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You can assign an IP address to the appliance for management purposes. This IP address has to be from the subnet the two interfaces are connected to. For example, if you reexamine the right side of Figure 21-1, the management address would have to be an unused address from 10.0.1.0. When you re assigning a management IP address to the appliance, the address must be from the subnet connected to the two interfaces on the appliance. Here s the command to configure the management address:

Reprinted, with permission, from DeCherney AH et al: Current Obstetrics & Gynecologic Diagnosis Treatment, 10th ed. New York: McGraw-Hill, 2007:362.

Discussion:

This program produces the following output:

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class derived: public base { int j; public: // derived uses both x and y, and also passes them to base. derived(int x, int y): base(x, y) { j = x*y; cout << "Constructing derived\n"; } // ...

All servers connect indirectly and maintain connections to the host server. By default, the server that hosts the database is also its zone s data collector. Tuning the Jet Database Engine with registry settings can improve performance for large farms. Consult the Microsoft documentation about performance tuning for the Jet Database Engine. Back up both the registry and the Mf20.mdb file before changing the tuning parameters.

is useful to summarize frequencies in more detail. Specifying peak frequencies and vari ance in frequencies can help avoid problems with peak usage. In addition, importance of applications can be specified as response time limits so that physical designs are biased to wards critical applications.

Not only should a voice sound clear and crisp and be free from noticeable delay, but the service should be always available. Recall that the phone system almost never fails; contrast that with office computer networks, some of which seem to fail on a regular basis. If VoIP is to be a commercial challenge to established telephony networks, then the network must be rock solid. In other words, the five nines availability requirement must be met. Unlike earlier systems, today s VoIP solutions do offer reliability and resilience. Moreover, the solutions are designed to enable redundancy and load-sharing within the network. Therefore, individual network nodes are less likely to fail, and if a node does fail, then another node in the network can assume the load of the failed node. Of course, networks must be designed to take advantage of these capabilities. Building redundancy into a network, however, means that the network will be more expensive. Therefore, a balance must be struck between network cost and network quality. Finding the right balance is the responsibility of the network architect. Not only must a network be reliable, but it must also be scalable. In other words, it must be possible to increase the capacity of the networks to handle millions of simultaneous calls. The early VoIP systems did not scale to such capacities. Nowadays, however, VoIP systems can handle enormous demands. Some of today s VoIP gateway products, for example, can handle many gigabits per second of voice traffic with equipment that occupies just a single 19-inch shelf. An advantage of VoIP architectures is that they are relatively easy to start on a small scale and then expand as traffic demand increases. Standardized protocols enable small network nodes to be controlled by the same

In the program, pay special attention to the way the anonymous event handler is added to the event by the following code sequence: