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CCNA 3 – Chapter 4 – Exam Answer 2016 100%

Monday, March 14, 2016

CCNA 3 – Chapter 4 – Wireless LANs Exam Answer 2016 100%

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

  • probe request
  • probe response
  • beacon
  • authentication

2.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?

  • WPS
  • MITM
  • SPS
  • MIMO

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

  • access point
  • Ethernet switch
  • RADIUS authentication server
  • repeater
  • WLAN controller

4.Fill in the blank. Do not use abbreviations.
Ad hoc wireless topologies sometimes can use a feature calledtethering to enable a smartphone to create a personal hotspot.

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

  • IEEE
  • Wi-Fi Alliance
  • FCC
  • ITU-R

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

  • directional
  • dish
  • omnidirectional
  • Yagi

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

  • Controller-based APs are used in the corporate environment, and they are server-dependent devices that require an initial configuration to operate.
  • Some corporate AP models can operate in either autonomous mode or controller-based mode.
  • Autonomous APs are used only in the home environment, and they incorporate the functions of a router, switch, and AP into one device.
  • Cisco corporate APs do not support PoE.

8.Place the following actions in the order in which they occur in a shared key authentication process. (Not all options are used.)

CCNA-3-Chapter-4-Exam-Answer
Place the following actions in the order in which they occur in a shared key authentication process. (Not all options are used.)

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

  • BSS
  • ESS
  • ad hoc WLAN
  • IBISS
  • WiFi Direct

10.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?

  • control frame
  • management frame
  • beacon frame
  • data frame

11.A WLAN user wants to allocate an optimal amount of bandwidth to a specific online game. What is a Linksys Smart Wi-Fi tool that will allow the user to do this?

  • Speed Test
  • Bandwidth Prioritization
  • Widgets
  • Media Prioritization 

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

  • probing
  • encryption
  • authentication
  • discovery
  • association

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

  • open mode
  • active mode
  • passive mode
  • mixed mode

14.What is an advantage of SSID cloaking?

  • Clients will have to manually identify the SSID to connect to the network.
  • It is the best way to secure a wireless network.
  • It provides free Internet access in public locations where knowing the SSID is of no concern.
  • SSIDs are very difficult to discover because APs do not broadcast them.

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

  • 1
  • 3
  • 5
  • 6
  • 8
  • 11

16.Match the type of attack to its description. (Not all options are used.)

CCNA-3-Chapter-4-Exam-Answer
CCNA 3 – Chapter 4 – Wireless LANs Exam Answer 2016 100%

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

  • 802.11b
  • 802.11n
  • 802.11ac
  • 802.11a
  • 802.11g

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

  • WPA2
  • WPA2-Personal
  • WPA
  • WEP

19.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?

  • Split the wireless traffic between the 802.11n 2.4 GHz band and the 5 GHz band.
  • Change to WPA2 authentication.
  • Upgrade the firmware on the AP.
  • Deploy a Wi-Fi Range Extender.

20.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.
  • Upgrade the firmware on the wireless access point.
  • Replace the wireless NICs on the computers that are experiencing slow connections.
  • Disable DHCP on the access point and assign static addresses to the wireless clients.

21.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?

  • denial of service
  • spoofing
  • cracking
  • rogue access point

22.Open the PT Activity. Perform the tasks in the activity instructions and then answer the question.
What is the SSID of the connected network and which message is displayed in the browser window?

  • SSID: Home-Net
    Message:Congratulations! You were able to connect it!
  • SSID: Home-Network
    Message: Good job!
  • SSID: Home-Network
    Message: Well done!
  • SSID: Home-Net
    Message:Congratulations! You did it!

23.Which statement defines the control frame operation between two stations?

  • A station responds to an RTS frame with an ACK frame, thus providing permission for the requesting station to send a data frame.
  • After receiving a data frame, the receiving station will send an ACK frame to the sending station if no errors are found.
  • A station sends an RTS frame as the first step in a three-way handshake that is required before sending data frames.
  • If the sending station does not receive an ACK frame within a predetermined period of time, the sending station will drop the connection.

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

  • It is used in a full-duplex environment to detect collisions.
  • It allows the client to change transmission channels.
  • It is used to send data over a half-duplex connection.
  • It allows a client to detect whether or not a channel is clear prior to transmission.

25.Fill in the blank. Use the acronym.
Which encryption protocol is used by the WPA2 shared key authentication technique? AES

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