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5 Written questions

5 Matching questions

  1. pointer
  2. interpreter
  3. virtual machine
  4. garbage
  5. shadow
  1. a a program that reads instructions, determines what they say, and executes them. The CPU is an interpreter for machine language; the JVM is an interpreter for compiled Java bytecodes.
  2. b to hide similar items with the same name.
  3. c 1. data that is incorrect, meaningless, or random; 2. storage that is no longer pointed to by any variable and therefore can no longer be accessed.
  4. d a variable containing the address of other data.
  5. e an abstract computer that is simulated by an interpreter program running on an actual computer.

5 Multiple choice questions

  1. describes a function that modifies its arguments.
  2. a classification of objects into a tree structure that groups related objects.
  3. given two sets, the intersection is the set of elements that are members of both sets.
  4. a process that removes unwanted elements from a collection.
  5. the top node of a tree, from which all other nodes can be reached.

5 True/False questions

  1. DFSfirst-in, first-out: describes the ordering of a queue. A queue is fair.


  2. stack spacea section of the runtime stack holding the values of all variables for one invocation of a procedure.


  3. XMLeXtensible Markup Language, a way of writing data in a tree-structured form by enclosing items in pairs of opening and closing tags, e.g. <zipcode> 78712 </zipcode>


  4. arrayan item (or description of items) being sought in a search.


  5. Unicodean element of a linked list, tree, or graph, often represented by a data structure.


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