A group of users in ABC Corp. needs to back up several gigabytes of data daily. Which of the following is the best media for this scenario?
a. DLT
b. Dual-Layer DVD
c. External USB hard drive
d. DVD
Answer: a. DLT
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Which of the following statements about the following code is false? word_counts = {} for word in text.split(): if word in word_counts: word_counts[word] += 1 else: word_counts[word] = 1
a. The expression text.split() tokenizes text by calling string method split, which separates the words using the method’s delimiter string argu-ment—if you do not provide an argument, split uses a space. b. Method split returns a list of tokens (that is, the words in text). c. The expression word_counts[word] += 1 inserts a new key-value pair in the dictionary. d. All of the above statements are true.
Package javafx.collections defines ObservableList and other observable collection interfaces. The package also contains class ________, which provides static methods for creating and manipulating observable collections.
a. FXObservable b. FXCreatObservable c. FXObservableList d. FXCollections
When defining the interval argument of the DATEADD function, yyyy should always be enclosed in parentheses
Indicate whether the statement is true or false
Which three of the following are WAN physical layer standards?
a. EIA/TIA 449 b. X.21 Male c. X.25 female d. V.35 e. IEEE 802.11G