CCNA 3: Chapter 4-Wireless Networking

What two modes can the APs be?

-Autonomous (standalone) -Controller Based (Wireless controller)

If three 802.11b access points need to be deployed in close proximity, which three frequency channels should be used? (Choose three.)

1, 6, 11

Which two roles are typically performed by a wireless router that is used in a home or small business? (Choose two.)

1. Access Point 2. Ethernet Switch

Max speed of 802.11ac

1.3 Gb/s

What is the speed of satellite signal?

10 Mb/s

What 3 power ranges does Bluetooth supports?

100m 10m 10cm

Max speed of 802.11b

11 Mb/s

Max Speed of 802.11

2 Mb/s

Frequency of 802.11

2.4 GHz

Frequency of 802.11b

2.4 GHz

Frequency of 802.11g

2.4 GHz

Frequency of 802.11n

2.4 GHz and 5 GHz

Frequency of 802.11ad

2.4 GHz, 5 GHz, and 60 GHz

Frequency of 802.11a

5 GHz

Frequency of 802.11ac

5 GHz

Max speed of 802.11a

54 Mb/s

Max speed of 802.11g

54 Mb/s

Max speed of 802.11n

600 Mb/s

Max speed of 802.11aad

7 Gb/s

Which three Wi-Fi standards operate in the 2.4GHz range of frequencies? (Choose three.)

802,11b,n,g

Which Wi-Fi standards fits in the 5 GHz (SHF) band?

802.11 a 802.11 n 802.11 ac 802.11 ad

Which Wi-Fi standards fits in the 60 GHz?

802.11 ad

Which Wi-Fi standards fits in the 2.4 GHz (UHF) band?

802.11 b 802.11 g 802.11 n 802.11 ad

Which statement defines the control frame operation between two stations?

After receiving a data frame, the receiving station will send an ACK frame to the sending station if no errors are found

What is an advantage of SSID cloaking?​

Clients will have to manually identify the SSID to connect to the network.

A administrator wishes to extend the range of the existing IEEE 802.11n network without changing the AP. What can the administrator do to accomplish this?

Deploy a Wi-Fi Range Extender

Which type of wireless topology is created when two or more Basic Service Sets are interconnected by Ethernet?

ESS (Extended Service Set)

What speed type are Wi-Fi?

Half-duplex

What structure does the 802.11 Frame consists of?

Header Payload FCS

What is the standard for Bluetooth?

IEEE 802.15

What standard is Wi-MAX?

IEEE 802.16

What is a disadvantage of BSA?

If one of the clients move away from that BSA 1, then it loses communication with other clients and the other network.

What company regulates the RF?

International Telecommunication Union Radiocommunication Sector (ITU-R)

What is the purpose of the Distributed Coordination Function in an IEEE 802.11 WLAN environment?

It allows a client to detect whether or not a channel is clear prior to transmission

What is a Basic Service Set?

It is a set that consists of a single AP that is connecting all nearby wireless clients to the infrastructure.

Which feature of 802.11n wireless access points allows them to transmit data at faster speeds than previous versions of 802.11 Wi-Fi standards did?

MIMO

An employee connects wirelessly to the company network using a cell phone. The employee then configures the cell phone to act as a wireless access point that will allow new employees to connect to the company network. Which type of security threat best describes this situation?

Rogue AP

What is the SSID of the connected network and which message is displayed in the browser window?

SSID: Home-Net

What is a difference between Cisco APs that operate in a home environment and Cisco APs that operate in a corporate environment?

Some corporate AP models can operate in either autonomous mode or controller-based mode.

A company has recently implemented an 802.11n wireless network. Some users are complaining that the wireless network is too slow. Which solution is the best method to enhance the performance of the wireless network?

Split the traffic between the 2.4 GHz and 5 GHz frequency bands.

What is the solution of disconnectivity between BSAs?

Use Extended Service Area.

Which security mode is the least secure choice when a home wireless router is configured?

WEP

Which organization certifies vendors for adherence to the 802.11 standards to improve interoperability of 802.11 products?

Wi-Fi Alliance

During which stage of establishing connectivity between a WLAN client and an AP does the client learn the MAC address of the AP?

association

Which type of management frame may regularly be broadcast by an AP?

beacon

A student uses a laptop to upload an assignment to a file server. Which wireless frame type did the laptop send to locate and associate with the campus access point?

management frame

What type of wireless antenna is best suited for providing coverage in large open spaces, such as hallways or large conference rooms?

omnidirectional

For which discovery mode will an AP generate the most traffic on a WLAN?

passive mode

Ad hoc wireless topologies sometimes can use a feature called ________ to enable a smartphone to create a personal hotspot.

tethering