What is the advantage of chaining in a hash table?
a. No load limit
b. The hash table can be smaller
c. The hash function is less complicated
d. A key-value pair can be deleted
a. No load limit
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Which type of exception is thrown if a call to the new operator fails?
a. ArithmeticError b. DivideByZero c. bad_alloc d. MemoryError
Answer the following questions true (T) or false (F)
1. If B is a public base class of D, then D’s members cannot invoke public members functions of B. 2. An inheritance chain of any desired length is possible.
Match the following commands to the corresponding descriptions.
_____ 1. HI= hello _____ 2. PS1="Hi: " _____ 3. ps a _____ 4. echo $HI _____ 5. set _____ 6. kill 9 11237 _____ 7. export _____ 8. ls | tee xyz _____ 9. grep hello xyz _____ 10. unset xyz _____ 11. G _____ 12. export xyz _____ 13. set o vi _____ 14. 10G _____ 15. alias D=rm _____ 16. alias _____ 17. set -o noclobber _____ 18. set -o ignoreeof _____ 19. fc -l _____ 20. set +o noclobber a: removes the specified variable b: displays the list of the shell variables c: removes the specified process d: displays the current directory and saves it in a file e: finds the string hello in the specified file f: displays exported variables g: reassigns the prompt string h: assigns value to variable HI i: displays the status of all active processes j: displays the content of the specified variable k: makes letter D the alias name for the rm command l: displays the 10th command from the history file m: exports the variable called xyz n: lists commands in the history list o: shows the last command in the history file p sets the option to prevent overwriting an existing file q sets the option to prevent accidental log off when [Ctrl-d] key is used r turns off the option that prevents overwriting an existing file s turns on the command line editing option t lists the name of aliases
What is the improved efficiency of Dijkstra's algorithm by using an alternative data structure?
a. O((V+E) log E) b. O(V+E) c. O(V) d. O(V*E)