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CCNP_MeasureUp > Wireless > Flashcards

Wireless Flashcards

1
Q

Cisco OEAP

A

Cisco OfficeExpress AP

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2
Q

In a Cisco OEAP setup - is roaming supported?

A

No

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3
Q

The FlexConnect access points can switch client data traffic ….

A

locally and perform client authentication locally when their connection to the controller is lost

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4
Q

FlexConnect - Central Switching

A

Data traffic sent back to controller

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5
Q

FlexConnect - Local Switching

A

Data traffic sent to local port

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6
Q

Mobility Group definition

A
  • Set of controlers
  • Identified by the same mobility group name
  • Realm of seamless roaming
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7
Q

How does a Mobility Group enable smoother roaming?

A

Share context and state of client devices

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8
Q

Mobilility Group - Mobile Announce

A

When a client joins associates with a WLC a WLC sounds out a broadcast out to all members of the Mobility Group to inform them of the client

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9
Q

Mobility Group - unicast or multicast?

A

Usually unicast but can be multicast

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10
Q

Command to view basic info on Mobility Group

A

show mobility summary

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10
Q

Command to view basic info on Mobility Group

A

show mobility summary

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11
Q

CCMP stands for, and is

A

Counter Mode Cipher Block Chaining Message Authentication Code Protocol

Used in wireless WPA-2

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12
Q

What feature is enabled by default in the following scenario:
enabled automatically for CB21AG and PI21AG clients using WPA/WPA2/CCKM with LEAP, EAP-FAST, EAP-TLS, PEAP (EAP-GTC), or PEAP (EAP-MSCHAP V2)

A

CCKM - Cisco Centralized Key Management

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13
Q

Typical ROAM time with CCKM

A

Less than 150ms

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14
Q

How does CCKM work

A

fast rekeying technique that enables Cisco client devices to roam from one access poin

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15
Q

Local EAP methods

A
  • LEAP
  • EAP-FAST
  • PEAP
  • EAP-TLS
16
Q

Where is EAP-AKA used?

A

EAP for Universal Mobile Telecommunications systems Authentication and Key Arrangement

Cellular networks
Not local

17
Q

Why can EAP-MD-5 not be used for local authentication?

A

Insecure

18
Q

What SNR is required for triangulation?

A

20 or higher

19
Q

What RSSI is (cisco) recomemnded for accurate location tracking?

A

-75dBm or higher

20
Q

BLE-capable devices are

A

Bluetooth Low Energy
Indoor location racking
No triangulation

21
Q

AP Monitor Mode

A

Dedicated Sensor for IDS events and Rogue access points

22
Q

AP Sniffer Mode

A

Troubleshoot a network problem by capturing wireless frames

REview in Wireshark

23
Q

Layer 2 Intra Controller Roam Also caleld

A

Local-to-local roam

24
Q

What are the types of wireless access point patterns?

A

Omnidirectional
Directional

25
Q

What antenna produces this wireless pattern?

A

Cisco Sector Antenna

26
Q

What antennda produces this wireless pattern?

A

Stadium Patch Antenna

27
Q

What antenna produces this wireless patern?

A

Yagi

28
Q

What antenna produces this type of wireless pattern?

A

Patch

29
Q

What antenna produces this type of wireless pattern?

A

Dipole

30
Q

802.11k

A

Client optimized neighbour lists for assisted roaming
Essentially, Client asks AP for knowledge on other AP’s that it knows can meet it’s needs (e.g. same band). Client able to connect wthiout probing

31
Q

802.11r

A

Fast Transition mechanism associated with wireless security
AP and client perofrm the Pairwise Master Key in advance -> this PMK is then used with other AP’s

32
Q

802.11w

A

Protected Management Frames

33
Q

802.11v

A

allows client devices to exchange information about the network topology, including information about the RF environment, making each client network aware, facilitating overall improvement of the wireless network.

Specifically facilitiates:
*Network Assited Power Savings
*Network assited roaming

34
Q

802.11b is what frequency band?

A

2.4 GHz

35
Q

What frequency band do alot of house hold devices, such as microwaves - operate in?

A

2.4Ghz

36
Q

802.11b data rates

A

11Mbps

37
Q

802.11n data rates

A

100 Mbps

38
Q

802.11n Frequency Bands

A

2.4 Ghz and 5 Ghz

CCNP_MeasureUp (5 decks)

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