Name ________________________________________________________ Date __________________
Chapter 6: Networks
After completion of this chapter, students should be able to:










Explain the principles of networking.
Describe types of networks.
Describe basic networking concepts and technologies.
Describe the physical components of a network.
Describe network topologies
Identify Ethernet standards.
Explain OSI and TCP/IP data models.
Describe how to configure a NIC and a modem.
Identify names, purposes, and characteristics of other technologies that are used to establish
connectivity.
Describe and perform preventive maintenance, and troubleshoot networks.
6.1.1.1 – Define Computer Networks
1. What are networks?
2. What are social networking sites?
3. List some of the networks you might use every day.
4. What is a host?
5. What is a peripheral?
6. What is the difference between a host and a peripheral?
Chapter 6: Networks
IT Essentials 5.0
Page 1 of 35
7. What are some of the different devices that can connect to a network
8. Where are computer networks used?
9. What type of resources can be shared on a network?
10. How are network devices linked together? (give three examples)
6.1.1.2 – Features and Benefits
11. What are the benefits of networking computers?
12. What are online collaboration tools
13. What manages network resources?
14. What can be used to prevent users from overwriting files or changing files that others are
accessing at the same time?
15. What allows a group of people or an entire organization to use an application for a single fee?
16. What is centralized administration?
Chapter 6: Networks
IT Essentials 5.0
Page 2 of 35
6.1.1.3 – Activity – Advantages and Disadvantages of Networking Instructor Check__________
6.2.1.1 – LANs
17. A computer network is identified by what specific characteristics?
18. What is a LAN? (describe it)
19. What does an administrative control group do?
20. Is it a requirement that devices in a LAN be physically close? (why)
21. How big do LANs have to be?
6.2.1.2 – WLANs
22. What is a WLAN?
23. How are devices connected in a traditional LAN?
24. In what conditions is a WLAN preferable to a traditional LAN?
25. What do devices connect to in a WLAN?
Chapter 6: Networks
IT Essentials 5.0
Page 3 of 35
6.2.1.3 – PANs
26. What is a PAN?
27. What technology is usually used for PANs?
28. What is Bluetooth?
29. How many devices can Bluetooth device connect?
30. Explain what is AFH and what does it allow?
6.2.1.4 – MANs
31. What is a MAN?
6.2.1.5 – WANs
32. What is a WAN?
33. What is the most common example of a WAN?
34. What is used to connect LANs in a WAN?
6.2.1.6 – Peer-to-Peer Networks
35. Explain a peer-to-peer network.
Chapter 6: Networks
IT Essentials 5.0
Page 4 of 35
36. What is the best environment for peer-to-peer networks
37. What are the disadvantages of peer-to-peer networks?
A
B
C
D
6.2.1.7 – Client/Server Networks
38. Explain a client/server network. (sketch it)
6.2.1.8 – Activity: Matching Network Types Instructor Check__________
6.3.1.1 – Bandwidth
39. What is a packet?
40. What is a frame?
41. What is bandwidth?
42. How is bandwidth measured?
Chapter 6: Networks
IT Essentials 5.0
Page 5 of 35
43. List the common units of measure for bandwidth.
A
B
C
D
44. What is latency?
45. What type of applications can be affected by latency
6.3.1.2 – Data Transmission
46. What is simplex mode?
47. Sketch an example of simplex mode:
48. What is half-duplex mode?
49. Sketch example of half-duplex transmission:
50. What is full-duplex mode?
51. Sketch an example of full-duplex transmission:
Chapter 6: Networks
IT Essentials 5.0
Page 6 of 35
52. How does full-duplex increase network performance?
6.3.2.1 – IP Addressing
53. What defines the rules computers must follow to communicate with each other over the Internet?
54. What is an IP address?
55. Can two devices on a network share an IP Address
56. What is another name for the physical address?
57. What is another name for a logical address?
58. How are logical addresses assigned?
59. How many bits in an IPv4 address?
60. How many bits in an IPv6 address?
6.3.2.2 – IPv4
61. What is meant by dotted-decimal notation?
62. What are the two parts of an IP address?
63. What is meant by hierarchical addressing?
Chapter 6: Networks
IT Essentials 5.0
Page 7 of 35
64. What are the five classes of IP addresses?
65. Which IP class is used for experimental testing and multicast?
66. What is a private address?
67. What does the subnet mask indicate?
68. What is the default subnet mask for:
Class A –
Class B –
Class C –
69. What is subnetting?
6.3.2.3 – IPv6
70. What is each field of four hexadecimal values in an IPv6 address called?
71. What are the first three blocks of an IPv6 address called?
72. Who controls both the subnet and interface ID in an IPv6 address?
6.3.2.4 – Static Addressing
73. When is it easier to manually configure each device with the proper IP address?
74. What is the difference between an IP address and a MAC address?
75. What is the IP address configuration information you can assign to a host?
Chapter 6: Networks
IT Essentials 5.0
Page 8 of 35
6.3.2.5 – DHCP Addressing
76. What does DHCP stand for?
77. How does DHCP simplify the administration of networks?
78. What is leasing?
79. What happens when a lease expires?
80. What happens if a computer cannot communicate with the DHCP server
81. What does it mean if your computer is assigned a link-local IP address
82. What IP address configuration information does a DHCP server automatically assign?
83. What are the benefits of configuring an alternate IP address?
84. What is DNS?
Chapter 6: Networks
IT Essentials 5.0
Page 9 of 35
85. What is a DNS cache?
86. What are the benefits of a DNS cache
6.3.2.6 – ICMP
87. What is ICMP
88. What is used to test connections between computers?
89. What is the command ipconfig used for
90. How does Ping work?
91. What is another use for ping
6.3.2.7 Lab - Configure a NIC to Use DHCP in Windows 7
6.3.2.8 Lab - Configure a NIC to Use DHCP in Windows Vista
6.3.2.9 Lab - Configure a NIC to Use DHCP in Windows XP
6.3.3.1 – TCP and UDP
92. What is a protocol?
93. What are Internet protocols?
Chapter 6: Networks
IT Essentials 5.0
Page 10 of 35
94. What do protocol specifications define?
95. What are the main functions of protocols?
96. Devices and computers connected to the Internet use what protocol to communicate with each
other?
97. What are the advantages of TCP?
98. What are the advantages of UDP?
6.3.3.2 – Activity – TCP vs. UDP Instructor Check______________
6.3.3.3 – TCP and UDP Protocols and Ports
99. What is a port?
Protocol
Port
TCP/IP
Description
N/A
A suite of protocols used to transport data on the Internet.
A communication protocol that establishes a
request/response connection on the Internet
HTTPS
FTP
22
Securely connect to a remote network device.
Telnet
POP3
143
SMTP
25
389
Accesses information directories.
Manages and monitors devices on a network.
Provides shared access to files, printers and communication
between points on a network.
Resolves host names to IP addresses.
Chapter 6: Networks
IT Essentials 5.0
Page 11 of 35
6.3.3.4 Worksheet - Protocol Definitions and Default Ports
6.4.1.1 – Modems
100. What does a modem do?
101. What does the modem at the receiving end do?
102. What is the process of converting analog signals to digital and back again called?
103. What is a Point-to-Point Protocol?
6.4.1.2 – Hubs, Bridges and Switches
104. What do hubs do?
105. What is a repeater?
106. What is a disadvantage of a hub?
Chapter 6: Networks
IT Essentials 5.0
Page 12 of 35
107. Why are files broken up into packets before they are transmitted over the network?
108. What is a frame?
109. What is a network bridge?
110. How do bridges help improve the flow of traffic?
111. What is another name for a switch?
112. What does a switch do when a frame arrives at a port?
113. What is PoE and what is it used for?
6.4.1.3 – Routers and Wireless Access Points
114. What is an ISP?
Chapter 6: Networks
IT Essentials 5.0
Page 13 of 35
115. What does a wireless access point do?
116. What do routers do?
117. What is the difference between a router and a switch?
118. What is a multipurpose network device?
6.4.1.4 – NAS
119. What is a NAS?
120. What does the NAS do?
6.4.1.5 – VoIP Phones
121. What is VoIP and what does it do?
122. What type of connector does a VoIP phone use?
123. What is a disadvantage of VoIP?
Chapter 6: Networks
IT Essentials 5.0
Page 14 of 35
124. What are the three ways to use VoIP?
A
B
C
6.4.1.6 – Hardware Firewalls
125. What is a hardware firewall?
126. A firewall should be used in addition to what?
127. What are some considerations when selecting a hardware firewall?
6.4.1.7 – Internet Appliances
128. An Internet appliance is also called what?
129. What are some examples of internet appliances?
6.4.2.1 – Considerations for Cabling a Network
130. What do coaxial and twisted-pair cables use to transmit data?
Chapter 6: Networks
IT Essentials 5.0
Page 15 of 35
131. What does fiber optic use to transmit data?
132. Why is a wired network usually more secure than a wireless network?
133. When might a wireless solution be necessary?
6.4.2.2 – Coaxial Cables
134. Why can coax carry more data than UTP?
135. Why has twisted-pair replaced coax in LANs?
6.4.2.3 – Twisted-Pair Cables
136. What is twisted-pair cable used for?
137. Why is the cable twisted?
138. What is the cancellation effect?
139. What are the two basic types of twisted-pair cable?
140. What is the most commonly used cable in networks?
141. What is the maximum length of UTP?
Chapter 6: Networks
IT Essentials 5.0
Page 16 of 35
142. Why is STP more expensive?
143. What are the two factors used when determining the category of cable?
144. What is a plenum? (sketch it)
145. How many pins are in a RJ11 connector?
146. How many pins are in a RJ45 connector?
147. What does the wiring scheme define?
148. Using a sketch, show how a straight through cable differs from a crossover cable?
Chapter 6: Networks
IT Essentials 5.0
Page 17 of 35
149. What is the maximum speed of Cat5 UTP cable?
150. What is the maximum speed of Cat 5e, 6 and 6a UTP cable?
151. What is the maximum speed of Cat 7 ScTP cable?
6.4.2.4 Lab - Building Straight-Through and Crossover UTP Cables
6.4.2.6 – Fiber-Optic Cables
152. Why is fiber-optic not affected by EMI or RFI?
153. What generates the light used to represent the data transmitted on a fiber-optic cable?
154. What limits the speed of the data transmitted over a fiber-optic cable?
155. What are the common connectors for a fiber-optic cable?
156. What are the two types of fiber-optic cable?
157. What is the maximum length of single-mode fiber-optic cable?
6.5.1.1 – Logical and Physical Topologies
158. What does a logical topology describe?
159. What are the two most common logical topologies?
Chapter 6: Networks
IT Essentials 5.0
Page 18 of 35
160. What does a physical topology define?
161. Why do you need a terminator in a bus topology?
162. How does a ring topology work? (sketch it)
163. What is the advantage of a star topology? (sketch it)
164. What is a benefit of a mesh topology? (sketch it)
165. What is a hybrid topology?
6.5.1.3 – Determining the Network Topology
166. What determines the initial physical and logical topology of a network?
167. What is a site survey?
Chapter 6: Networks
IT Essentials 5.0
Page 19 of 35
6.6.1.1 – Standards Organizations
168. What do manufacturers use standards for?
169. What do standards ensure?
170. What is IEEE best known for?
6.6.1.2 – IEEE 802.3
171. What is the standard for Ethernet architecture?
172. What does CSMA/CD stand for?
173. What is a backoff algorithm?
6.6.1.3 – Ethernet Technologies
174. What is the transfer rate of 100BASE-TX?
175. What is the transfer rate of 1000BASE-T?
176. What is the transfer rate of 10GBASE-T?
6.6.1.4 – IEEE 802.11
177. What is the standard for wireless networks?
178. Which wireless standard operates in the 5 GHz radio frequency range with a maximum range of
45.7 m (150 ft)?
179. Which wireless standard operates in the 2.4 GHz radio frequency range with a maximum range
of 91m (300ft)?
180. Which wireless standard has the longest range?
Chapter 6: Networks
IT Essentials 5.0
Page 20 of 35
6.7.1.1 – TCP/IP
181. What is an architectural model?
182. Who created the TCP/IP model?
183. What are the four layers of the TCP/IP model?
184. Where does a message begin in the TCP/IP model?
185. What is added as the message moves down through each layer?
186. What network services are provided to the user at the application layer? email.
187. What do the transport layer protocols provide?
188. What two protocols are transport layer?
189. What do Internet layer protocols provide
Chapter 6: Networks
IT Essentials 5.0
Page 21 of 35
190. What are defined in the Network Access Layer protocols?
6.7.1.2 – OSI
191. How many layers are in the OSI model?
192. What is a protocol stack?
193. Where are protocol stacks implemented?
194. Which layer is responsible for providing network access to applications?
195. What happens at the transport layer?
196. At which layer does the segment become a packet?
197. What information is contained in a packet?
198. What information does a frame contain?
199. What are the two mnemonics for the OSI Model?
A
P
S
T
N
D
P
Chapter 6: Networks
IT Essentials 5.0
Page 22 of 35
6.7.1.4 – Activity – Match the OSI Model to the TCP/IP Model Instructor Check_____________
6.8.1.1 – Network Installation Completion List
200. What can be used to install a wireless network?
201. What is a cable tester used for?
202. Where is the best place for a wireless access point? (sketch this)
203. What is the ipconfig/all command used for?
204. What is the ping command used for?
6.8.2.1 – Selecting a NIC
205. What is required to connect to the network?
206. Most laptop network interfaces are either _________________ into the motherboard or fit into a
______________________ or _________________________expansion slot.
207. USB network adapters plug into a ______________ and can be used with both
___________________ and _______________________.
Chapter 6: Networks
IT Essentials 5.0
Page 23 of 35
208. What should you do before purchasing a NIC?
209. What do you need to connect to a wireless network?
6.8.2.2 Worksheet - Internet Search for NIC Drivers
6.8.2.3 – Installing and Updating a NIC
210. What is a best practice when running driver updates?
211. What is the path to the device manager in Windows 7?
212. What is the path to the device manager in Windows XP?
213. How do you uninstall a NIC driver?
6.8.2.4 Lab - Install a Wireless NIC in Windows 7
6.8.2.5 Lab - Install a Wireless NIC in Windows Vista
6.8.2.6 Lab - Install a Wireless NIC in Windows XP
6.8.2.7 – Configuring a NIC
214. What information must every NIC be configured with?
215. Can the MAC address be changed?
216. What is a benefit of setting up an alternate IP address?
Chapter 6: Networks
IT Essentials 5.0
Page 24 of 35
6.8.2.8 – Advanced NIC Settings
217. What is the result of improperly setting the advanced features?
218. What is a duplex mismatch?
219. What is Wake on LAN?
220. What is very low power mode?
221. What is a magic packet?
222. What is QoS?
6.8.3.1 – Connecting to the Router
223. What can no activity on the link lights of a NIC indicate
Chapter 6: Networks
IT Essentials 5.0
Page 25 of 35
6.8.3.2 – Setting the Network Location
224. What are the three network location profiles in Windows 7 and Vista?
225. What is a homegroup?
226. When should you choose a home network location profile?
227. Which network location profile provides the most protection?
228. How do you release and renew an IP address?
6.8.3.4 – Basic Network Setup
229. What is Network Address Translation?
6.8.3.5 Lab - Connect to a Router for the First Time
6.8.3.7 – Basic Wireless Settings
230. Why might you use a mixed mode wireless network environment?
231. What is the SSID?
232. What must you do when the SSID broadcast is disabled?
233. What radio frequency range do 802.11b and 802.11g transmit in?
Chapter 6: Networks
IT Essentials 5.0
Page 26 of 35
234. How does WEP work?
235. What is the improved version of WEP called?
236. What kind of security does WPA2 provide?
6.8.3.8 Lab - Configure Wireless Router in Windows 7
6.8.3.9 Lab - Configure Wireless Router in Windows Vista
6.8.3.10 Lab - Configure Wireless Router in Windows XP
6.8.3.12 – Testing Connectivity with the Windows GUI
237. What is the easiest way to test for an internet connection?
238. What are wireless locators?
6.8.3.13 – Testing Connectivity with the Windows CLI
239. What does the ipconfig command do?
240. What does the ping command do?
241. What ping command option will give you the hostname of a computer from its IP Address?
242. What do you use the net command for?
243. What protocol do net commands use?
244. What does tracert do?
Chapter 6: Networks
IT Essentials 5.0
Page 27 of 35
245. What is the first listing in a tracert result?
246. What is used to test and troubleshoot DNS servers?
6.8.3.14 Lab - Test the Wireless NIC in Windows 7
6.8.3.15 Lab - Test the Wireless NIC in Windows Vista
6.8.3.16 Lab - Test the Wireless NIC in Windows XP
6.8.4.1 – Domain and Workgroup
247. What are domain and workgroups?
248. What is a domain?
249. What does a domain controller do?
250. Why should routine backups of all files on a server be performed?
251. What is a workgroup?
6.8.4.2 – Connecting to a Workgroup or a Domain
252. What must be done before computers can share resources?
Chapter 6: Networks
IT Essentials 5.0
Page 28 of 35
253. What must you do after changing a domain name or workgroup name?.
6.8.4.3 – Windows 7 Homegroup
254. How many homegroups can a computer belong to?
255. What network location profile must you apply to use homegroups?
6.8.4.6 – Network Shares and Mapping Drives
256. What is useful about mapping a local drive?
257. Mapping a local drive is done by assigning what to the resource on a remote drive?
258. What permissions are available to be assigned to a file or folder?
259. Which permission allows a user to add files and subfolders, change the data in files and delete
subfolders and files?
260. What are the maximum simultaneous file sharing connections in Windows 7?
6.8.4.7 Lab - Share a Folder, Create a Homegroup, and Map a Network Drive in Windows 7
6.8.4.8 Lab - Share a Folder and Map a Network Drive in Windows Vista
6.8.4.9 Lab - Share a Folder and Map a Network Drive in Windows XP
6.8.4.10 – VPN
261. What is a VPN? (sketch it)
262. What access does a user have when connected to a network through a VPN?
Chapter 6: Networks
IT Essentials 5.0
Page 29 of 35
263. VPN connections are also known as what?
6.9.1.1 – Brief History of Connection Technologies
264. What was the Internet typically used for in the 1990s?
265. What does POTS stand for?
266. How does dialup work?
267. Which connection type uses telephone wires for analog telephone service, is a standard for
sending voice, video and data over normal telephone wires and uses multiple channels to carry
different types of service?
268. What is broadband?
269. What is an example of broadband?
270. What are some common broadband network connections?
6.9.1.2 – DSL and ADSL
271. What does DSL use to provide high-speed digital data communication?
272. How are ISDN and DSL different?
273. What prevents DSL signals from interfering with phone signals?
274. What is downloading?.
Chapter 6: Networks
IT Essentials 5.0
Page 30 of 35
275. What is uploading?
276. ADSL has a fast ____________________rate which is beneficial to users who are downloading
large amounts of data. The _____________________ rate of ADSL is slower than the
_____________________ rate.
6.9.1.3 – Line of Sight Wireless Internet Service
277. What is line of sight wireless Internet?
278. What is required between the transmission tower and the customer?
279. How far can lower frequency signals of 900 MHz travel?
280. How far can higher frequency signals of 5.7GHz travel?
281. What can affect signal strength and performance of line of sight wireless Internet?
6.9.1.4 – WiMAX
282. What is WiMAX?
283. What is the standard for WiMAX?
284. What two methods are available for transmitting WiMAX?
285. What is Fixed WiMAX?
Chapter 6: Networks
IT Essentials 5.0
Page 31 of 35
286. What is Mobile WiMAX?
6.9.1.5 – Other Broadband Technologies
287. What is cellular technology?
288. What cellular WAN technology has data speeds between 144Kb/s and 2Mb/s?
289. What are the data speeds of 4G technology?
290. What is GSM?
291. What is EDGE?
292. What is a cable modem?
293. When is broadband satellite used?
294. What are the download and upload speeds of broadband satellite?
295. What is a disadvantage of broadband satellite?
6.9.1.6 Worksheet - Answer Broadband Questions
Chapter 6: Networks
IT Essentials 5.0
Page 32 of 35
6.9.1.7 – Selecting an ISP for the Customer
296. What are the four main considerations for an Internet connection?
A
B
C
D
297. What are the major disadvantages of POTS?
298. Where does DSL work better and faster?
Type
Advantages
Disadvantages
Speed
POTS
ISDN
DSL
Cable
Satellite
Cellular
6.9.1.8 Worksheet - ISP Connection Types
Chapter 6: Networks
IT Essentials 5.0
Page 33 of 35
6.10.1.1 – Preventative Maintenance Procedures
299. What is one of the biggest problems with network devices?
300. What should you do as part of a regularly scheduled maintenance program?
6.11.1.1 – Identify the Problem
301. What should you do to assess how complicated a problem is?
302. Where should you start the troubleshooting process if there is a problem with all the computers
on the network?
303. What is the first step in the troubleshooting process?
6.11.1.2 – Establish a Theory of Probable Cause
304. What are some common causes of network problems?
6.11.1.3 – Test the Theory to Determine Cause
305. What should you do if a quick procedure does correct the problem?
6.11.1.4 – Establish a Plan of Action to Resolve the Problem and Implement the Solution
306. What are some sources you can use to gather additional information to resolve a problem?
6.11.1.5 – Verify Full System Functionality and Implement Preventative Measures
307. What command can you use to verify network connectivity?
308. What does the tracert command do
Chapter 6: Networks
IT Essentials 5.0
Page 34 of 35
6.11.2.1 – Identify Common Problems and Solutions
309. What is the probable cause if a user cannot telnet into a remote device?
310. What is the probable cause if the computer has an IP address of 169.254.x.x
311. What might be a probable cause if a user can log into the local network but cannot access the
Internet?
6.12.1.1 – Summary
312. What is a computer network composed of?
313. What does a client/server network use that a peer-to-peer network does not have?
314. What protocol is the dominant standard for the Internet?
315. What CLI tools can be used to test network connectivity?
316. What are the three transmission methods to send signals over data channels?
Chapter 6: Networks
IT Essentials 5.0
Page 35 of 35