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Questions and Answers
What is one of the challenges associated with wireless networks mentioned in the text?
What is one of the challenges associated with wireless networks mentioned in the text?
- Implementing more complex network infrastructure
- Increasing the speed of data transmission
- Reducing the number of authorized users
- Maintaining confidentiality of data (correct)
What is a common method mentioned for ensuring that only authorized users can connect to a wireless network?
What is a common method mentioned for ensuring that only authorized users can connect to a wireless network?
- Allowing anonymous connections
- Multi-factor authentication (correct)
- Disabling encryption for easy access
- Broadcasting usernames publicly
Why is encrypting data important in wireless network communication, as stated in the text?
Why is encrypting data important in wireless network communication, as stated in the text?
- To prevent unauthorized individuals from listening to the packets (correct)
- To increase the signal strength of the network
- To reduce the need for authentication
- To speed up data transfer rates
What is the purpose of a message integrity check (MIC) in wireless network communication?
What is the purpose of a message integrity check (MIC) in wireless network communication?
What is the root challenge highlighted in the text regarding sending data over wireless networks?
What is the root challenge highlighted in the text regarding sending data over wireless networks?
Why does the text suggest encrypting all data sent over wireless networks?
Why does the text suggest encrypting all data sent over wireless networks?
Which key exchange method is built into the WPA3 standard?
Which key exchange method is built into the WPA3 standard?
What authentication method usually requires a pre-shared key for wireless networks?
What authentication method usually requires a pre-shared key for wireless networks?
What type of authentication method uses a central backend server like a RADIUS server?
What type of authentication method uses a central backend server like a RADIUS server?
What protocol is used to communicate with an authentication server for centralized authentication?
What protocol is used to communicate with an authentication server for centralized authentication?
In the context of network authentication, what does AAA stand for?
In the context of network authentication, what does AAA stand for?
Which type of network connection is RADIUS commonly used for?
Which type of network connection is RADIUS commonly used for?
What type of system does not require any authentication to connect to the network?
What type of system does not require any authentication to connect to the network?
What is the main purpose of utilizing a RADIUS server for authentication?
What is the main purpose of utilizing a RADIUS server for authentication?
What type of connectivity typically involves logging in with a username and password instead of using a pre-shared key?
What type of connectivity typically involves logging in with a username and password instead of using a pre-shared key?
Which block cipher mode does WPA2 use for data confidentiality and message integrity check?
Which block cipher mode does WPA2 use for data confidentiality and message integrity check?
When was WPA3 introduced as an enhanced version of WPA2?
When was WPA3 introduced as an enhanced version of WPA2?
What encryption method does WPA3 use for authenticating pre-shared keys, providing mutual authentication?
What encryption method does WPA3 use for authenticating pre-shared keys, providing mutual authentication?
What is the block cipher mode introduced with WPA3 that is stronger and more powerful compared to CCMP?
What is the block cipher mode introduced with WPA3 that is stronger and more powerful compared to CCMP?
What security vulnerability is associated with pre-shared keys in WPA2 networks due to the four way handshake process?
What security vulnerability is associated with pre-shared keys in WPA2 networks due to the four way handshake process?
What type of authentication method does WPA3 employ to ensure both the user and the access point are legitimate with pre-shared keys?
What type of authentication method does WPA3 employ to ensure both the user and the access point are legitimate with pre-shared keys?
What does SAE stand for in the context of WPA3 security for authenticating pre-shared keys?
What does SAE stand for in the context of WPA3 security for authenticating pre-shared keys?
What is the full name of the block cipher mode used in WPA2?
What is the full name of the block cipher mode used in WPA2?
What benefit does WPA3 provide over WPA2 in terms of sending key information across the network?
What benefit does WPA3 provide over WPA2 in terms of sending key information across the network?
What authentication method is commonly associated with Cisco devices?
What authentication method is commonly associated with Cisco devices?
Which authentication method supports single sign on?
Which authentication method supports single sign on?
In what year was Kerberos developed?
In what year was Kerberos developed?
What type of authentication method is commonly used in Windows domains?
What type of authentication method is commonly used in Windows domains?
Which authentication method involves the use of cryptographic tickets?
Which authentication method involves the use of cryptographic tickets?
What is an example of multi-factor authentication?
What is an example of multi-factor authentication?
Which factor of authentication involves something you have?
Which factor of authentication involves something you have?
What enables single sign on functionality in Kerberos?
What enables single sign on functionality in Kerberos?
What authentication method was released as an open standard in 1993?
What authentication method was released as an open standard in 1993?
What is another term for multi-factor authentication?
What is another term for multi-factor authentication?
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Study Notes
- Wireless networks face challenge of maintaining data confidentiality and ensuring only authorized individuals access data.
- Authentication required before connecting to wireless network, often involving a username and password, and possibly multi-factor authentication.
- Data sent over wireless networks must be encrypted to protect against unauthorized access.
- WPA2 and WPA3 are common types of wireless encryption, with WPA2 using CCMP block cipher mode and WPA3 using GCMP.
- WPA2 has security issue with pre-shared keys, allowing attackers to capture hash during four-way handshake and perform brute force attacks.
- WPA3 introduces mutual authentication method called SAE, removing possibility of attackers gaining access to hash and performing brute force attacks.
- Authentication servers used to manage logins and authentication for devices on network, allowing centralization and easier management.
- RADIUS and TACACS are common protocols for communicating with authentication servers, with RADIUS being widely used and supported.
- Kerberos is authentication method used for logging into Windows domains, supporting single sign-on.
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