Which of the following statements are true?
1. A hash map can store null as a value
2. A hash map can use null as a key
3. A hash map can’t store null as a value
4. A hash map can’t use null as a key
a. 1 and 2
b. 1 and 4
c. 3 and 4
d. 2 and 3
a. 1 and 2
A hash map can store null as a value and use it as a key.
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A __________ virus is explicitly designed to hide itself from detection by anti-virus software.
Fill in the blank(s) with the appropriate word(s).
Find two fellow students who are taking a second year of a foreign language. Bring them into the local computer lab, have them sit down in front of one of the computers, and bring up one of your favorite U.S. Web sites. Ask one of them to critique the site for five minutes in the foreign language they’re studying. Suggest that the critique include positives, negatives and suggestions for improvement. Ask the other student to translate for you.
a. How many positive comments did they give? b. How many negative comments did they offer? c. How many suggestions for improvement did they give you? d. What does this outcome suggest about conducting usability tests in a language other than the user’s native tongue? What will be an ideal response?