Which of the following is true about MAC addresses in a wireless network?
A. MAC address filtering will stop a determined attacker
B. MAC addresses are Network layer identities
C. you need to configure the MAC address before you use the WNIC
D. you can change a WNICs MAC address with software
Answer: D
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Statements of which of the following kind should be placed at locations in the class block code at which the event should be raised?
(A) Public Event UserDefinedEvent(par1 As dataType1, par2 As dataType2, ...) (B) RaiseEvent UserDefinedEvent(arg1, arg2, ...) (C) Dim WithEvents object1 As ClassName (D) Private Sub object1_UserDefinedEvent(par1, par2, ...) _ Handles object1.UserDefinedEvent
Answer the following statements true (T) or false (F)
1. You cannot assign a decimal value to a double variable because the decimal data type allows for much great precision than the double data type. 2. When you assign a double value to a decimal variable, the double value is implicitly converted to a decimal with no loss of data. 3. A cast operator is the name of the desired data type, written inside parentheses and placed to the left of the value that you want to convert. 4. When a cast operator is applied to a variable, it changes the contents of a variable.
Which of the following XML attribute names is invalid?
(a) _notvalid (b) I am not valid (c) not-valid.1 (d) _not1valid2
What do discs, like the kind shown in the accompanying figure, usually measure?
A. 3.5 inches in diameter and less than one-twentieth of an inch thick B. 4.75 inches in diameter and less than one-twentieth of an inch thick C. 3.5 inches in diameter and more than one-twentieth of an inch thick D. 4.75 inches in diameter and more than one-twentieth of an inch thick