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Exam 6: Network Security

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Question 1

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The OSI model breaks networking steps down into a series of six layers.

A) True
B) False

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Question 2

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A ____ is a computer or an application program that intercepts a user request from the internal secure network and then processes that request on behalf of the user.

A) proxy server
B) DNS server
C) VPN server
D) telnet server

E) A) and B)
F) None of the above

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Question 3

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Workgroup switches must work faster than core switches.

Layer 5 of the OSI model is the ____ layer.

A(n) ____ can block malicious content in "real time" as it appears without first knowing the URL of a dangerous site.

____ provides remote users with the same access and functionality as local users through a VPN or dial-up connection.

____ is a technology that can help to evenly distribute work across a network.

IP addresses are ____-bit addresses.

List and describe two advantages of a proxy server.

What are the two TCP/IP protocols used by e-mail systems to send and receive messages?

Describe all-in-one network security appliances.

Behavior-based monitoring attempts to overcome the limitations of both anomaly-based monitoring and signature-based monitoring by being more adaptive and proactive instead of reactive.

____ is a technique that allows private IP addresses to be used on the public Internet.

A basic level of security can be achieved through using the security features found in network hardware.

____ IP addresses are IP addresses that are not assigned to any specific user or organization.

A ____ is a standard network device for connecting multiple Ethernet devices together by using twisted-pair copper or fiber-optic cables in order to make them function as a single network segment.

A ____ allows scattered users to be logically grouped together even though they may be attached to different switches.

Each operation in a computing environment starts with a ____.

List and describe three advantages to subnetting.

Internet ____________________ filters monitor Internet traffic and block access to preselected Web sites and files.