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Security Measures

5 minutes 5 Questions

Security measures are essential components of network design, as they protect sensitive data, maintain the integrity of the network, and minimize the risk of unauthorized access. Ensuring proper security measures are in place can involve physical security (e.g., securing access to network equipment and facilities), logical security (e.g., authentication, authorization, and encryption), and operational security (e.g., security policies, network monitoring, and incident response). Some key security technologies include firewalls, virtual private networks (VPNs), intrusion detection and prevention systems (IDS/IPS), and network access control (NAC) mechanisms.

CompTIA Network+ Exam: Understanding Security Measures

Security measures are integral to network design in the CompTIA Network+ exam. Here's a complete guide to help you understand this important concept:

Why it's important: Implementing security measures is crucial for protecting a network from various threats like unauthorized access, data loss, and more. It ensures optimal network uptime and performance while safeguarding both user and company data.

What it is: Security measures encompass various strategies and tools to protect network integrity. This could include firewall configuration, access control lists, enforcing strong password policies, intrusion detection systems, and more.

How it works: Security measures work by establishing protective barriers, monitoring network activity, detecting anomalies and restricting access to only authorized personnel.

How to Answer Questions: Ensure you understand and can define key security measures and their respective functions. Be ready to explain how different security measures work and their benefits in practical scenarios. Exam Tip: Look for keywords in the questions which will hint at the specific security measure being referred to. It could be a wireless network, a cloud infrastructure, or an internal corporate network.

Answering Questions on Security Measures: Use the process of elimination if you're unsure. Often, the wrong answer choices will be about security measures unrelated to the given scenario. Also, use insights from other study topics—network topologies, OSI model layers, etc.—to make educated guesses.

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CompTIA Network+ - Network Design Example Questions

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Question 1

A network administrator receives notice that outside attackers are stealing company data. The internal network is air-gapped and secure. What is the best option?

Correct Answer: Inspect the outgoing data from the network

Inspecting the outgoing data from the network is the most effective way of dealing with this problem. This allows the network administrator to monitor the traffic and identify any unusual patterns or unauthorized data transfers, which could indicate that an attacker is trying to steal company data. On the other hand, upgrading all the hardware, changing all user passwords, or implementing new antivirus software may not necessarily prevent data theft, especially if the attackers have already gained access to the network.

Question 2

An employee is having trouble connecting to the company VPN. The VPN authentication method is set to use certificates. What is the most likely cause of the problem?

Correct Answer: Expired or invalid certificate

The most likely cause of the problem is an expired or invalid certificate. VPNs that use a certificate-based authentication method require a valid certificate to establish a secure connection. If the certificate is expired or invalid, the VPN connection will fail. As for the other options: A weak Internet connection could potentially cause issues with using the VPN, but this isn't directly tied to the VPN's authentication method. An employee's device being out of storage space wouldn't directly affect their ability to authenticate with the VPN. Lastly, while using an unsupported VPN client can cause connection issues, this again doesn't inherently tie to certificate-based authentication issues. Therefore, the most probable issue directly tied to certificate-based authentication would be an expired or invalid certificate.

Question 3

A network engineer notices that multiple unauthorized devices have connected to the company's wireless network. What security measure should be taken to prevent unauthorized access?

Correct Answer: Implement WPA3 and use strong pre-shared keys

The best measure against unauthorized access to the company's wireless network is to 'Implement WPA3 and use strong pre-shared keys'. WiFi Protected Access 3 (WPA3) is the latest and most secure wireless network encryption method. The use of strong pre-shared keys (PSK) increases the difficulty for unauthorized devices to connect as it would require knowledge of the key. 'Conduct regular device audits' is a reactive measure and won't necessarily prevent unauthorized access in real-time. 'Disable the wireless network' is not practical in most business environments as it would disrupt operations. 'Limit the number of devices that can connect to the wireless network' would not ensure that all the devices are authorized, as unauthorized devices could potentially connect before authorized ones.

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