c# qr code generator source Exam Highlights in Visual C#.NET

Generation QR Code JIS X 0510 in Visual C#.NET Exam Highlights

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Before taking the exam, review the key points and terms that are presented in this chapter. You need to know this information.
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If you disable or delete an SMTP command, that command will be blocked by ISA Server. If a required command is disabled, SMTP messages will not flow through the ISA Server to the SMTP servers. By default, the SMTP filter allows all required SMTP command. If you install Message Screener on the ISA Server computer, you have to configure the SMTP server to listen only on the IP address assigned to the Internal network, and then configure the server publishing rule to forward all SMTP messages to
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9-55
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that IP address. You must also configure the SMTP server to forward all messages for the internal domain to the internal Exchange Server computers.
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You can configure the SMTP Message Screener to delete a message, hold a message, or forward a message to a specified mailbox if it meets the Message Screener criteria. Exchange Server 2003 also enables the option of using forms-based authentication when connecting to OWA. You cannot enable forms-based authentication on both the Exchange Server 2003 computer and ISA Server.
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Outlook Web Access (OWA) An Exchange Server feature that provides access to the mailboxes on an Exchange Server through a Web browser. OWA forms-based authentication A cookie-based authentication method that ensures that user credentials are not cached on the client computer after the user logs off, or after a timeout period expires. In addition, OWA forms-based authentication can be used to restrict whether users can view or download e-mail attachments. SMTP application filter Provides application-layer filtering that can be used to block buffer overflow attacks and to disable SMTP commands that are not required. SMTP Message Screener Provides application layer filtering that can be used to filter SMTP mail. The Message Screener can scan the messages and examine the attachments and then block or hold messages for later inspection.
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9-56
9
Integrating ISA Server 2004 and Exchange Server
Questions and Answers
Page 9-23
Lesson 1 Review
1. What criteria can the Message Screener use to filter e-mail messages (Choose all that apply.) a. IP address of the sending SMTP server b. Keywords in the message body c. Source SMTP address d. IP address of the destination SMTP server
B and C are correct. A and D are not correct because the Message Screener does not block messages based on IP addresses.
2. You have deployed ISA Server 2004 and configured access rules on your ISA Server 2004 to limit Internet access. You need to allow your internal SMTP server to send mail to the Internet. What steps must you take (Choose two.) a. Install the Message Screener on the ISA Server. b. Configure the SMTP server as a SecureNAT client. c. Create an access rule to allow SMTP traffic outbound. d. Install the Firewall Client software on the SMTP server. e. Enable the SMTP filter on ISA Server. f. Create an SMTP server publishing rule.
B and C are correct. You need to configure the SMTP server as a SecureNAT client and create an access rule to allow SMTP traffic outbound. A is incorrect because the Message Screener is used to block unwanted traffic. D is incorrect because the Firewall Client software is not required and should not be installed. E is incorrect because the SMTP filter allows you to filter SMTP commands, and F is incorrect because an SMTP publishing rule allows SMTP server to receive mail.
3. You have deployed ISA Server, and you are using it to publish the internal computers running Exchange Server as SMTP servers. You have configured both the SMTP application filter and Message Screener. You have just received a notification that a new virus has been detected on the Internet. The virus is spread by e-mail as an attachment named Clickhere.vbs. Programmers within the company frequently e-mail messages to each other with attachments with .vbs extensions, and you should not stop this. You need to protect your network from this virus. What should you do a. Configure the SMTP application filter to block all SMTP commands. b. Configure the SMTP application filter to block all MAIL FROM: commands.
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