Understanding Network Security Fundamentals

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

• To encrypt data

• To block unauthorized access

• To detect malware

• To manage network traffic

Which of the following is a common method used by firewalls to filter traffic?

• Packet sniffing

• Packet filtering

• Data mining

• Data encryption

What is the main purpose of encryption in data protection?

• To increase data size

• To make data unreadable to unauthorized users

• To compress data

• To speed up data transmission

Which of the following is an example of symmetric encryption?

• RSA

• AES

• DSA

• ECC

What does an Intrusion Detection System (IDS) do?

• It prevents all types of network attacks

• It detects and alerts on suspicious activities

• It encrypts sensitive data

• It manages user access

Which of the following is a type of malware?

• Firewall

• Antivirus

• Trojan horse

• Encryption key

What is the primary goal of threat analysis in network security?

• To increase network speed

• To identify and assess potential security threats

• To reduce data storage costs

• To improve user interface design

Which of the following is a characteristic of a strong password?

• Contains only lowercase letters

• Is at least 8 characters long and includes numbers and symbols

• Is the same as the username

• Contains only numbers

What is the role of a Virtual Private Network (VPN) in data protection?

• To increase internet speed

• To provide a secure connection over the internet

• To block malware

• To manage network traffic

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

• Receiving an email from a known contact

• An email requesting personal information with a sense of urgency

• A slow internet connection

• A pop-up ad on a website