Network Security Measures: Protect Your Data and Networks

Question 1

Which of the following is a type of network security attack that aims to prevent authorized access to data or systems, often by flooding the target with excessive traffic?

Accepted Answer

DoS (Denial of Service)

Answer

Malware

Answer

Phishing

Answer

Man-in-the-Middle

Question 2

Which of the following protocols is specifically designed to provide both confidentiality and integrity for data transmitted over networks?

Accepted Answer

SSL (Secure Sockets Layer)

Answer

TCP (Transmission Control Protocol)

Answer

UDP (User Datagram Protocol)

Answer

FTP (File Transfer Protocol)

Question 3

What type of vulnerability can occur when outdated software or systems lack the latest security updates?

Accepted Answer

Zero-day vulnerability

Answer

SQL injection vulnerability

Answer

Cross-site scripting (XSS) vulnerability

Answer

Buffer overflow vulnerability

Question 4

What type of malicious software is designed to encrypt files on a victim's computer, demanding a ransom payment to restore access to the data?

Accepted Answer

Ransomware

Answer

Trojan horse

Answer

Virus

Answer

Worm

Question 5

What is the primary purpose of a digital certificate in the context of network security?

Accepted Answer

To authenticate the identity of a website or entity

Answer

To encrypt data during transmission

Answer

To prevent unauthorized access to a network system

Answer

To detect and block malicious software

Question 6

Which of the following network security tools is designed to inspect network traffic and block malicious or unwanted traffic based on predefined rules and criteria?

Accepted Answer

Firewall

Answer

Intrusion detection system (IDS)

Answer

Virtual private network (VPN)

Answer

Proxy server

Question 7

Which of the following network attacks involves overwhelming a target system with excessive traffic to disrupt its services?

Accepted Answer

Denial-of-service (DoS) attack

Answer

Malware attack

Answer

Phishing attempt

Answer

Man-in-the-middle (MitM) attack

Question 8

What is the primary goal of deploying a firewall?

Accepted Answer

Preventing unauthorized access to a network

Answer

Encrypting data transmitted over a network

Answer

Detecting and removing malware from a computer system

Answer

Creating a backup copy of important data

Question 9

Which security protocol is commonly utilized to establish a secure communication channel over the internet?

Accepted Answer

HTTPS protocol

Answer

HTTP protocol

Answer

TCP/IP protocol

Answer

SMTP protocol

Question 10

What is the recommended practice for safeguarding against phishing scams?

Accepted Answer

Using strong passwords and changing them regularly

Answer

Clicking on suspicious links found in emails

Answer

Providing personal information on unfamiliar websites

Answer

Opening email attachments from unknown senders

Question 11

Which type of vulnerability scanner monitors network traffic to identify potential security vulnerabilities?

Accepted Answer

Network-based scanner

Answer

Host-based scanner

Answer

Wireless scanner

Answer

Malware scanner

Question 12

What is the primary purpose of intrusion detection systems (IDS)?

Accepted Answer

Detecting and responding to security breaches

Answer

Preventing unauthorized access to a network

Answer

Encrypting data in transit

Answer

Creating backups of important data

Question 13

What is the intended purpose of encryption in data communications?

Accepted Answer

Ensuring the confidentiality of data

Answer

Preventing data loss

Answer

Improving network performance

Answer

Detecting network attacks

Question 14

Which security threat involves attackers posing as legitimate entities to gain access to sensitive information?

Accepted Answer

Social engineering

Answer

Phishing

Answer

Malware

Answer

DoS attack

Question 15

What is the most effective practice to minimize the risk of data breaches caused by insiders?

Accepted Answer

Employing all of the above measures

Answer

Implementing stringent access controls

Answer

Providing security awareness training to employees

Answer

Regularly monitoring network activity

Question 16

Which protocol ensures secure communication over the internet by encrypting data?

Accepted Answer

HTTPS

Answer

HTTP

Answer

FTP

Answer

TELNET

Question 17

Which security measure involves regularly creating copies of critical data to protect against data loss?

Accepted Answer

Data backup

Answer

Access control

Answer

Data encryption

Answer

Vulnerability assessment

Question 18

What is a best practice for protecting against phishing attacks that target sensitive information?

Accepted Answer

Being cautious of unsolicited emails and links

Answer

Using strong passwords

Answer

Disabling pop-ups

Answer

Installing antivirus software

Question 19

Which method of cryptography utilizes two distinct keys for encryption and decryption?

Accepted Answer

Asymmetric-key

Answer

Symmetric-key

Answer

Hashing

Answer

Digital signature

Question 20

What is the primary function of a network intrusion detection system (IDS)?

Accepted Answer

To monitor and detect potential network attacks

Answer

To prevent network attacks from occurring

Answer

To encrypt network traffic

Answer

To manage network access

Question 21

What is the main purpose of a virtual private network (VPN)?

Accepted Answer

To create a secure, private network connection over a public network

Answer

To encrypt data in transit

Answer

To prevent network attacks

Answer

To manage network access

Question 22

Which tool is commonly used for performing vulnerability assessments?

Accepted Answer

Nmap

Answer

Wireshark

Answer

Metasploit

Answer

John the Ripper