You can block logical ports from invaders and make your computer virtually invisible to others on the Internet by installing ________.
A. a packet sniffer
B. a firewall
C. a packet filter
D. antivirus software
Answer: B
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Consider the Set interface in the java.util package. Write preconditions and post conditions in OCL for the following operations:
The constraints below assume that the association between the list and its contained elements is called elements. a. int size() returns the number of elements in the set. b. void add(Object e) adds an object to the set. If the object is already in the set, does nothing. c. void remove(Object e) removes an object from the set d. boolean contains(Object e) returns true if the object is contained in the set.
For a zip code field, the data type may be changed from Number to Text with no problems
Indicate whether the statement is true or false
_________ is the process of combining two or more values to create a single value
Fill in the blank(s) with correct word
If you discover that you need to make a correction, you can edit the formula. Click the cell with the formula you want to edit. Press the ____ or double-click the cell to enter editing mode.
A. F1 B. F2 C. F3 D. F4