Total Tester Chapter 22 - Wireless Networking

Choose the two frequency bands used by 802.11 (Select two)

- 2.4 GHz - 5 GHz

Wireless network hardware that complies with IEEE 802.11g operates in the___________ frequency range.

2.4 GHz

802.11g uses the____________ radio band and transmits at a maximum speed of____________.

2.4 GHz, 54 Mb/sec

Cain wants to install a wireless access point in his house, but he is unsure of the different wireless technologies in the market. Which wireless access point operates ONLY on the 5-GHz frequency?

802.11a

A technician is replacing all of the access points in an office to increase the wireless speeds. The current location of the access points allows for wireless connectivity throughout the entire office. Which of the following 802.11 standards should be used?

802.11ac

Rhonda's Cafe wants to install a wireless network for customers to use. Which standard would enable the customers to enjoy the most bandwidth?

802.11n

What wireless standard can operate at speeds of up to 150 Mbps?

802.11n

What wireless standard is backwards-compatible with 802.11g?

802.11n

Which of the following wireless networking standards can operate at two different channel widths on the same spectrum?

802.11n

Which of the following wireless standards uses MIMO?

802.11n

You are shopping for a new wireless router. Which standard is going to provide you the fastest throughput?

802.11n

What type of network is centered around an individual?q

PAN

The benefit of MAC filtering in wireless networking is that the network:

is more secure

A user has just purchased a wireless router for their home. Which of the following should be done to best secure the router from unauthorized access? (Select two)

- Change router default logins - Set encryption on the router

When setting up a new wireless router, which of the following actions should the technician take first in order to secure the network? (Select two)

- Change the SSID - Change the default username

Under outdoor conditions, the 802.11g standard supports data throughput of up to ___________ and has a range of up to ___________

54 Mbps/ 140 meters

Which of the following Wi-Fi standards operates at the shortest distance?

802.11a

Which of these wireless standards is limited to the 5 GHz range?

802.11a

Virtually all home routers today are configured using:

A web interface

What 802.11 wireless standard has the lowest throughput?

B

What type 802.11 network has a maximum throughput of 11 Mbps?

B

A technician is installing a webcam in a nursery for a user to monitor her baby. The user wants to ensure that the webcam is not broadcasting externally. Which of the following would the technician implement on the SOHO router to prevent the broadcast?

Block the outbound port

Andrew wants to create a PAN using the wireless keyboard, mouse, and headset he just recently purchased. What wireless standard is BEST suited for this?

Bluetooth

Jim wants to be able to access his favorite website wirelessly with his new laptop, from anywhere.. Which of the following would be the BEST choice for him to install/configure?

Cellular card

A wireless network is experiencing intermittent connectivity. Which of the following would best resolve this issue?

Change broadcast channel

You are replacing your old 802.11b wireless router with a new 802.11g wireless router. You have just changed the SSID, you enabled WPA2, and finally, you set a passphrase for the level of encryption chosen. What should you do NEXT?

Change the administrator password

You are a technician working for a client and you are installing a new SOHO WiFi router on their network. Which of the following should you do FIRST to secure the router from unauthorized access?

Change the username and password from the default

Yesterday you were working on client's wireless laptop, patching the system through Windows Update. Today, the client reports that they can no longer access the internet. What is the FIRST thing you should check?

Check the switch on the laptop to ensure that the WiFi radio is on

A technician is dispatched to a user's home to secure a wireless network. The SOHO user has only one system to connect wirelessly, yet wishes to protect her Wi-Fi network from unauthorized use. Which of the following will best meet the user's requirements?

Configure the router to allow access by specific MAC addresses

Bilal is on his wireless network and his laptop receives the IP address 169.254.155.2, but cannot connect to the Internet. Which of the following should Bilal check on wireless router?

DHCP

When securing a new wireless router, which of the following should be changed first?

Default password

Joanna is setting up a SOHO wireless network and doesn't want her neighbors to be able to discover the network. How can she make this happen?

Disable SSID broadcast

A user installed a net SOHO router and new wireless NICs to increase his network's transmission speed from 802.11b to 802.11g. He didn't change the router from the manufacturer's default settings. The user lives in an apartment building and is still experiencing a slow Internet connection after the installations. Which of the following is the most secure option that a technician could implement to resolve this issue?

Enable MAC filtering

The rooms on the west side of a house do not get enough wireless signal to allow use of the wireless network. What can you do to fix this?

Install a second WAP

Lou passed his A+ exams two months ago and immediately implemented the wireless security ideas he learend while studying for the exam to his home network. He has three computers at home, all connected wirelessly and all working just fine. This week he bought a new laptop and brought it home. He connects to his SSID using the correct WPA2 passphrase, but he keeps getting an APIPA address. Which of the following should he consider checking FIRST?

MAC address filtering

A user gets a warning from his ISP about illegally downloading copyrighted movies. The user insists that he did not download any movies and calls a technician to implement stronger small office home office (SOHO) security. Which of the following will allow only known workstations to connect to the SOHO router?

MAC filtering

How can a technician limit access to a SOHO wireless network based on a computer's NIC?

MAC filtering

Kenneth has an 802.11n network. He only wants his three computers in the house to be able to access this network. Which of the following technologies would best enable him to do this?

MAC filtering

Len is nervous about outsiders accessing his home network. Which of the following could he use to control access?

MAC filtering

Which of the following WAP features prevents unauthorized computers from joining a wireless network?

MAC filtering

You are configuring a new wireless router for a SOHO network and you want to ensure that only specific client machines can connect. What should you use?

MAC filtering

A technician has upgraded an internal Wi-Fi card on a laptop and now the signal power to connect to a WAP is low. Which of the following is the most likely cause of the issue?

One of the antenna wires is unplugged

Which of the following supports IP telephony devices without requiring external power?

PoE

For any given 802.11n wireless Internet signal, which of the following is needed to establish a connection?

Proper SSID

Louis is using the Web interface to configure his SOHO home router/access point. At this exact moment, none of his own computers are on the wireless network. He goes into a screen called "active clients" only to see that a computer he doesn't recognize is on his network. What should he do?

Reassess and add better security to his wireless network

Jerry is preparing to install a new wireless printer for use in new apartment. He knows that because he lives in a crowded apartment complex, there are several wireless networks in the area. Of the following items, which will be used to determine the wireless network from which the printer will be available?

SSID

While any form of electronic communication suffers from some amount of latency, which of the following technologies is particularly notorious for this problem?

Satellite

In a SOHO wireless network, which of the following prevents unauthorized users from accessing confidential data?

Set encryption

Alex has just purchased a new 802.11n Wi-Fi router for his home. He powers it up and configures it. He then proceeds to connect his current 802.11g devices, as well as his brand new laptop. Even though the laptop has a built-in 802.11n antenna, he is still not noticing any speed increase. Which of the following is the most likely cause?

The router is broadcasting a mixed mode

You are on a service call. The customer tells you that he keeps finding new folders with names like "music" and "games" that he did not place there. After talking to the other employees to verify they did not place those files, you see they have an unencrypted wireless network. Which of the following actions is the LEAST NECESSARY response?

Use only wired networking.

What is the simplest way to prevent unauthorized users from joining a wireless network?

User wireless encryption

Of the available choices, which is the least secure form of encryption?

WEP

What is the least secure type of wireless encryption?

WEP

Which of the following describes WLAN best?

Wi-Fi, Bluetooth, infared, and cellular