3.5.5 Network security

• Network security ensures confidentiality, integrity, and availability of network resources
• Why is understanding network security threats important?

  Protect computer networks
• Malware is software designed to disrupt, damage, or gain unauthorized access to a computer system
• A Denial-of-Service (DoS) attack prevents legitimate users from accessing a system.


  True
• What does SQL injection exploit to modify data?

  Database vulnerabilities
• Man-in-the-Middle attacks intercept communication between two parties
• Encryption ensures data confidentiality during transmission and storage.


  True
• Security protocols ensure secure communication over a network.


  True
• What are common examples of security protocols?

  HTTPS, SFTP, SSH, TLS/SSL
• Which security protocol provides a secure way to transfer files?

  SFTP
• What is the purpose of network security?

  Protect data and networks
• Confidentiality in network security means only authorized users can access sensitive data.

  True
• What does integrity in network security ensure?

  Data remains accurate
• Availability in network security guarantees that network services are accessible when needed
• Network security is crucial for maintaining business operations in modern businesses.


  True
• What is the goal of phishing attacks?

  Obtain sensitive information
• What is the primary function of a firewall?

  Filter network traffic
• What does access control prevent unauthorized users from modifying?

  Critical data
• Intrusion Detection Systems (IDS) monitor network activity for suspicious behavior
• What does a VPN create to protect data from interception?

  Secure connection
• HTTPS encrypts data between a web server and a browser
• TLS/SSL is widely used for secure browsing
• What are the main differences between HTTPS and TLS/SSL?

  TLS is more secure