A Web ________ extracts data from text or tables on a Web page and imports that data into Excel
Fill in the blank(s) with correct word
query
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Over time, disruptive innovation tends to become less attractive to users in a new market.
Answer the following statement true (T) or false (F)
Match the following commands to the corresponding descriptions.
_____ 1. lp xyz _____ 2. cat xyz _____ 3. rm i xyz _____ 4. /david/xyz _____ 5. cancel lp1 _____ 6. ls l _____ 7. cd .. _____ 8. ls a _____ 9. rmdir xyz _____ 10. pwd _____ 11. lpstat -d _____ 12. rm - -help _____ 13. lpr -p filename _____ 14. rm -r * _____ 15. lpstat _____ 16. ls -m _____ 17. cd _____ 18. mkdir - -parent xx/yy _____ 19. lpr -T _____ 20. lp -m filename a: absolute pathname to the file called xyz b: changes the directory to the parent of the current directory c: lists current directory files including the invisible files d: sends xyz file to the line printer e: deletes the directory called xyz f: displays the content of the file called xyz g: displays the current directory pathname h: cancels the printing job on the lp1 printer i: confirms the deletion of the xyz file before deleting it j: lists the current directory in long format k: lists files across the page separated by commas l: changes the current directory to the HOME directory m: removes all subdirectories and files under the current directory n: shows name of the default printer o: shows status of the printing requests p: sends mail to the user mailbox after completion of the print request q: prints on a specific (named) printer (Linux) r: Displays usage message for the rm command (Linux) s: creates two levels of directories under the current directory (Linux) t prints the specified title on the banner page (Linux)
Is this server a stateful server? If so, what kind of state information (global or session) does it maintain?
Using the three-tier software architecture presented in this chapter, design and implement a client-server suite for the following protocol (it is not a well-known service): Each client sends to the server a name. The server accumulates the names received from successive clients (by appending each, with a linefeed (‘
’), to a static string). Upon receiving a name, the server sends the names that it has collected to the client. The figure below illustrates the sequence diagram of a session of the protocol.
Matt, the Chief Information Officer (CIO), wants to protect laptop users from zero day attacks. Which of the following would BEST achieve Matt's goal?
A. Host based firewall B. Host based IDS C. Anti-virus D. Anti-spyware