Exploring Network Security Concepts

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• To increase the number of connected devices.

• To reduce the cost of network infrastructure.

Answer explanation

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Define the term 'firewall' in the context of network security.

• A firewall is a physical barrier that prevents fire from spreading in buildings.

• A firewall is a network security device that monitors and controls network traffic based on security rules.

• A firewall is a software application that enhances the speed of internet connections.

• A firewall is a type of computer virus that spreads through networks.

What are the differences between symmetric and asymmetric encryption?

• Symmetric encryption requires multiple keys for different users.

• Symmetric encryption is faster than asymmetric encryption but less secure.

• Asymmetric encryption uses a single key for both encryption and decryption.

• Symmetric encryption uses one key for both encryption and decryption, while asymmetric encryption uses a pair of keys (public and private).

Explain the concept of a VPN and its purpose.

• A VPN is a service that creates a secure and encrypted connection over the Internet, protecting user privacy and data.

• A VPN is a type of antivirus software that removes malware from devices.

• A VPN is a social media platform that allows users to share their location.

• A VPN is a hardware device that boosts internet speed by connecting to multiple servers.

What is a DDoS attack and how does it affect network security?

• A DDoS attack is a type of malware that infects network devices.

• A DDoS attack is an attempt to make a network service unavailable by overwhelming it with traffic, significantly affecting network security by disrupting service and potentially leading to data breaches.

• A DDoS attack is a method to enhance network performance by distributing traffic evenly.

• A DDoS attack is a security measure that protects against unauthorized access.

Describe the role of an Intrusion Detection System (IDS).

• An IDS prevents all unauthorized access to the network.

• An IDS manages user permissions and access rights.

• An IDS is used solely for data encryption.

• An IDS detects and alerts on unauthorized access or anomalies in network traffic.

What is the significance of a security policy in an organization?

• The significance of a security policy in an organization is to provide a structured approach to managing security risks and protecting information assets.

• It serves as a guideline for employee dress code.

• It outlines the company's marketing strategy.

• It defines the organizational structure and hierarchy.

How do malware and viruses differ in terms of network security threats?

• Viruses can only infect hardware, not software.

• Malware is always a virus that spreads through email.

• Malware is a broad category of malicious software; viruses are a specific type of malware that replicate by infecting other files.

• Malware and viruses are the same thing.

What is the purpose of network segmentation?

• To improve security and performance by isolating network segments.

• To increase network complexity for better management.

• To reduce the number of devices on a network.

• To allow unrestricted access between all devices.

Explain the concept of two-factor authentication and its importance.

• It is a method to encrypt data during transmission.

• Two-factor authentication only requires a password to access accounts.

• Two-factor authentication is primarily used for online shopping.

• Two-factor authentication enhances security by requiring two forms of verification, reducing the risk of unauthorized access.