Question 20: Consider the following regular expression: A[0-9]+..+$ Which one of the strings does match this regular expression? Double quotes are shown around the actual strings. > "555 the sky is falling" : "the sky is falling" .wn : "555," .wo ! Ho Ow> Question 21: Which of the following best describes the purpose of partition schemes like DOS or GPT partitions? A: Partitions are necessary to store any filesystem on any block device. B: Partitions allow multiple filesystems to be stored on a single block device. C: A filesystem typically spans multiple partitions. D: Filesystems contain partitions. E: Partitions allow a single filesystem to be stored on multiple block devices. Question 18: Consider this output from searching for occurrences of evil in pathnames: $ find /mont/schardt/-iname "*evil*" /mont/schardt/Documents and Settings/All Users/Application Data/Microsoft/User Account Pictures/Mr. Ev /wont/schardt/Documents and Settings/Mr. Evil /cont/schardt/Documents and Settings/Mr. Evil/Application Data/Microsoft/Address Book/Mr_ Evil.wab /wont/schardt/Documents and Settings/Mr. Evil/Cookies/mr evil@www.drudgereport[1].txt /mnt/schardt/Documents and Settings/Mr. Evil/Cookies/mr evil@advertising[2].txt /mnt/schardt/Documents and Settings/Mr. Evil/Cookies/mr. evil@atdmt[2].txt /wont/schardt/Documents and Settings/Mr. Evil/Cookies/mr. evil@atwola[2].txt /mnt/schardt/Documents and Settings/Mr. Evil/Cookies/mr. evil@centrport[1].txt /cont/schardt/Documents and Settings/Mr. Evil/Cookies/mr. evil@cnn[1].txt /mnt/schardt/Documents and Settings/Mr. Evil/Cookies/mr evil@doubleclick[1].txt /cont/schardt/Program Files/mlBC/logs/#evilfork.EFnet.log Which of the commands below would produce the following output? www.drudgereport[1] advertising[2] atdmt[2] atwola[2] centrport[ 1] cnn[1] doubleclick[1] A: find /mot/schardt/ -iname "evil"" | sed -E-e '/evil@/d; s/* *@(.*).txt$/\\1/g' B: find /ment/schardt/ -iname "evil"" | grep'@' | sed -E-e's(@//g' C: find /mut/schardt/ -iname "evil"" | grep-y'@' | sed -E-e's/*@//g' D: find /mont/schardt/ -iname "*evil"" | sed -E-e's/^ *@(.*).txt$/\\1/g' E: find /mut/schardt/ -iname "evil"" | sed -E -e'/evil@/ld; s/^*@(.*).txt$/\\1/g' Question 19: What is the purpose of the File Allocation Table (FAT) in the FAT filesystem? A: Adds delicious flavor to the cooked filesystem B: Stores the allocation status of clusters but not the order of clusters in a cluster chain. C: Stores the order of clusters in a cluster chain but not the allocation status of clusters. D: Stores the allocation status of clusters and the order of clusters in a cluster chain. E: Stores directory entries for the root directory.|