Distinguish between packet-filtering firewalls and application-level gateways.
What will be an ideal response?
A packet-filtering firewall examines all data sent from outside a local area network and automatically rejects the data
packets that have local area network addresses. For example, if a hacker from outside obtains an address from a computer
inside the network and tries to sneak a harmful data packet through the firewall, the packet-filtering firewall will reject the
data packet since it originated outside the network but had an internal address. An application-level gateway scans the actual
data. If the message is deemed safe, it is allowed through the firewall.
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which of the following operations are legal? If so, why? If not, why not? a) BaseAmount + 25;
We reproduce the class Money here, in part: ``` class Money { public: Money( ); Money(int dollars, int cents); Money(int dollars); Money(double amount); // other public members const Money operator+(const MoneyADD& amt2)ADD; >>Need to add & and semicolon int getCents( ) const; int getDollars( ) const; private: int dollars; int cents; //other private members }; ``` Note that * is not overloaded in the class, but operator + is overloaded using an operator function with the following declaration: const Money operator+(const Money& amt2); The question is: Given the declarations, ``` Money baseAmount(100, 60); // $100.60 Money fullAmount; ``` a) BaseAmount + 25; b) 25 + BaseAmount; c) baseAmount = 2 * baseAmount; d) baseAmount+baseAmount.
Shapes with ____ fills can take an exceptionally long time to load.
A. color B. gradient C. vector D. Both a and c
The class Grid Layout constructs___________to hold components.
a. a horizontal grid with one row b. a vertical grid with one column c. a grid with multiple rows and columns d. a square grid with the same number of rows as columns
In the accompanying figure of a Microsoft Access 2016 document, Box A points to a _____.
?
A. ?design grid B. ?resized field list C. ?recordset D. ?subdatasheet