Understanding Network Security Fundamentals

What is the primary purpose of a firewall in network security?

• To increase network speed

• To block unauthorized access

• To provide wireless connectivity

• To encrypt data

Which of the following is a common method used to secure a wireless network?

• Using a wired connection

• Disabling the SSID broadcast

• Increasing the signal strength

• Changing the network name

What does the acronym VPN stand for in network security?

• Virtual Private Network

• Verified Public Network

• Virtual Public Node

• Verified Private Node

Which protocol is commonly used to secure data transmitted over the internet?

• HTTP

• FTP

• HTTPS

• SMTP

What is the main function of an Intrusion Detection System (IDS)?

• To prevent data loss

• To detect unauthorized access

• To manage network traffic

• To provide internet access

Which of the following is a type of malware that encrypts files and demands payment for decryption?

• Virus

• Ransomware

• Spyware

• Adware

What is the purpose of a network security key?

• To unlock a device

• To secure a wireless network

• To increase bandwidth

• To monitor network traffic

Which of the following is a strong password characteristic?

• Contains only lowercase letters

• Is a common word

• Includes numbers and symbols

• Is less than 6 characters long

What is the role of encryption in network security?

• To compress data

• To convert data into a secure format

• To increase data size

• To delete data

Which of the following is a common sign of a phishing attack?

• Receiving an email from a known contact

• An email requesting personal information

• A slow internet connection

• A pop-up ad on a website