Network Security Fundamentals

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Questions and Answers

Which security measure is MOST effective in preventing attackers from moving laterally within a compromised network?

  • Using strong passwords and enforcing password complexity policies.
  • Regularly updating software and systems.
  • Implementing network segmentation. (correct)
  • Implementing multi-factor authentication (MFA).

A company wants to ensure that its employees can securely access internal resources when working remotely. Which of the following technologies would BEST achieve this?

  • Enforcing strict password policies.
  • Utilizing Network Address Translation (NAT).
  • Implementing a Wireless Local Area Network (WLAN).
  • Using a Virtual Private Network (VPN). (correct)

Which type of attack involves an attacker intercepting communication between two parties without their knowledge?

  • Man-in-the-Middle (MitM). (correct)
  • SQL Injection.
  • Cross-Site Scripting (XSS).
  • Distributed Denial-of-Service (DDoS).

Which of the following protocols is used to translate domain names to IP addresses?

<p>DNS (Domain Name System). (B)</p>
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Which OSI model layer is responsible for data representation and encryption?

<p>Presentation Layer. (C)</p>
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A network administrator notices unusually high traffic originating from a specific server, overwhelming the network. This scenario is MOST indicative of what type of attack?

<p>Distributed Denial-of-Service (DDoS). (B)</p>
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Which of the following is a characteristic of asymmetric-key cryptography?

<p>It uses different keys for encryption and decryption. (C)</p>
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Which of the following is the MOST secure protocol for securing wireless networks?

<p>WPA3. (C)</p>
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A company is concerned about unauthorized users accessing sensitive data. Which of the following security measures would provide the BEST protection for data confidentiality?

<p>Using encryption. (D)</p>
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Which network device operates at the Data Link Layer (Layer 2) of the OSI model and forwards data based on MAC addresses?

<p>Switch. (B)</p>
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Flashcards

Computer Network

A set of interconnected devices that can communicate and share resources.

Local Area Network (LAN)

Connects devices within a limited area, like a home or office.

Wide Area Network (WAN)

Spans a large geographical area, connecting multiple LANs.

Star Topology

All devices connect to a central hub or switch.

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TCP/IP

The foundational protocol suite for the Internet, providing reliable communication.

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DNS (Domain Name System)

Translates domain names (e.g., google.com) to IP addresses.

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IP Address

A unique numerical address assigned to each device on a network.

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Firewall

A security device that controls network traffic based on predefined rules.

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Malware

Malicious software, including viruses and ransomware.

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Phishing

Deceptive attempts to obtain sensitive information by disguising as a trustworthy entity.

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Study Notes

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