CWNA Sample Test Questions
CWNA Sample MCQs with Answers and Explanations:
1. Which statement is MOST TRUE regarding 802.11a and 802.11g standards?
a) They both operate in the 2.4 GHz frequency band. b) They both offer similar data rates and range. c) 802.11a uses 5 GHz band and offers higher data rates than 802.11g. d) 802.11g offers better compatibility with older devices than 802.11a.
Explanation: (c) is correct. 802.11a operates in the 5 GHz band with higher data rates compared to 802.11g which uses the 2.4 GHz band. Although less susceptible to interference, 802.11a had limited device compatibility initially, while 802.11g offered better backward compatibility with older devices using the same band.
2. What is the primary function of a WLAN access point (AP)?
a) To connect directly to the internet b) To provide wireless network access to clients c) To route data between wired and wireless networks d) To manage security authentication for wireless connections
Explanation: (b) is correct. The primary function of an AP is to act as a central hub, providing wireless connectivity to devices within its range and facilitating communication between wireless clients and the wired network.
3. What type of encryption offers the STRONGEST security for WLAN connections?
a) WEP (Wired Equivalent Privacy) b) WPA (Wi-Fi Protected Access) c) WPA2 (Wi-Fi Protected Access II) d) WPA3 (Wi-Fi Protected Access 3)
Explanation: (d) is correct. WPA3, the latest Wi-Fi security standard, offers improved security features compared to its predecessors, including stronger encryption algorithms, enhanced authentication protocols, and protection against brute-force attacks.
4. What is the purpose of performing a site survey when deploying a WLAN network?
a) To assign IP addresses to wireless clients b) To identify optimal placement of access points c) To configure security settings for the network d) To troubleshoot connectivity issues on client devices
Explanation: (b) is correct. A site survey helps assess factors like signal strength, coverage area, interference, and channel overlap to determine the optimal placement of access points for efficient network performance.
5. What type of antenna typically offers the WIDEST coverage area for a WLAN access point?
a) Omni-directional antenna b) Directional antenna c) Patch antenna d) Yagi antenna
Explanation: (a) is correct. Omni-directional antennas radiate signals in all directions, providing wider coverage compared to directional antennas that focus signals in a specific direction. However, omni-directional antennas might have lower signal strength at a distance.
6. What is the role of DHCP (Dynamic Host Configuration Protocol) in a WLAN network?
a) To secure wireless connections from unauthorized access b) To assign IP addresses and other network configuration settings to clients c) To route data packets between different network segments d) To manage and monitor wireless access point functionality
Explanation: (b) is correct. DHCP automatically assigns IP addresses, subnet masks, and other configuration details to devices connecting to the network, simplifying network management and avoiding manual configuration for each device.
7. Which factor MOST significantly affects the data transfer rate in a WLAN network?
a) The type of encryption used b) The distance between the client and access point c) The number of connected devices d) The bandwidth of the internet connection
Explanation: (b) is correct. The distance between the client and access point significantly impacts the signal strength and, consequently, the data transfer rate. As the distance increases, the signal weakens, leading to slower data speeds.
8. What is the main purpose of using VLANs (Virtual Local Area Networks) in a WLAN environment?
a) To increase the overall network coverage area b) To improve signal strength for individual devices c) To segment the network and improve security and efficiency d) To prioritize traffic for specific applications
Explanation: (c) is correct. VLANs logically segment a single physical network into multiple virtual networks, separating traffic based on department, device type, or other criteria. This enhances security, traffic management, and performance by limiting broadcast domains and potential security risks.