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Network+ > Section 11: Wireless Networking > Flashcards

Section 11: Wireless Networking Flashcards

1
Q

What is a Wireless Local Area Network (WLAN)?

A

A wireless network that links two or more devices using wireless communication to form a LAN within a limited area.

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2
Q

What is Ad-Hoc?

A

Wireless devices communicate directly with each other without the need for a centralized access point

Peer-to-Peer Connection

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3
Q

What is a Wireless Access Point (WAP)?

A

Expands wired LAN into the wireless domain

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4
Q

What are the 2 types of Wi-Fi?

A

2.4 Ghz & 5.0 Ghz

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5
Q

What is a Basic Service Set (BSS)?

A

Basically a network topology that allows all wireless devices to communicate with each other through a common medium, such as an AP.

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6
Q

What is an Extended Service Set (ESS)?

A

A wireless network, created by multiple APs, which appears to users as a single, seamless network.

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7
Q

What is a Site Survey?

A

A wireless survey to determine coverage areas

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8
Q

What are Omnidirectional Antennas?

A

Radiates power equally in all directions

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9
Q

What is a Unidirectional Antenna?

A

Focuses power in one direction for covering greater distances

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10
Q

What channels will avoid overlapping frequencies in the 2.4 Ghz band?

A

1, 6, 11

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11
Q

What is Channel Bonding?

A

Allows you to create a wider channel by merging neighboring channels into one

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12
Q

What is the Frequency and the Bandwidth of the 802.11a standard?

A

5 Ghz, 54 Mbps

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13
Q

What is the Frequency and the Bandwidth of the 802.11b standard?

A

2.4 Ghz, 11 Mbps

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14
Q

What is the Frequency and the Bandwidth of the 802.11g standard?

A

2.4 Ghz, 54 Mbps

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15
Q

What is the Frequency and the Bandwidth of the 802.11n standard?

(Wi-Fi 4)

A

2.4 & 5 Ghz, 150 Mbps/600 Mbps (MIMO)

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16
Q

What is the Frequency and the Bandwidth of the 802.11ac standard?

(Wi-Fi 5)

A

5 Ghz, 3 Gbps (MU-MIMO)

17
Q

What is the Frequency and the Bandwidth of the 802.11ax standard?

(Wi-Fi 6)

A

2.4, 5, and 6 Ghz, 9.6 Gbps (MU-MIMO)

18
Q

What is a Pre-Shared Key?

A

A shared secret which was previously shared between two parties using some secure secure channel before it needs to be used

Both AP and client uses same encryption key

19
Q

What is Multiple Input/Multiple Output (MIMO)?

A

Uses multiple antennas to send and receive data than it could with a single antenna

20
Q

What is Multiple User - Multiple Input/Multiple Output (MU-MIMO)?

A

Allows multiple users to access the wireless network and access point at the same time

21
Q

What is Wi-Fi Protected Access (WPA)?

A

A security standard for computing devices with wireless internet connections. Replaced WEP and follows the TKIP

Look for answer with TKIP and RC4 on exam

22
Q

What is the Temporal Key Integrity Protocol (TKIP)?

A

A security protocol used in the IEEE 802.11 wireless networking standard

23
Q

What is Wi-Fi Protected Access 2 (WPA2)?

A

Created as part of the IEEE 802.11i standard and requires stronger encryption and integrity checking through CCMP (Counter Mode w/ Cipher Block Chaining Message Authentication Code Protocol)

Look for answer with CCMP and AES on exam

24
Q

What is Advanced Encryption Standard (AES)?

A

Uses a symmetric-key algorithm, meaning the same key is used for both encrypting and decrypting the data

25
Q

What is the Enterprise Mode WPA?

A

Users can be required to authenticate before exchanging keys. Keys between client and AP are temporary

26
Q

What is the Enterprise Mode WPA2?

A

Users are required to use a centralized authentication

27
Q

What is the Extensible Authentication Protocol (EAP)?

A

Authentication performed using 802.1x

28
Q

What is MAC Address Filtering?

A

Configures an AP with a listing of permitted MAC addresses

29
Q

What is a Captive Portal?

A

A web page that appears before the user is able to access the network resources

30
Q

What is Geofencing?

A

GPS or RFID defines real-world boundaries

31
Q

What is a Rogue Access Point?

A

Malicious users set up an AP to lure legitimate users to connect to the AP

Network+ (22 decks)

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