Which of the following statements about regular expressions is false.
a. Both "A*" and "A+" will match "A", but only "A*" will match an empty string.
b. "\d" matches any decimal digit.
c. The pattern "[aeiou]" matches any vowel.
d. The quantifier ? in a regular expression matches one or more occurrences of the preceding pattern.
d. The quantifier ? in a regular expression matches one or more occurrences of the preceding pattern
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Only computers that have ________ can truly execute multiple asynchronous tasks concurrently.
a) a processor b) multiple processors or cores c) very large memories d) two of each type of I/O device
Which of the following utilities was native to the Linux operating system and can be used to do string searches across multiple directories?
a. GREP b. DD c. LIST d. STRINGS
A connection designates a specific program designated by a port number on a specific computer's IP address.
True False
The disadvantage to using the conditional operator is that it ____.
A. is inefficient B. has high precedence C. can be difficult to read D. slows execution time