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42 Cards in this Set
- Front
- Back
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What type of network uses low-power transmitters to create a network with a very short range? (Usually 20 to 30 feet) |
Wireless personal area network (WPAN) |
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Wireless personal area networks are based on what IEEE standard? |
IEEE 802.15 standard |
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What technologies are included and wireless personal area networks? |
Bluetooth and zigbee |
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What type of wireless network is a service that connects multiple devices using the IEEE 802.11 standard over a medium sized range usually up to 300 feet? |
Wireless local area network (WLAN) |
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What type of wireless network services a large geographical area such as all or a portion of a city? |
Wireless Metropolitan area network (WMAN) |
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What is a example of a wireless Metropolitan area network that is based on the IEEE 802.16 standard? |
WiMAX |
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What is a wireless data service for mobile phones that is offered over a very large geographical area? |
Wireless wide-area network (WWAN) |
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To fully leverage wireless communication how should data travel? |
Both directions |
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Bidirectional communication can commonly be referred to in what two phrases? |
1. Take a turn2. Send it other times |
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The 802.11 2012 standard does not permit what type of operation? |
802.11 standard does not permit full duplex |
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What is the term given to having access to a channel at any given time? |
Airtime |
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Before a wireless device can participate it must advertise its capabilities and then be granted permissions to join. The 802.11 standard calls this a _______________. |
Basic service set (BSS) |
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At the heart of every BSS is a wireless access point that operates and what mode? |
Infrastructure mode |
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What access point mode offers the services that are necessary to form the infrastructure of a wireless network? |
Infrastructure mode |
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What is the area where the APs signal is usable called? |
It is called the basic service area (BSA) or cell |
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What is the name of the identifier for the APs own radio MAC address? |
BSS identifier (BSSID) |
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And AP advertises a wireless network using a text string containing a logical name that is called what? |
Service set identifier (SSID) |
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What is a human readable name tag that identifies the wireless service? |
Service set identifier (SSID) |
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Membership with the BSS is called what? |
Association |
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Once associated a device becomes a client or also known as what? |
An 802.11 station (STA) |
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What 802.11 amendment provides an exception that permits to clients to communicate directly without passing through an AP? |
802.11z |
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The 802 the 11 standard refers to the upstream wired ethernet for the wireless BSS as what? |
Distribution system (DS) |
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If multiple VLANs are mapped into multiple SSID's the AP must be connected to the switch by what kind of link? |
Trunk link |
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What type of encapsulation does an AP use to map the VLAN numbers to the appropriate SSIDs? |
802.1Q |
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When an AP uses multiple SSIDs, it is trunking VLANs over the air to wireless clients. With Cisco APs this is usually accomplished how? |
By incrementing the last digit of the radios MAC address |
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When APs or place a different geographic locations they can be interconnected by a switched infrastructure. 802.11 standard calls this what? |
An extended service set (ESS) |
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Passing from one AP to another is called what? |
Roaming |
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What 802.11 standard allows two or more wireless clients to communicate directly with each other with no other means of connectivity? |
An ad hoc wireless network also known as an independent basic service set (IBSS) |
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What type of service sets do not scale well beyond 8 to 10 devices? |
Ad hoc wireless networks or independent basic service sets (IBSS) |
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To extend wireless coverage what mode can access points be configured to take the signal it receives and repeat or retransmit it? |
Repeater mode |
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If a repeater is using a single radio there is a possibility of what? |
Halving the effective throughput |
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When using a repeater, to keep the original signal and repeated signal isolated, what must you have? |
Two radios |
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What can you use to connect the devices wired network adapter to a wireless network? |
You can use a workgroup bridge (WGB) |
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What becomes a wireless client of a BSS and acts as an external wireless network adapter for a device that has none? |
Workgroup bridge (WGB) |
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Where two types of workgroup bridges? |
1. Universal workgroup bridge (uWGB) 2. Workgroup bridge (WGB) |
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This type of bridge can bridge a single wired device to a wireless network. |
Universal workgroup bridge (uWGB) |
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This bridge is a Cisco proprietary implementation that allows multiple wireless devices to be bridged to a wireless network |
Worker bridge (WGB) |
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What type of bridges are commonly used for connectivity between buildings or between cities? |
Outdoor bridge link |
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What type of bridge link allows a central site to be bridged to several other sites? |
A point to multipoint bridge link |
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In a point to multipoint bridge link the central site bridge is connected to a ____________ antenna so that signal can reach the other sites simultaneously bridge at each of the other sites can be connected to a _____________ antenna aimed at the central site. |
In a point to multipoint bridge link the central site is connected to a omnidirectional antenna so that signal can reach other sites simultaneously. The bridge at each of the other sites can be connected to a directional antenna aimed at the central site |
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Mesh APs can leverage dual radios typically maintaining a BSS on the ____ channel while using the _____ channels as a backhaul network among the APs. |
2.4-GHz 5-GHz |
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What does a mesh network run to work out the best path for backhaul traffic? |
Mesh network runs its own dynamic routing protocol |
