Free SCP SC0-451 Exam Actual Questions & Explanations

Last updated on: Jun 1, 2026

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Question No. 1

Your network is a mixed environment of Windows, Linux, and UNIX, computers. The routers are primarily Cisco and the network uses a T-1 to connect to the Internet. You are experimenting with setting up a mail server in a production environment for internal use only. You do not want this mail server to receive any requests from anywhere but the internal network. Therefore you have decided to block incoming SMTP traffic at the Firewall. Which port will you block at the Firewall?

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Correct Answer: B

Question No. 2

You are configuring the rules on your firewall, and need to take into consideration that some clients in the network are using automatic addressing. What is the IP address range reserved for internal use for APIPA in Microsoft networks?

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Correct Answer: B

Question No. 3

You are working on your company's IPTables Firewall; you wish to create a rule to address traffic using ports 1024 through 2048. Which of the following would you use during the creation of your rule?

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Correct Answer: E

Question No. 4

You have been given the task of building the new wireless networks for your office. What wireless standard allows for up to 54 Mbps transmission rates, but is not compatible with 802.11b?

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Correct Answer: E

Question No. 5

Your network traffic has increased substantially over the last year, and you are looking into your caching options for frequently visited websites. What are the two types of caching that ISA Server 2006 supports?

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Correct Answer: A, B