A+ 1102 Day 4b ITSA 2.2 Compare wireless sec protocols and Auth

Which wireless security protocol uses a pre-shared key (PSK) for authentication and encryption?

• WEP
• WPA
• WPA2
• WPA3

Answer explanation

WPA2 (Wi-Fi Protected Access 2) uses a pre-shared key (PSK) for authentication and encryption. It provides stronger security compared to WEP (Wired Equivalent Privacy) and is widely used in wireless networks.

True or False: WPA3 uses the same encryption algorithm as WPA2.

• True
• False

Answer explanation

False. WPA3 (Wi-Fi Protected Access 3) introduces a new encryption algorithm called Simultaneous Authentication of Equals (SAE), also known as Dragonfly, which provides stronger security compared to the older encryption algorithm used in WPA2.

Which authentication method requires users to enter a username and password to access a wireless network?

• MAC Filtering
• WPS
• WPA Enterprise
• Captive Portal

Answer explanation

WPA Enterprise authentication requires users to enter a username and password (credentials) to access a wireless network. It utilizes an authentication server, such as RADIUS (Remote Authentication Dial-In User Service), for centralized authentication and offers stronger security than pre-shared keys.

What wireless security protocol encrypts data using Advanced Encryption Standard (AES) encryption?

• WEP
• WPA
• WPA2
• WPA3

Answer explanation

WPA2 (Wi-Fi Protected Access 2) encrypts data using Advanced Encryption Standard (AES) encryption, providing stronger security compared to the older encryption algorithms used in WEP (Wired Equivalent Privacy) and WPA (Wi-Fi Protected Access).

True or False: WPA3 supports simultaneous authentication of multiple devices.

• True
• False

Answer explanation

True. WPA3 (Wi-Fi Protected Access 3) supports simultaneous authentication of multiple devices using the Simultaneous Authentication of Equals (SAE) protocol, also known as Dragonfly. This allows multiple devices to authenticate concurrently, improving efficiency and security.

Which wireless security protocol uses a four-way handshake for key exchange during the authentication process?

• WEP
• WPA
• WPA2
• WPA3

Answer explanation

WPA2 (Wi-Fi Protected Access 2) uses a four-way handshake for key exchange during the authentication process. This handshake helps establish a secure connection between the client device and the access point, ensuring confidentiality and integrity of data transmission.

What authentication method involves pressing a button on the router and device to establish a secure connection?

• MAC Filtering
• WPS
• WPA Enterprise
• Captive Portal

Answer explanation

Wi-Fi Protected Setup (WPS) involves pressing a button on the router and device to establish a secure connection without the need to enter a password manually. While convenient, WPS has security vulnerabilities and is often disabled for better security.

True or False: MAC filtering provides encryption for wireless communication.

• True
• False

Answer explanation

False. MAC filtering (Media Access Control filtering) is not an encryption method but rather an access control mechanism that restricts access to a wireless network based on the MAC addresses of devices. It does not provide encryption for wireless communication.

Which wireless security protocol is considered the least secure and should be avoided in modern networks?

• WEP
• WPA
• WPA2
• WPA3

Answer explanation

WEP (Wired Equivalent Privacy) is considered the least secure wireless security protocol and should be avoided in modern networks. It is vulnerable to various attacks and offers minimal protection for wireless communication compared to newer protocols such as WPA2 and WPA3.

True or False: Captive portal authentication requires users to enter a password to access a wireless network.

• True
• False

Answer explanation

False. Captive portal authentication typically requires users to open a web browser and complete a login process, which may involve accepting terms of service or providing other information, but it does not always require entering a password. It is commonly used in public Wi-Fi hotspots and guest networks.