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The following questions will help you measure your understanding of the material presented in this chapter. Read all the choices carefully, as there may be more than one correct answer. Choose all correct answers for each question.
1. | Define NFuse.
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2. | You have just created a custom NFuse Web site using the Web Site Wizard. On a new desktop PC running Windows 2000, you browse to the NFuse Web site using Internet Explorer 5.0. The Web-based ICA Client installation pop-up window appears stating that you do not have the latest ICA Client. However, when you click the link to install the ICA Client, it brings up a Page Not Found notice. What could be the cause of this?
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3. | What are the components that make up the three tiers of NFuse?
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4. | NFuse is a Web-enabled version of what program?
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5. | You have created a custom Web site using the Web Site Wizard. Your Unix users are complaining that they get the Web-based ICA Client Installation window every time they return to the NFuse login page. What can you do to fix this problem?
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6. | The NFuse Web Site Wizard installation is not installed with the NFuse Web Server Extensions. Where can this executable be found?
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7. | What Web server component will authenticate users to a Citrix server farm?
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8. | What three items can you use to call and use NFuse Java objects?
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9. | Your company has two Citrix server farms that they want to be integrated into one NFuse page. Both Citrix server farms reside in the same domain. What two ways could you enable the NFuse page to force domain authentication information?
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10. | Which of the following are functions of the Citrix server farm with an NFuse system?
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Answers
1. | þ D is the correct answer. NFuse is a portal software that allows users to access published applications through an Internet or intranet Web site. ý A is incorrect because applications are accessed through a Web browser and not through Program Neighborhood. B is wrong because NFuse does not allow administrators to create server farms. C is incorrect because NFuse is not a Microsoft technology. |
2. | þ D is correct. If during the NFuse Web Server Extensions setup you did not supply an ICA Client CD or copy the contents of the CD's ICAWEB folder to the NFuseClients folder, the Web-based ICA Client installation will fail. ý A is wrong because Internet Explorer 5.0 is supported. B is wrong because the Web server hasn't reached a point where it would need to contact a Citrix server. C is incorrect because this isn't an option using the Web Site Wizard. |
3. | þ B, C, and D are correct. All three make up the three tiers that NFuse requires. ý A is incorrect because it is not a component of NFuse; it is a component of the ICA Client device. |
4. | þ A is correct. NFuse is essentially a Web-enabled version of Program Neighborhood. ý B is wrong because the ICA Client device uses the Citrix ICA Client to initiate ICA sessions to the Citrix servers. C and D are simply incorrect. |
5. | þ C is correct. The Web-based ICA Client Installation piece can correctly detect the presence of the ICA Client on only the 32-bit and 16-bit Windows platforms. For all other platforms, this window will pop up until the Do Not Show This Window At Login check box has been marked. ý A is wrong because even if you do install the Web-based ICA Client, the Web-based ICA Client Installation code cannot correctly detect the presence of an ICA Client on the Unix platform. B is incorrect because even if you remove the NFuseClients folder from the wwwroot on the Web server, this pop-up box will remain. D is wrong because placing a check in the check box will stop the page from popping up on subsequent visits to the login page. |
6. | þ B is correct. The NFuse Web Site Wizard is a separate installation from the NFuse Web Server Extensions and may be installed on any 32-bit Windows machine. ý A is wrong because not only can it be downloaded from the Citrix Web site, but it also can be found on the NFuse CD. C is wrong because the Web-based ICA Clients reside under the NFuseClients folder under the wwwroot on the Web server. D is incorrect because it does not install with the ICA Client program. |
7. | þ A is correct. The NFuse Java objects perform several functions, one of which is assisting in authenticating users to a Citrix server farm. ý B is incorrect because the Web Site Wizard plays no part in Citrix server farm authentication. C is wrong because Program Neighborhood is an ICA Client device component, not a Web server component. D is incorrect because these are examples of two Web-server side scripts that will call NFuse Java objects but do not perform the function of authentication. |
8. | þ A, B, and D are correct. These three items allow an administrator to call and execute NFuse Java objects.ý C is incorrect because Notepad cannot be used to make NFuse Java object calls. |
9. | þ B and C are correct. During the custom Web site creation process using the NFuse Web Site Wizard, you have the ability to force domain information for explicit logins and allow guest logins where the domain is specified. ý A is incorrect because the Citrix XML Service cannot be configured to pass specific domain information for authentication purposes. D is incorrect because all connection information used through NFuse is passed through the ICA file customized for the ICA Client, not the ICA Clients local settings. |
10. | þ A and B are correct. The Citrix server farm's role within an NFuse system is to host the published applications and provide the Web server application set information for users authenticating themselves. ý C and D are incorrect because these are roles of the Web server with an NFuse system. |
11. | What TCP port is used by default for SSL communication?
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12. | Which of the following ICA Clients are capable of supporting 128-bit encryption?
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13. | Your company wants to implement an NFuse Web site that will bring the published application information from two server farms, a MetaFrame XP 1.0 farm and a MetaFrame 1.8 farm, together on a single page. How would you create this Web site to allow for ticketing?
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14. | You just installed a Citrix MetaFrame XP for Windows 1.0 server farm with all of the default ports left intact and created a custom NFuse Web site to publish your applications via the Internet. On your firewall, you opened ports 80 for HTTP traffic and 443 for ICA communication. When testing connectivity through the NFuse site locally, everything works fine, though your remote users get no connectivity through the firewall. What do you need to do to fix the problem?
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15. | Which of the following is NOT a function performed by the NFuse Java objects? ýChoose all that apply.)
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16. | You are the administrator of a MetaFrame XP server farm. Your company wants you to create an NFuse Web site allowing for secure communications between the Web server and the Citrix server farm. Which of the following must you do to accomplish this?
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17. | You are using NAT on your firewall and have configured an alternate address on your Citrix server to allow for remote connectivity. You find that your remote users cannot connect when entering through the NFuse Web site. On your firewall, you have opened TCP ports 80 and 1494 to allow for Web and ICA traffic. What else could be the problem?
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18. | You are the administrator of a single server implementation of a Web server running NFuse with Citrix MetaFrame XP. Your single server is accessible via the Internet. Your company does not have a firewall and can spend no more additional dollars on this project. What should you do to secure your single server as best you can?
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19. | Which of the following are not supported platforms for an NFuse web server? ýChoose all that apply.)
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20. | NFuse objects are Java objects that are ____ compliant?
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Answers
11. | þ C is correct. By default, all SSL communication is done through TCP port 443. ý A is wrong because it is the default port for ICA session communication. B is incorrect because it is the port for Citrix Management Console-to-MetaFrame XP server communication. D is wrong because it is the default port for HTTP, or Web, traffic. |
12. | þ B, C, and D are correct. These three clients are all capable of using 128-bit encryption. ý A is incorrect because Unix does not have 128-bit RC5 encryption support. |
13. | þ D is correct. A custom Web site created using the Web Site Wizard that allows for ticketing will enable the Web server for ticketing. All Citrix MetaFrame XP 1.0 servers have the capability of using ticketing by default, but Citrix MetaFrame 1.8 servers must have FR1 installed and licensed on all servers participating in the farm. ý A is incorrect because SP2 and FR1 need to be installed and activated on the MetaFrame 1.8 server farm. B is incorrect because FR1 needs to be installed on the MetaFrame 1.8 servers, not the XP servers. C is incorrect because FR1 needs to be installed on all servers in the farm, not just one. |
14. | þ C is the correct answer. Local users have no problem connecting to the NFuse Web site and running their applications, which is an indication that both the Web server and Citrix servers are functioning properly. To have allowed users to connect initially, only port 80 for HTTP traffic and 1494 for ICA traffic needed to be opened. Port 443 is used for SSL communication. ý A, B, and D are all incorrect because if port 1494 is not opened on the firewall, no ICA session can be established. Though incorrect, each one is a good idea of things to do once connectivity has been established. |
15. | þ A is correct in that it is not a function of the NFuse Java objects. This is an example of what SSL encryption on a Web server can provide. ý B, C, and D are incorrect because they are all functions that NFuse Java objects perform. |
16. | þ D is correct. To allow for secure, encrypted communication between the Web server and the Citrix server farm, a single Citrix server must be configured as an SSL Relay server. In addition, the SSL Relay server information must be entered in when creating a custom Web site using the Web Site Wizard. ý A is incorrect because ticketing allows for secure authentication information between all three tiers. B is incorrect because HTTPS communication exists between the Web server and the Web browser. C is wrong because the SSL Relay server information needs to be entered into the custom Web site for SSL Relay to work. |
17. | þ B is correct. The remote users must specify the alternate address of the Citrix server to connect through the firewall running NAT. In this scenario, the Citrix server will return its internal IP address which the users will not be able to connect to. ý A is incorrect because TCP port 443 is not needed in this scenario. C is incorrect because substitution tags only exist in the template ICA files, not the customized ones passed down to the ICA Client device. D is incorrect because the syntax for the substitution tag is wrong. |
18. | þ A and D are correct. By allowing ticketing, authentication information is not passed through the ICA file. In addition, publishing all applications to require 128-bit encryption will allow for secure communications over the ICA connection between your ICA Client device and your Citrix server. ý B is wrong because ticketing would be a benefit in this scenario. C is incorrect because NAT is a feature of a firewall, not a Citrix server. |
19. | þ B and C are correct in that they are not a supported platform for an NFuse Web server. ý A and D are incorrect because they are supported platforms for an NFuse Web server. |
20. | þ B is correct. Java objects are Component Object Model (COM) compliant. COM is a method in which different software components can communicate with one another, regardless of hardware, operating system, or language being used. ý A is incorrect because JSP is a form of Web-side scripting. C is wrong because the XML service is used in conjunction with Java objects. D is incorrect because it is also a form of Web-side scripting. |
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