Hands-on Networking Fundamentals
Chapter 6 Solutions
Answers to the Chapter 6 Review Questions
1.
Your office is considering the installation of an 802.11g network. However, some people in your
office have older portable telephones that operate at 902 MHz. How will these telephones affect
the wireless network you are considering?
Answer: d. The network and telephones should not interfere with one another.
2.
As you consider an 802.11g wireless network for your office, one person mentions that he has
heard wireless networking has no security. What is your response?
Answer: c. 802.11g wireless networking does include security features.
3.
You live in an area that is eight miles from town and there is no DSL or cable modem service to
you and the 40 homes near yours. Which of the following might be alternatives to bring Internet
access to your area? (Choose all that apply.)
Answer: b. 802.16 wireless access
4.
What access methods are supported by the 802.11 standards? (Choose all that apply.)
Answer: a. Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA); and d. prioritybased access
5.
You are designing a new network and want to go wireless for part of the network. Your design
specifications call for a data transmission capability of 24 Mbps or faster. Which of the following
wireless technologies are options for your design? (Choose all that apply.)
Answer: b. 802.11g; and d. 802.11a
6.
When you attach a wireless access point to your existing Ethernet network, you are using the
___________________ topology.
Answer: a. extended service set (ESS)
7.
You are configuring Wired Equivalent Privacy (WEP) for your network. Which of the following
are options you can configure for WEP? (Choose all that apply.)
Answer: c. 64- and 128-bit encryption
8.
What is the name of the radio frequency bands on which users can set up wireless networking?
Answer: b. Industrial, Scientific, and Medical frequencies
9.
When you set up an access point, the broadcast area around it is called ____________.
Answer: a. cell
10. You have set up a combined 802.11g and 802.11b network and are expecting 54 Mbps
communications. However, when you test the communications they are much lower than this.
What is the problem? (Choose all that apply.)
Answer: b. Combining 802.11g and 802.11b can significantly reduce the speed of a wireless
network much below 54 Mbps.
11. Your business has just purchased a satellite Internet connection through an ISP. Which of the
following equipment can you expect to install? (Choose all that apply.)
Answer: a. a dish; and b. digital modems for sending and receiving
12. Which of the following operates at 5 GHz? (Choose all that apply.)
Answer: c. 802.11a
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13. When you evaluate devices that operate using 802.11g you notice that some advertise use of
PBCC. What does this mean?
Answer: d. Packet Binary Convolution Code enables using 22 Mbps and 33 Mbps transmissions
by sending larger packets.
14. When you have problems with the transmission speed of an 802.11g network, which of the
following should you look for as a possible cause? (Choose all that apply.)
Answer: b. devices that are relatively far from the access point; and c. microwave ovens
15. Your new wireless network comes configured by default to use open system authentication, and
the advertising information on the boxes of the WNICs says that this is an important security
feature. What is your response?
Answer: d. Configure the network to use shared key authentication or WEP instead.
16. When you go to your library and use wireless networking, you are working in a
_____________________.
Answer: b. hotspot
17. Devices you might use with Bluetooth include which of the following? (Choose all that apply.)
Answer: a. keyboards; b. telephone headsets; c. gaming devices; and d. medical devices
18. As a network consultant, you have been asked to give a presentation on examples of situations in
which wireless LANs are used. Which of the following might be a resource for your presentation
preparation?
Answer: b. WLANA
19. Why is gain important in wireless networking?
Answer: d. It is the amplification of the signal through the antenna, which affects the distance and
clarity of communications.
20. When you visit Europe, what type of wireless networks are you likely to encounter?
Answer: a. HiperLAN
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