2) Wireless network standards are ________ standards. A) OSI B) TCP/IP C) both A
ID: 3682736 • Letter: 2
Question
2) Wireless network standards are ________ standards.
A) OSI
B) TCP/IP
C) both A and B
9) Radio transmission is measured in terms of ________.
A) bytes per second
B) wavelength
C) frequency
D) bits per second
12) At 10 meters, a signal has a strength of 100 mW. About how strong will it be at 40 meters?
A) about 0.5 mW
B) about 5 mW
C) about 25 mW
D) about 6 mW
14) What propagation problem becomes worse as there is a large and dense object between
sender and receiver?
A) multipath interference
B) shadow zones or dead zones
C) both A and B
D) neither A nor B
20) Signals in a transmission usually ________.
A) travel at a single frequency
B) spread over a range of frequencies
C) spread over the entire frequency distribution
D) spread over the entire service band
24) To transmit data very rapidly, you would want a ________ channel.
A) narrowband
B) broadband
C) single-frequency band
D) none of the above
38) ________ have SSIDs.
A) Wireless clients
B) Wireless access points
C) both A and B
D) neither A nor B
39) To use an access point, you need to know its ________.
A) SSID
B) BSSID
C) ESSID
D) Wi-Fi ID
40) To connect to an access point, you must know its ________.
A) SSID
B) EUI-48 address
C) IP address
D) Wi-Fi ID
43) Access points in the same ESS communicate via ________.
A) wireless transmission
B) the distribution system
C) a master access point
D) routers
50) CSMA/CD+ACK is ________.
A) unreliable
B) reliable
C) semireliable
52) The 802.11 standard has two mechanisms for media access control. One of two mechanisms
is mandatory; it is ________.
A) MAC
B) CSMA/CA+ACK
C) RTS/CTS
D) CSMA/CD
53) CSMA/CA+ACK usually is ________.
A) mandatory
B) optional
C) not important
D) efficient
54) Which of the following is more efficient and faster?
A) CSMA/CA+ACK
B) RTS/CTS
C) Both are about equally efficient and fast.
55) Which of the following is the newest Wi-Fi standard?
A) 802.11ac
B) 802.11g
C) 802.11n
D) 802.11b
56) Today, Wi-Fi sales are dominated by ________.
A) 802.11a
B) 802.11g
C) 802.11n
D) 802.11ac
59) In 802.11g, channel bandwidth usually is ________.
A) 20 GHz
B) 40 GHz
C) 20 MHz
D) 40 MHz
61) MIMO ________.
A) bonds two or more channels for higher speed
B) is used in all forms of 802.11
C) uses a single spatial stream but multiple signals
D) transmits multiple signals in the same channel
62) MIMO ________.
A) increases throughput
B) lowers propagation distance
C) both A and B
D) neither A nor B
Explanation / Answer
2) ans-a
9) ans-c
20) ans-b
24) ans-b
39) ans-a
40) ans-a
43) ans-a
53) ans-a
54) ans-a
55) ans-a
56) ans-d
59) ans-c
62) ans-c
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