Which Wi Fi frequency band offers 24 unlicensed communications channels in the United States?
Answer: The frequency signal that offers 24 unlicensed channels is the 5- GHz band. Question 16: why do wireless networks experience such a great reduction in actual throughput compared with their respective theoretical throughputs?
Which IoT wireless standard is used to sync data from a smartwatch bike computer and smart phone to a single user account?
Which IoT wireless standard is used to sync data from a smartwatch, bike, computer and smart phone to a single user account? 802.11ac provides an advantage over 802.11 n by incorporating increased channel bonding capabilities.
Why do wireless networks experience such a great reduction?
Why do wireless networks experience such a great reduction in actual throughput compared with their respective theoretical throughputs? Wireless networks experience a high number of collisions and require greater overhead on each transmission. You’re setting up a home network for your neighbor, who is a music teacher.
Why do wireless networks experience a greater reduction in throughput compared with wired networks?
Why do wireless networks experience a greater reduction in throughput compared with wired networks ? Wireless networks operate at half duplex while wired networks can operate in full duplex which causes throughput to be lower in wireless connections then what is advertised for them.
What kind of antenna is used in a point to point link?
Directional antennas are used for Point-to-Point or sometimes for Multi -Point systems, depending on the setup. If you are trying to go from one location (say, for instance, your router), to another location, this is the type of antenna we recommend. Directional antennas include Backfires, Yagi, and Dish type antennas.
Which type of signaling is used for Wi fi?
WiFi works off of the same principal as other wireless devices – it uses radio frequencies to send signals between devices. The radio frequencies are completely different say from walky talkies, car radios, cell phones, and weather radios.
Which categories of twisted pair cable can support Gigabit Ethernet?
The type of twisted pair cable that supports Gigabit Ethernet is a Cat-5e cable, where all four pairs of twisted wires in the cable are used to achieve the high data rates. Cat-5e or higher cable categories are recommended for network video systems.
What is the lowest layer of the OSI model at which wired and wireless?
Wired and wireless transmission shares the same protocol in the network layer of OSI model.
What special signal is issued periodically from an AP?
It distorts the signal as it travels into and through a different transmission medium. 9. What special signal is issued periodically from an AP and contains the network transmission rate and service set identifier (SSID), as well as other information needed for a computer to associate with the AP ?
Which Carrier Sense technology is used on wireless networks to reduce collisions?
Carrier – sense multiple access with collision avoidance (CSMA/CA) in computer networking , is a network multiple access method in which carrier sensing is used , but nodes attempt to avoid collisions by beginning transmission only after the channel is sensed to be “idle”.
What layer of the OSI model do the 802.11 standards vary?
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|Layer 3||What is the lowest layer of the OSI model at which wired and wireless transmissions share the same protocols?|
|Physical layer||At what layer of the OSI model do the 802.11 standards vary ?|
| 802.11 a||Which 802.11 standard was the first to utilize the 5 GHz band?|
How does the 802.11 data frame indicate how a large packet should be fragmented?
How does the 802.11 data frame indicate how a large packet should be fragmented ? the duration field determines how long the station can transmit a packet , which then determines how it is divided.
What technology does Bluetooth use to take advantage of the 79 channels allocated to the Bluetooth band?
Bluetooth utilizes frequency-hopping spread spectrum technology to avoid interference problems. The ISM 2.4 GHz band is 2400 to 2483.5 MHz, and Bluetooth uses 79 radio frequency channels in this band , starting at 2402 MHz and continuing every 1 MHz.
Which 802.11 standard functions are in both the 2.4 GHz and 5 GHz bands?
802.11 n – The 802.11 n specification was released in 2009. This specification uses both the 2.4GHz and 5GHz bands to broadcast signals, which allows backwards compatibility with the 802.11 b/ g and 802.11 a standards . The 802.11 n specification supports a signaling data rate of up to 300Mbps.
Which transmission characteristic is never fully achieved?
A transmission characteristic that could not be achieved completely is bandwidth.