Chapter 12
Review Questions
1. The ____ has been the standard network management protocol for both wired as
well as wireless networks.
a. Simple Network Management Protocol (SNMP)
b. 2.5G
c. Single Line Internet Protocol (SLIPL)
d. Wired Equivalent Management Standard (WEMS)
2. Each of the following can be used for wireless network management except
a. Simple Network Management Protocol (SNMP)
b. WLAN management system
c. Wireless intrusion detection system (WIDS)
d. Wired management control system (WMCS)
3. ____ allows assigning permissions to a position instead of an individual.
a. Role Based Access Control (RBAC)
b. User Permission Settings (UPS)
c. Channel Assignment Permission Control (CAPC)
d. Management Assignment Protocol (MAP)
4. Each of the following is a type of traffic filtering except
a. data filtering
b. address filtering
c. device filtering
d. protocol filtering
5. Each of the following is a standard for wireless data encryption except
a. WEP
b. MAC
c. WPA
d. WPA2
6. Based on the IEEE 802.11i security protocol, WPA Enterprise and WPA2
Enterprise models utilize IEEE 802.1x port-based authentication. True or false?
7. A network segment is a superset of a larger network. True or false?
8. A virtual local area network (VLAN) is a physical grouping of network devices
within a larger network. True or false?
9. The original 802.11 standard did not specify how communications were to take
place between access points to support users roaming from one area of AP
coverage to another. True or false?
10. Monitoring tools for wired networks do not provide the full array of features
necessary for monitoring WLANs. True or false?
11. _____ is the controlling of changes made to the WLAN after installation.
Configuration management
12. A(n) _____ outlines the requested alteration in such a way that it can be determine
what type of review is needed prior to accepting or rejecting the proposed
changes. change request form
13. A(n) _____provides the standard for the operation of network against which any
changes must be compared. WLAN baseline.
14. A(n) _____ is a listing of all installed wireless components, configuration
settings, and diagrams that document the current state of the wireless LAN.
configuration management database
15. The current 802.16 standard, known as _____, provides up to 50 kilometers (31
miles) of linear service area range and is not line-of-sight. Fixed WiMAX
16. Explain how the media access control (MAC) layer of WiMax is different from
wireless or wired networks.
The media access control (MAC) layer of WiMAX is different than that used in
IEEE 802.11a/b/g (CSMA/CA) or IEEE 802.2 (CSMA/CD). Instead, WiMAX uses a
scheduling system and the device only has to compete once in its initial entry into
the network. Once the device has been accepted it is allocated a time slot. Although
this time slot can enlarge and shrink, it remains assigned to that device and other
devices must take their turn. This type of scheduling algorithm is more stable under
heavy loads and is more efficient with bandwidth. The scheduling algorithm also
allows the base station to control Quality of Service (QoS) by balancing the
assignments among the needs of the subscriber stations
17. What is the last mile connectioin?
The last mile connection refers to the connection that begins at a fast Internet
service provider, goes through the local neighborhood, and ends at the home or
office. Whereas the connections that make up the nation’s data transmission
infrastructure are very fast and well established, the last mile connection that links
these high-speed transmission lines to the home or office are much slower and not
universally available. These slow last mile connections are bottlenecks for users.
18. How is Mobile WiMAX different from Fixed WiMAX?
Mobile WiMAX adds mobility components to the standard, allowing users to freely
roam both indoors and outdoors for kilometers while remaining connected. Fixed
WiMAX provides up to 50 kilometers (31 miles) of linear service area range and is
not line-of-sight. WiMAX also provides shared data rates up to 70 Mbps.
19. What are the advantages of Third Generation (3G) cellular telephony networks?
Today the three leading wireless carriers in the U.S. are all in the process of rolling
out Third Generation (3G) networks. 2.5G was suitable for wireless e-mail and some
customized products that. With throughput rates for 3G averaging between
400Kbps to 700Kbps, this means for the first time the cellular telephone network
can be used for wireless data communications. A laptop computer with a PC card
and a virtual private network (VPN) client will allow mobile workers to access
remote networks wherever there is cellular coverage.
20. Explain how WiMax could replace 3G and WLANs for wide area network data
transmissions.
Mobile WiMAX in the long run may replace IEEE 802.11and 3G cellular data
service for wireless area coverage in the wide area. Because IEEE 802.20 supports
both fixed as well as mobile clients, this single technology has the potential to
ultimately replace 3G cellular data service as well as WLAN. These technologies
would then be found in more specialized applications. For example, IEEE 802.11
will be used indoors while 3G will only be used in rural areas where no other
coverage exists.