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>> Reliable CWNA-109 Exam Questions <<
If you really want to pass the real test and get the CWNP certification? At first, you should be full knowledgeable and familiar with the CWNA-109 certification. Even if you have acquired the knowledge about the CWNA-109 actual test, the worries still exist. You do not know what questions you may be faced with when attending the real test. Now, you need the CWNA-109 practice dumps which can simulate the actual test to help you. Our CWNA-109 training dumps can ensure you pass at first attempt.
NEW QUESTION # 133
What can cause excessive VSWR in RF cables used to connect a radio to an antenna?
Answer: B
Explanation:
Impedance is the measure of opposition to the flow of alternating current (AC) in a circuit. Impedance mismatch occurs when the impedance of the radio does not match the impedance of the antenna or the cable.
This causes some of the transmitted or received signal to be reflected back, resulting in a loss of power and efficiency. The voltage standing wave ratio (VSWR) is a metric that indicates the amount of impedance mismatch in a transmission line. A higher VSWR means a higher impedance mismatch and a lower signal quality. A VSWR of 1:1 is ideal, meaning there is no impedance mismatch and no reflected power. A VSWR of 2:1 means that for every 2 units of forward power, there is 1 unit of reflected power12.
The other options are not correct because they do not affect the VSWR in RF cables. A high gain yagi antenna or a high gain parabolic dish antenna can increase the signal strength and directionality, but they do not cause impedance mismatch in the cable. Radio output power above 100 mW but below 400 mW is within the acceptable range for most WLAN devices and does not cause excessive VSWR in the cable3.: 1: CWNA-109 Official Study Guide, page 77 2: VSWR 3: CWNA-109 Official Study Guide, page 81
NEW QUESTION # 134
A wireless engineer measures a high VSWR value on an antenna cable run. What does this indicate?
Answer: D
Explanation:
Voltage Standing Wave Ratio (VSWR) is a measurement used to determine how efficiently RF power is transmitted from a source, through a transmission line, to a load such as an antenna. A high VSWR value indicates a significant impedance mismatch somewhere in the RF path, which causes a portion of the signal to be reflected back toward the transmitter instead of being radiated. This reflected energy can reduce range and, in extreme cases, damage the transmitter.
An ideal VSWR value is close to 1:1, indicating minimal reflection.
NEW QUESTION # 135
What unit of measure is a relative value that expresses a change in signal strength between two points as a ratio, and can be used to describe an increase or decrease in signal power?
Answer: C
Explanation:
The decibel (dB) is a logarithmic unit that expresses the ratio between two power levels. It is a relative measurement, meaning it describes a change or difference in power rather than an absolute value. dB is commonly used to express gains and losses in an RF system, such as antenna gain, cable loss, or connector loss. In contrast, dBm and mW are absolute units of measurement, referenced to one milliwatt, and are used to express actual power levels rather than relative changes.
NEW QUESTION # 136
What security option for 802.11 networks supports SAE and requires protected management frames?
Answer: B
Explanation:
The security option for 802.11 networks that supports SAE and requires protected management frames is WPA3. WPA3 stands for Wi-Fi Protected Access version 3 and is the latest security standard for WLANs. WPA3 supports two modes: WPA3-Personal and WPA3-Enterprise. WPA3- Personal uses Simultaneous Authentication of Equals (SAE) as the key exchange protocol, which provides stronger protection against offline dictionary attacks and password guessing than WPA2-Personal. WPA3 also requires protected management frames, which are encrypted frames that prevent spoofing, replay, or denial-of-service attacks on management frames such as deauthentication or disassociation frames. WPA, WPA2, and OWE do not support SAE or require protected management frames.
NEW QUESTION # 137
You are troubleshooting a controller-based AP that is unable to locate the controller. DHCP is not use and the controller is located at 10.10.10.81/24 while the AP is on the 10.10.16.0/24 network.
What should be inspected to verify proper configuration?
Answer: A
Explanation:
What should be inspected to verify proper configuration is DNS. DNS stands for Domain Name System and is a service that resolves hostnames to IP addresses. In a controller-based AP deployment, DNS can be used to help the AP locate the controller by using a predefined hostname such as CISCO-CAPWAP-CONTROLLER or aruba-master. The AP sends a DNS query for this hostname and receives an IP address of the controller as a response. Therefore, if DNS is not configured properly or if there is no DNS entry for the controller hostname, the AP may not be able to locate the controller. NTP, BOOTP, and AP hosts file are not relevant for this scenario.
NEW QUESTION # 138
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