When a security hardware device fails or a program aborts, which state should it go into?
What will be an ideal response?
A firewall device that went into a fail-safe control state could prevent all traffic from entering or exiting, resulting in no traffic coming into the network. It also means that internal devices cannot send traffic out, thereby restricting their access to the Internet. If the firewall went into a fail-open state, then all traffic would be allowed, opening the door for unfiltered attacks to enter the system. If a software program abnormally terminates, then a fail-open state could allow an attacker to launch an insecure activity, whereas the fail-safe state would close the program or even stop the entire operating system in order to prevent any malicious activity.
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All exception classes inherit, either directly or indirectly, from ________.
a. class Error. b. class RuntimeException. c. class Throwable. d. None of the above.
In g(), to what does the call, f(‘a’) resolve? How could the code be modified so that the call still resolves to A::f(int)?
Suppose we have the following namespace: ``` namespace A { void f(int); //. . . } using namespace A; // In the global namespace void g() { f(‘a’); // calls A::f(int) } ``` In the global namespace, the function g( ) calls f(‘a’). There is no problem here, f(‘a’) is unambiguously A::f(int). Now suppose at some later time, the following namespace grouping and using directive is inserted prior to the call to function f. ``` namespace B { void f(char); //. . . } using namespace B; ``` For convenience, all these are listed again. namespace A ``` { void f(int); //. . . } using namespace A; namespace B { void f(char); //. . . } using namespace B; // In the global namespace void g() { f(‘a’); } ```
________ aligns text immediately with the right margin
A) Justified B) Right alignment C) Center alignment D) Left alignment
The units of measure that you can use in a style declaration to determine the size or positioning of an element are known as ____________________.
Fill in the blank(s) with the appropriate word(s).