Which of the following needs to be configured on a switch to use a packet sniffer?
A. Port trunking
B. Port mirroring
C. Tagged VLAN
D. Untagged VLAN
Answer: B. Port mirroring
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All of the following are true about data sources EXCEPT:
A) a data source can be any organized group of data. B) when you merge a letter with a mailing list, the mailing list is initially stored in a separate data source file. C) a data source is a file that can be viewed but not edited. D) before a data source can be used, it has to be registered within OpenOffice.
If you omit the fourth argument in a VLOOKUP function, Excel will assume you intend the fourth argument to be False.
Answer the following statement true (T) or false (F)
What is the value of GRID(3, 3) after the instructions corresponding to the following pseudocode are executed?
``` R = 1 DOWHILE R < 5 C = 2 DOWHILE C < 5 GRID(R, C) = R + C C = C + 1 ENDDO R = R + 2 ENDDO ``` a) 5 b) 6 c) 7 d) none of the above
Answer the following statements true (T) or false (F)
1) C# is like C++ in that programmers must manage memory explicitly. 2) A destructor has the same name as the class and its constructor. 3) You cannot determine when the garbage collector will execute. 4) The garbage collector looks for objects with no values. 5) Each object of a class has its own copy of all the instance variables of the class.