Syngress - Eleventh Hour Network+ Exam N10-004 Study Guide (11 ...

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172 CHAPTER 10 Network Troubleshooting the necessary change on the DHCP server, and most of your clients were updated automatically. After you make this change, you receive a call from one user who no longer is able to browse the Internet. You examine the TCP/IP configuration of her LAN connection (see Figure 10.3). How can you configure this workstation with the correct default gateway information (Each choice represents a complete solution. Choose two.) A. Delete the manually configured information and select Obtain an IP address automatically B. Run ipconfig/renew from the command prompt C. Manually update the IP address of the default gateway D. Run ipconfig/release from the command prompt FIGURE 10.3 Sample TCP/IP configuration
Troubleshooting the Application Layer 173 4. You are the administrator of the network shown in Figure 10.4. The firewall in the exhibit was installed by an outside consultant a few weeks ago. Once a month, one of your company’s employees needs to access the FTP site of one of your company’s business partners, ftp.airplanes.com to download large PDF files containing product marketing information. You receive a help desk call from this employee, stating that he is now unable to access this FTP site. The last time he performed this task was before the firewall was installed, and he says that it worked fine then. You are able to ping the ftp.airplanes.com DNS name, and you can access www.airplanes.com, which is located on the same physical machine. What is the best way to restore this employee’s access to the ftp.airplanes.com FTP site A. Configure a firewall rule allowing traffic to TCP ports 20 and 21 B. Configure a firewall rule allowing traffic to TCP ports 25 and <strong>11</strong>0 C. Configure a firewall rule allowing all TCP traffic to this employee’s workstation D. Configure a firewall rule allowing traffic to TCP ports 80 and 443 To the Internet... Subnet C Gateway: 192.168.3.1 Subnet D Gateway: 192.168.4.1 Router B Computer 2 Computer 1 192.168.3.102 192.168.3.101 255.255.255.0 255.255.255.0 Subnet A Gateway: 192.168.1.1 Computer 3 192.168.4.100 255.255.255.0 Subnet B Gateway: 192.168.2.1 Computer 4 192.168.4.101 255.255.255.0 Router A Computer 5 192.168.1.101 255.255.255.0 Computer 6 192.168.1.102 255.255.255.0 Computer 7 192.168.2.100 255.255.255.0 Computer 8 192.168.2.101 255.255.255.0 FIGURE 10.4 Sample network topology
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xii About the Authors Technical Edi
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Internet Access Methods 113 EXAM WA
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