PART I PART I PART I in Java

Add QR in Java PART I PART I PART I

Figure 3.11 ISDN provides direct digital subscriber access to the network over existing 2-wire and 4-wire

The first line uses the Default format, and the second line uses the Record/Structure format. As you might expect, you can also watch an object of a class. When you watch an object, you are shown the current value of any data that is contained within the object. As with structures and unions, if you use the Record/Structure format specifier, the names of each data item are also displayed. When you are watching an object of a class, all private, protected, and public data is displayed. For example, if the previous program is changed as shown here:

STEP 3: Fold braid back; insert ferrule inside braid; cut dielecric back 13/64"; tin conductor 13/64" STEP 2: Strip outer jacket additional 5/16" 3/4" 5/16"

Determine and validate connectivity between any two stations on the ring Determine and validate transit path operation for any service class Provide a mechanism to help in misorder prevention Provide performance monitoring parameters

volume to moles. Think of the world s monetary systems. Why is it important to be able to change from one unit to another if you are traveling in a foreign country

Depending upon the severity of the risk, mitigation could also take the form of additional (or improved) controls, even prior to (or despite the results of) the audit itself. The new or changed control may be major or minor, and the time and effort required to implement it could range from almost trivial to a major project. The cost and effort required to implement a new control (or whatever the countermeasure is that is designed to reduce the probability or impact of a threat) should be determined before it is implemented. It probably does not make sense to spend $10,000 to protect an asset worth $100. NOTE The effort required to implement a control countermeasure should be commensurate with the level of risk reduction expected from the countermeasure. A quantified risk analysis may be needed if the cost and effort seem high, especially when compared to the value of the asset being protected.

3. Before resolving the name request, the NetScaler machine has to calculate the closest site. It does this either statically with a predefined lookup table or dynamically based on the round-trip time between the sites and the client s local DNS server. Based on the NetScaler measurements, the Fort Lauderdale site has the shortest round-trip time. The IP address of the Fort Lauderdale Web Interface server is returned to the client s local DNS server. 4. The client s local DNS server returns the IP address to the client. 5. The client now connects to the Web Interface server. The NetScaler Application Switch selects the particular Web Interface server, based on the configured loadbalancing method. 6. Web Interface contacts the first server in the server location settings for Web Interface. In this case, the first server in the list is the local data collector in Fort Lauderdale. 7. The data collector returns a list of applications to which the user has access and displays it in the browser. 8. The user clicks an application. 9. Web Interface contacts the first server in the server location list again and requests the address for the least-loaded server. Because XYZ is using zone preference and failover, the data collector attempts to connect the user to Fort Lauderdale 10. The ICA connection now launches to the returned server address. Figure 19-20 is similar to Figure 19-19 but is an example of an actual outage. If the Fort Lauderdale site is down, the connection process works as follows: 1. The user opens a browser on the client device and enters the FQDN for the Web Interface Server, WI.XYZ.COM. This request is sent to the local DNS server. 2. The client s local DNS server gets the IP address of the XYZ corporate DNS server from a root DNS server. The client s local DNS server contacts the IP address returned by the root DNS server. This returned address is the address of the NetScaler DNS proxy in Fort Lauderdale. 3. Because the Fort Lauderdale NetScaler switch is offline, the client s local DNS server tries the backup XYZ DNS server, which is the Redmond NetScaler switch. 4. Before resolving the name request, the NetScaler machine has to calculate the closest site. It does this either statically with a predefined lookup table or dynamically, based on the round-trip time between the sites and the client s local DNS server. Based on the NetScaler measurements, the Fort Lauderdale site has the shortest round-trip time, but the Fort Lauderdale site is offline. Because Fort Lauderdale is offline, NetScaler returns the IP address of the Redmond Web Interface server to the client s local DNS server.