe" message has not yet been seen by the moderator
  3. There have been no messages to the mailing list since I subscribed only option that makes sense; mailing list class
  4. All of the above could be reasons
  5. None of the above
16. What is a true statement about http://www.yahoo.com?
  1. They make extensive use of frames, but not tables
  2. They have a search engine, but it does not enable AND or OR searching
  3. They do not use any GIF images, only PNG
  4. (b) and (c) are accurate statements
  5. None of the above are accurate statements View Source and look at the site; AND/OR is on the "Advanced Search" page
17. What factor helped to catch Cliff Stoll's hacker?
  1. The FBI and CIA were willing to help from the start
  2. The hacker never used international networks or phone lines
  3. Cliff's logs of the hacker's activities were extensive As discussed in class; other options didn't occur in the videotape
  4. Cliff's bicycle included a super-secret jet pack
  5. None of the above
18. What is true about the pico editor?
  1. You can configure the pull-down menus similarly to Microsoft Word 2000
  2. What You See Is What You Get, when editing HTML pages
  3. It edits PNG files almost as well as Dreamweaver
  4. The control key is used for most commands (for example, ^X) try it; discussion of HTML editors & Unix
  5. None of the above
19. What does TCP do that IP doesn't?
  1. Include a sequence number TCP/IP packet structure class
  2. Include a source address
  3. Include a destination address
  4. Include a checksum
  5. Both IP and TCP do all of the above
20. What is a potential problem with putting scanned images on a Web page?
  1. There are no appropriate standard file formats for scanned images
  2. The scanner probably doesn't produce high enough resolution for a Web page
  3. The scanner might not be able to read a JPEG image
  4. All of the above are potential problems
  5. None of the above You can save in any file format; scanner resolution might be TOO high for Web pages; Scanners don't read JPEG images, they scan
21. What is true about CSS?
  1. CSS are a part of DHTML discussed in CSS class; CSS documentation at W3 or elsewhere
  2. CSS are a requirement of HTML 3.2, but deprecated in HTML 4.0
  3. CSS are understood by Lynx, but are not accessed at all by Netscape
  4. CSS will soon be the only valid way to specify the structure of an HTML document
  5. None of the above are true
22. In an organization, why might email be preferable to face-to-face meetings?
  1. Email records can be kept, but meeting records cannot be
  2. Email provides direct and unambiguous communication, which is not possible with meetings
  3. Email enables many-to-many communication, which is not possible with meetings
  4. Email is synchronous, but meetings are asynchronous
  5. None of the above the opposites of (a) - (c) are true
23. What are the structural components of a table in HTML?
  1. Rows and headings
  2. Rows and columns Corresponding to <tr> and <td>
  3. Rows and background colors
  4. Columns and headings
  5. None of the above
24. CGI programs may also be characterized as:
  1. Compiled programs
  2. Client-side programs
  3. Server-side programs CGI programs are run by the Web server. They might be compiled, but don't need to be (PERL is not compiled)
  4. (a) and (c)
  5. None of the above
25. Javascript might be used for:
  1. Mouseovers
  2. Checking the input of a form before it is sent
  3. Adding a new tag to HTML
  4. (a) and (b) above Javascript can't add new HTML tags; the other purposes were discussed in Javascript class
  5. All of the above
26. Who might want to use XML?
  1. Someone who wants something easier to learn than HTML
  2. Someone who wants their work to function the same on all browsers (e.g., Netcape and Explorer)
  3. Someone who wants to add new structural elements (tags) to their data this is basically the definition of XML as discussed in class
  4. Someone who wants to add a background color to their Web page
  5. None of the above
27. What factors might help a systems administrator decide among different mailing list software?
  1. LISTSERV is free, but Majordomo is expensive
  2. Majordomo has the same exact syntax as LISTSERV and Listprocessor
  3. Only Listprocessor can handle automatic subscription and unsubscription
  4. All of the above
  5. None of the above (a) - (c) are the opposite of the mailing list notes
28. What is the appropriate mode to transfer a JPEG file using an FTP client?
  1. Picture may be acceptable, but not as good as (b)
  2. Binary FTP class
  3. ASCII
  4. WS-FTP
  5. None of the above
29. What is the purpose of the Unix command "chmod 644" as it relates to Web pages?
  1. This command sends email to the Web server (http) letting it know that it is allowed to access a particular file
  2. This command sets file access permissions such that the Web server may access the file "man chmod" or 1st class notes
  3. This command changes the httpd module to a Swiss version ("ch") instead of the default German version ("de")
  4. This command enables the use of CGI programs, which are otherwise prohibited
  5. None of the above
30. What program is appropriate for editing images?
  1. Photoshop, because it enables image transformation via the "Filters" menu
  2. Microsoft Photo Editor, because it can read and write JPEG files
  3. Dreamweaver, because it can write PNG files
  4. It depends on your purpose and your level of experience with each program (a) - (c) are true, so (d) is the best choice: it depends
  5. None of the above
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INLS 181 Spring 2000 Midterm Exam

Honor code

INLS 181 Spring 2000
Midterm Exam