______ is currently the most popular network standard for LANs.
A. Ethernet
B. Token ring
C. TCP/IP
D. LTE
Answer: A
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Write code which randomly chooses a number from 1 to 10. It should then display low if the number is 5 or less, otherwise it should display high.
What will be an ideal response?
Define an exception class called TimeFormatException. If the user enters an illegal time, like 10:65, or even gibberish, like 8&*68, your program should throw and handle a TimeFormatException.
Write a program that converts a time from 24-hour notation to 12-hour notation. The following is a sample interaction between the user and the program: Enter time in 24-hour notation: 13:07 That is the same as 1:07 PM Again? (y/n) y Enter time in 24-hour notation: 10:15 That is the same as 10:15 AM Again? (y/n) y Enter time in 24-hour notation: 10:65 There is no such time as 10:65 Try Again: Enter time in 24-hour notation: 16:05 That is the same as 4:05 PM Again? (y/n) n End of program 1. It is helpful to follow the author's suggestion to get the normal case working first, and then add exception handling. There are a number of issues to work out to do the transformation from 24-hour to 12-hour format. The first problem is to decide how to parse the input with a colon separating the hours and minutes integers. All of the methods introduced so far parse text that is delimited with spaces. The solution used here is to read the input one character at a time and use a switch structure to convert the hours and minutes to integers. But this leads to another problem, how to deal with variations on the input format. For example, the number of hours could have zero, one or two digits, e.g. :10, 0:10, or 00:10 for ten minutes after midnight. To make the solution easier, a requirement is imposed on the input: It must be in xx.xx format, i.e. it must have two digits, a semicolon, and then another two digits. Any other format is flagged as a formatting error. So leading zeros are required for times earlier than 10:00. Another problem is obtaining and saving the input so it can be reprinted in the error message. The solution resolves this by reading in five characters individually (note the first one is with readNonwhiteChar) and any remaining characters as a string. The next steps check each character to see if they are valid: only 0, 1 or 2 are allowed for the first character, etc. Additional processing of legitimate times is needed to subtract 12 from hours that are over 12, print "noon" for 12:00, change "AM" to "PM" for hours greater than 11, and conditionally print a leading zero for minutes that are less than ten. After the code to parse and process the input is done, the easiest way to add exception handling is to modify the code in the DivideByZeroException.java and DivideByZeroExceptionDemo.java files. Just change the names in the exception definition file, replace the body of the demo file with the code developed above, and add the code in catch to get the correct printout. This is an excellent example to work on test case development since there are a number of situations that need special attention in the code. Here are some good examples: • Insufficient number of characters in hh field - should cause an exception. • 00:00 - Should print "0:00 AM". • 12:00 - Should print "12:00 noon". • 12:01 - Should print "12:01 PM". • 11:59 - Should print "11:59 AM". • 23:59 - Should print "11:59 PM". • 24:00 - Should cause an exception. • 11:60 - Should cause an exception. • Combinations with all correct values except in one of the five positions (for example, a1:15, 1a:15, 11a15, 11:a5, and 11:1a) - Should cause an exception. • A completely wrong input (for example f*!bc%) – Should cause and exception. A correct input with additional characters (for example 11:15%xyz) – Should cause an exception.
Which of the following is NOT an option from the Display for Review arrow?
A) Original B) Revised C) Final D) Original: Show Markup
The database argument of any database function requires the selection of the entire table
Indicate whether the statement is true or false