rdlc data matrix

rdlc data matrix

rdlc data matrix

rdlc data matrix

rdlc data matrix

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In this exercise, you copy the contents of a packet into a text file. Perform the exercise in Network Monitor while you are logged on to Computer1 as Administrator. 1. From the File menu, select Open. The Open dialog box appears, displaying the Ping Capture.cap file in the My Cap tures folder.

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source port of 1723 (0x6BB). This filter allows PPTP tunnel management traffic from the VPN server.

second part isn t evaluated unless the first part is true, it is never evaluated when denominator equals 0, so no divide-by-zero error occurs. On the other hand, since the && (and) is evaluated left to right, the following logically equivalent statement doesn t work:

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if ( ( ( item / denominator ) > MIN_VALUE ) && ( denominator != 0 ) ) ...

2. Select the Ping Capture file, and click Open. The Ping Capture.cap file appears in the Frame Viewer window. 3. In the summary pane, find a frame that lists ICMP under the Protocol heading. 4. Select this ICMP frame. 5. Press Ctrl+C to copy the frame. 6. Open the Notepad utility in Windows. The Untitled Notepad window opens. 7. In the Untitled Notepad window, press Ctrl+V to paste the frame into the new text file. The complete data contents of the copied frame are pasted into the window. Notice how the first line contains all of the fields, in sequence, of the summary pane in the Frame Viewer window. Next, the bulk of the pasted output, about 40 lines, corresponds to the information from the details pane in the Frame Viewer window. Here, all of the details pane information is expanded, and none of the protocol headers are collapsed into a summary form. Finally, the last group of lines of the pasted output represents the hex data from the hexadecimal pane of the Frame Viewer window. 8. In Notepad, press Ctrl+S to save the file. The Save As dialog box appears. 9. Using the navigation buttons and folder icons available within the dialog box, adjust the target folder so that the file will be saved in \Desktop\My Docu ments\My Captures. Do not save the file yet. 10. In the Encoding drop-down list box, select Unicode. 11. In the File Name text box, replace *.txt by typing ICMP frame, and then click Save. 12. Close the ICMP Frame.txt Notepad window. 13. In Network Monitor, from the File menu, select Exit to quit Network Monitor. If you are prompted to save entries in your address database, click No. 14. Log off Computer1.

The following questions are intended to reinforce key information presented in this lesson. If you are unable to answer a question, review the lesson materials and try the question again. You can find answers to the questions in the Questions and Answers section at the end of this chapter.

destination port of 1723 (0x6BB). This filter is required only when the VPN server is acting as a VPN client (a calling router) in a site-to-site VPN connection. This filter should be used only in conjunction with PPTP packet filters as described in the VPN Server in Front of the Firewall section and configured on the VPN server s network perimeter interface. By allowing all traffic from the VPN server to TCP port 1723, there exists the possibility of network attacks from sources on the Internet using this port.

In this case, item / denominator is evaluated before denominator != 0. Consequently, this code commits the divide-by-zero error. Java further complicates this picture by providing logical operators and conditional operators. Java and C++ s && and <;$LB><;$LB> operators function similarly. Java s logical & and <;$LB> operators do not necessarily short-circuit the evaluation of the right-hand term when the left-hand term determines the truth or falsity of the expression. In other words, in Java, this is safe:

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