Introduction To Wireless Network

What is the primary purpose of Wired Equivalent Privacy (WEP)?

• To provide end-to-end encryption for internet communication

• To ensure wireless networks are as secure as wired networks

• To offer a public key infrastructure for wireless communication

• To manage and control access to wireless networks

Answer explanation

WEP was designed to provide a level of security and privacy comparable to that of a traditional wired network. It aims to protect data transmitted over wireless networks from eavesdropping and unauthorized access.

Why is WEP considered to be inadequate for modern wireless network security?

• It lacks support for modern devices

• It is incompatible with IPv4 addresses

• It uses weak authentication methods

• It has several known vulnerabilities that can be easily exploited

Answer explanation

WEP has multiple well-documented vulnerabilities that can be exploited by attackers with relative ease, such as weak encryption due to static keys and short IVs, making it inadequate for securing modern wireless networks.

What is one of the key benefits of WPA3 over WPA2?

• It is faster

• It uses older encryption methods

• It provides stronger security

• It is cheaper

Answer explanation

WPA3 offers stronger security compared to WPA2 by using advanced encryption and authentication methods.

WPA3 introduces Enhanced Open, which provides encryption without requiring user credentials. What encryption mechanism does it utilize?

• Public Key Infrastructure (PKI)

• Opportunistic Wireless Encryption (OWE)

• Pre-Shared Key (PSK)

• Temporal Key Integrity Protocol (TKIP)

Answer explanation

Enhanced Open utilizes Opportunistic Wireless Encryption (OWE) to provide unauthenticated encryption, enhancing privacy on open Wi-Fi networks without the need for user credentials.

Which protocol does WPA3 use to provide strong encryption and security?

• TKIP

• WEP

• GCMP

• HTTP

Answer explanation

WPA3 uses GCMP (Galois/Counter Mode Protocol) to provide strong encryption and security.

In the context of security, what is a significant challenge when implementing WPA3 in an IBSS network?

• Lack of support for strong encryption

• Inability to perform mutual authentication

• Difficulty in managing pre-shared keys

• Compatibility with older 802.11 standards

Answer explanation

Implementing WPA3 in an IBSS network can be challenging due to the difficulty in managing pre-shared keys across multiple devices in a peer-to-peer environment without a central management point.

What is a key advantage of IBSS networks compared to infrastructure-based networks?

• Lower latency

• Higher scalability

• Greater range of communication

• Reduced power consumption

Answer explanation

IBSS networks are more scalable compared to infrastructure-based networks because they do not rely on a central access point, allowing for easier expansion and addition of devices.

Which EAP method is commonly used for authenticating wireless clients in enterprise networks?

• EAP-TLS

• EAP-MD5

• EAP-PSK

• EAP-FAST

Answer explanation

EAP-TLS (Extensible Authentication Protocol-Transport Layer Security) is commonly used for authenticating wireless clients in enterprise networks due to its strong security features.

What role does the supplicant play in the 802.1X/EAP authentication process? (choose two)

• It is the device requesting access to the network

• It is the authentication server that verifies the credentials

• It is the intermediary device that forwards authentication requests

• It is the network administrator who configures access policies

Answer explanation

The supplicant is the device (e.g., laptop, smartphone) requesting access to the network and forwards authentication requests to the authentication server.

Which entity is responsible for managing the configuration and firmware updates of access points in a CAPWAP architecture?

• Wireless client

• Wireless router

• Wireless LAN controller

• Wireless bridge

Answer explanation

In a CAPWAP architecture, the wireless LAN controller is responsible for managing the configuration and firmware updates of access points.