Network Security

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Computer ScienceSecondary Education

This lesson contains 88 slides, with interactive quizzes, text slides and 1 video.

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What does a packet filtering firewall use to make allow/deny decisions?

Source and destination IP addresses and ports.

User credentials

File extensions

Application protocols

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What is the primary purpose of a firewall?

To store user data

To provide physical security

To control incoming and outgoing network traffic.

To enhance system performance

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You are running Skype for Business to connect to an online meeting. While you have no trouble logging on, you are having problems with video as well as desktop sharing. Which of the following is the best course of action for resolving this issue?

Examine the DNS records to see if the zone is not configured correctly

Examine the firewall the see if it is blocking access to any of the Skype for Business Online websites

Check to see if any firewalls are blocking the ports used by audio, video, and desktop sharing

Make sure the user has access to the Internet

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In what ways does an operating system enhance network security?

Facilitating remote access and virtual private networks

Providing secure authentication and authorization mechanisms

Balancing network loads and optimizing data storage

Securing physical access to network infrastructure

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How does an operating system contribute to network security?

Implementing firewalls and intrusion detection systems

Optimizing network bandwidth and regulating data flow

Configuring network protocols and managing user accounts

Encrypting data transfer and securing wireless networks

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What is the role of an operating system in network security?

Monitoring network traffic and analyzing performance

Enforcing access control and protecting against malware

Processing data and managing network hardware

Providing user interfaces and running applications

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What is the primary function of a firewall in a network?

Amplifying Wi-Fi signals

Transferring files between devices

Assigning IP addresses

Blocking unauthorized access and malicious traffic

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