2.4 Wireless Standards and Technologies Flashcards

1
Q

What are the frequencies, maximum MIMO streams, maximum theoretical throughput (per stream), maximum theoretical throughput (total) of the given 802.11 standard:
802.11a

A

5GHz, N/A, 54Mbit/s, 54Mbit/s

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2
Q

What are the frequencies, maximum MIMO streams, maximum theoretical throughput (per stream), maximum theoretical throughput (total) of the given 802.11 standard:
802.11b

A

2.4GHz, N/A, 11Mbit/s, 11Mbit/s

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3
Q

What are the frequencies, maximum MIMO streams, maximum theoretical throughput (per stream), maximum theoretical throughput (total) of the given 802.11 standard:
802.11g

A

2.4GHz, N/A, 54Mbit/s, 54Mbit/s

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4
Q

What are the frequencies, maximum MIMO streams, maximum theoretical throughput (per stream), maximum theoretical throughput (total) of the given 802.11 standard:
802.11n

A

5GHz/2.4GHz, 4x MIMO, 150Mbit/s, 600Mbit/s

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5
Q

What are the frequencies, maximum MIMO streams, maximum theoretical throughput (per stream), maximum theoretical throughput (total) of the given 802.11 standard:
802.11ac

A

5GHz, 8x DL MU-MIMO, 867Mbit/s, 6.9Gbit/s

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6
Q

What are the frequencies, maximum MIMO streams, maximum theoretical throughput (per stream), maximum theoretical throughput (total) of the given 802.11 standard:
802.11ax

A

5GHz/2.4GHz, 8x DL and UL MU-MIMO, 1201Mbit/s, 9.6Gbit/s

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7
Q

What is a SSID (Service Set Identifier)?

A

The name for the broadcast network names advertised to wireless stations by access points.

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8
Q

What is a BSS (Basic Service Set)?

A

BSS wireless network types have just one access point, so clients don’t roam between APs.

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9
Q

What is an ESS (Extended Service Set)?

A

Extended Service Sets are created when the same SSID is advertised on multiple APs.

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10
Q

What is an IBSS (Independent Basic Service Set)?

A

IBSS is an ad-hoc connection between two stations, no access points or other infrastructure devices are required.

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11
Q

What encryption does Wi-fi Protected Access (WPA) use?

A

Implemented an algorithm called Temporal Key Integrity Protocol (TKIP) alongside the RC4 cipher.

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12
Q

What encryption does Wi-fi Protected Access 2 (WPA2) use?

A

Implements CCMP-AES encryption.

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13
Q

Which of the following technologies allows for global cellular communications by identifying the subscriber with a SIM card?

A

GSM

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