In which of the following frequency ranges do DSSS (direct-sequence spread spectrum) devices operate?
A. 2.5 to 5.0 GHz
B. 3.4 to 4.5 GHz
C. 3.0 to 3.5 GHz
D. 2.4 to 2.5 GHz
In which of the following Fresnel zones do the strongest RF signals lie?
A. Second and second-to-last Fresnel zones
B. First (innermost) Fresnel zone
C. Middle Fresnel zone
D. Last (outermost) Fresnel zone
Which of the following factors determines whether a site is required?
A. Number of servers
B. Geographic location
C. Number of antennas
D. Number of access points
At what impedance are wireless LAN cables and devices rated?
A. 75 ohms
B. 60 ohms
C. 50 ohms
D. 10 ohms
Which of the following kinds of antennas do point-to-point links typically use?
A. Highly directional and long range omnidirectional
B. Semi-directional and highly directional
C. Omnidirectional and highly directional
D. Long range omnidirectional and semi-directional
At which of the following layers of the OSI model does WLAN function?
A. Layer 3 and Layer 4
B. Layer 2 and Layer 3
C. Layer 1 and Layer 2
D. Layer 4 and Layer 5
What kind of antenna is Yagi-Uda?
A. Highly directional
B. Semi-directional
C. Unidirectional
D. Omnidirectional
What is the range of voltage specified by the PoE (Power over Ethernet) standard?
A. 32-57 VDC
B. 12-32 VDC
C. 15-38 VDC
D. 30-47 VDC
Which of the following is the amplitude of an RF signal?
A. Shift
B. Height
C. Length
D. Width
Which of the following security options is used to identify and connect to a wireless network?
A. Wi-Fi Protected Access
B. Wired Equivalent Privacy (WEP)
C. 802.1X authentication
D. Service Set Identifiers (SSID)
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