Midterm Exam b Answers

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TEC 383 Telecommunication TechnologyExam One Mr. Foster March, 2004

Exam instructions: Follow the directions at the beginning of each section. In the single section, (Multiple Choice), darken with number 2 pencil the corresponding locations on the scantron sheet.

Also in the scantrons appropriate locations, print your name & Social Security Number and darken w/ number 2 pencil the corresponding loca

When completed with the Exam, follow the instructions at the end of the Matching section.

Section 1. Multiple Choice (1 point each) Select the best answer

101.Your manager has told you to use a Class B network address and use the standard subnet mask plus fourbits. When you calculate this, you determine you end up with how many networks and hosts per network?

A. 14 networks with 14 hosts per networkB. 14 networks with 4,094 hosts per networkC. 30 networks with 1,046 hosts per networkD. 30 networks with 7 hosts per network

102. Which of the following are functions of the Transport layer of the OSI model?A. Placing data onto a physical mediumB. Route determination and addressingC. Session establishment and managementD. Reassembling data into a data streamE. All the above

103. Of the following descriptors listed below, the two which describe the UDP of TCP/IP is:

1. A reliable delivery service.2. Connectionless.3. An unreliable connection service4. Connection oriented.

A. 1 and 2B. 3 and 4C. 2 and 3D. 1 and 4

104. What is the second subnet ID for the network 25.0.0.0 with a subnet mask of 255.192.0.0?A. 25.32.0.0B. 25.64.0.0C. 25.128.0.0D. 25.192.64.0

105. Which of the following is NOT a routing protocol?A. Internet Protocol (IP)B. Open Shortest Path First (OSPF)C. Routing Information Protocol (RIP)D. Interior Gateway Routing Protocol (IGRP)

106. What is the purpose of ARP?A. Resolves IP addresses to DLCI addressB. Resolves MAC addresses to DLCI addressesC. Resolves IP addresses to hostnamesD. Resolves MAC addresses to hostnamesE. Resolves IP addresses to Physical addresses.F. Resolves MAC addresses to IP addresses.

107. Of the following descriptors listed below, the two which describe the IP portion of TCP/IP is:1. A reliable delivery service.2. Connectionless.3. An unreliable connection service4. Connection oriented.

A. 1 and 2B. 3 and 4C. 2 and 3D. 1 and 4

Exam instructions: Turn this Exam sheet over for more Questions.

Print your name:


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108. Which memory component on a Cisco router can contain multiple copies of the IOS software?A. FlashB. RAM/DRAMC. NVRAMD. ROM

109. Synchronization of network timing is done at which layer?A. Datalink layerB. Transport layer C. Physical layer D. Session layer

110. Which of the following will set a message, to anyone connecting the router?A. Banner motdB. Banner incomingC. Banner execD. Banner

111. If you wanted to display the text describing all the first parameter options, what would you type?A. commands shB. sh ?C. sh?D. sh ? more

112. Which command would set the encrypted secret password to cisco?A. Enable secret cisco encrypt

B. Enable secret 5 ciscoC. Enable secret ciscoD. Enable-secret ciscoE. Enable password cisco

113. Which command could be used to set the speed of a Cisco router's serial interface?A. clock rate 9600B. clockrate 56000C. interface speed 64000D. int s0 speed 56000

114. How do you suspend a Telnet session?A. Use the command suspend sessionB. Use the keystrokes CTRL-ALT-6

C. Use the keystrokes CTRL-SHIFT-6 XD. Use the keystrokes CTRL SHIFT-DEL

115. What command is used to display the configured IP routing protocols?A. show ip protocolsB. show protocolsC. show ip routeD. debug all

116. Which of the following statements is true in general when an application at the source wishes to send datato an application at the destination address?

A. The lower layer at destination adds its own header information to the data it receives from the higher layerB. The lower layer at source adds its own header information to the data it receives from the higher layerC. The lower layer at destination strips header information from the data added by the higher layer

D. The higher layer at source strips header information added to the data by the lower layer

117. You are a network administrator for a small retailer company, ABC Ltd. Your company has recently beenassigned one block of Class C IP addresses from a local ISP. There is a need to further divide the Class Cblock into six subnets with a requirement that each subnet can accommodate at least 16 hosts. It is up to yas the network administrator to allocate the correct subnet mask. Which of the following would you select?

A. 255.255.255.128B. 255.255.255.192C. 255.255.255.224D. 255.255.255.240



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118. By default, how many commands are stored in the command history buffer?A. 5B. 10C. 15D. 20

119. What which of the following is an invalid host address using a netmask of 255.255.255.192A. 10.1.1.1B. 10.1.1.66C. 10.1.1.127D. 10.1.1.130

120. What layer of the OSI reference model specifies data formats, such as encryption?A. Physical layer E. Session layerB. Data Link layer F. Presentation layer C. Network layer G. Application layer D. Transport layer

121. To determine the operational status of an interface, which of the following commands could you use?A. display interface statusB. show interfaceC. show status interfaceD. display interface

122. If you type erase startup-config and reboot your router, what router mode will you be in?A. SetupB. UserC. PrivilegedD. Global ConfigurationE. Interface Configuration

123. What is the purpose of reverse ARP?A. Resolves IP addresses to DLCI addressB. Resolves MAC addresses to DLCI addressesC. Resolves IP addresses to hostnamesD. Resolves MAC addresses to hostnamesE. Resolves IP addresses to Physical addresses.

F. Resolves MAC addresses to IP addresses.124. Which of the following command CANNOT run from user level?

A. Show usersB. Show versionC. Show running-configD. Show arpE. Show interface serial 0F. Show aliases

125. If you wanted to find out which commands where available that started with the letter "T"A. Help T*B. Help T?C. T ?

D. T?E. ? TF. man T*G. Console mode

126. What mode do you have to enter before you are allowed to make changes to the routers configuration?A. User EXEC modeB. High-level access modeC. Global Configuration modeD. Console mode



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127. What is the term for wrapping a data unit with a header and passing it to the next protocol?A. WindowingB. EncapsulationC. WrappingD. Heading

128. Geoff is a network administrator of a small network consists of three Cisco 2600 routers interconnected byframe relay cloud. He wants to add a static router to one router located remotely. He connects to the routerusing telnet from his workstation. Which layer of the OSI model does Geoff use for this task?

A. Physical layer E. Session layerB. Data Link layer F. Presentation layer C. Network layer G. Application layer D. Transport layer

129. What is the address range of a Class C network address in binary?A. 01xxxxxxB. 0xxxxxxxC. 10xxxxxxD. 110xxxxx

130. The layered approach of the OSI results in:A. Increased development costs for a specific vendor product.B. Increased marketability for a specific vendor product.C. A hierarchical tool for network architecture.D. All of the aboveE. B & C only

F. A & C only

131. At the physical layer in the OSI model the data is broken into:A. cellsB. packetsC. fragmentsD. framebits

132. A Frame Check Sequence (FCS) in the IEEE 802.3 frame includes:A. A Cyclic Redundancy Check (CRC) valueB. A source station addressC. A receiving station addressD. A sequence number of the frame

133. In a Token Ring network architecture, if a node receives a token and has data to transmit, then:A. The node does nothingB. The node waits for data to be transmittedC. The node converts the token into a start-of-frame fieldD. None of the above

134. Which of the following could be a unicast?A. 10.3.1.27/30B. 255.255.255.255C. 172.16.128.255/18D. 192.168.10.48/29

135. Which command would you use to view the contents of RIP update messages that are being sent and receiveA. show ip routeB. show ip protocol

C. debug ripD. debug ip rip

136. What command allows you to view the configuration in RAM?A. Show running-configB. Show startup-configC. Show ram-configD. Show config



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137. Given a subnet mask of 255.255.240.0, which of these addresses is not valid host address?A. 150.150.37.255B. 150.150.16.2C. 150.150.31.255D. 150.150.49.15

138. After giving the command interface Ethernet 0 from global configuration mode, the routers prompt wouldchange to which of the following:

A. router (config) #B. router # interfaceC. router (config-if)#D. router # (config-line)

139. While troubleshooting an e-mail problem for a consumer you recognized that the user had set up the e-mailapplication with the following parameters: POP3 port 110 and SMTP port 52. You have determined that oneof these settings is incorrect because you are able to receive mail but not send it. Which setting must bechanged to allow you also to send mail?

A. Change POP3 to port 21B. Change SMTP to port 25C. Change POP3 to port 101D. Change SMTP to port 21

140. A good connection is indicated by which of the following in an output display of the ping command?A. !!!!!B. ..C. xxxxx

D. ^^^^^

141. What is ICMP?A. It is a network layer protocol that handles control messages.B. Interior Control Messaging ProtocolC. It is a session layer API that makes remote procedures transparent to a userD. It is a transport layer function for unreliable transport

142. What is the purpose of a MAC address in a network environment?A. MAC addresses will assist the application layer to provide needed network services.B. MAC addresses are used to implement security procedures.C. MAC addresses are implemented in non-Frame Relay networks only.D. MAC addresses are used to locate specific ports in the network.E. MAC addresses provide modulation access control.

143. Which combination of keys can you use to move back one character?A. Ctrl+PB. Ctrl+BC. Ctrl+PCD. Ctrl+Shift

144. Which of the numbered statements in the box are basic functions of Ethernet?

A. 2 & 3 E. 2 & 4

B. 4 & 1 F. 1 & 2

C. 3 & 1

D. 3 & 4

145. At the network layer, frames are converted to:

A. FramesB. BitsC. PacketsD. Segments

146.You have been assigned the IP address of 211.242.15.0, subnet mask 255.255.255.248 for your network.Which of the following addresses IS NOT a valid host address?

A. 211.42.15.16B. 211.42.15.17C. 211.42.15.18D. 211.42.15.19


1. Transmittin

receiving data

2. Logical

addressing


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147. Transport layer protocol port number 23 identifies segments for which application layer service?A. DNSB. POP3C. TelenetD. FTPE. SMTP

148. Which command will show you the contents of the EEPROM in your computer?A. show flashB. show flash fileC. show ip flash

D. sh ver 149. To perform an extended PING to address 1.1.1.1, you would issue which of the following commands?

A. Router>ping 1.1.1.1B. Router(config-if)#PING 1.1.1.1C. Router(config)#pingD. Router#ping

150. How many host addresses are available per subnet for the following subnet 138.87.0.0/26?A. 62B. 126C. 510D. 1022E. 2046

151. Which of the following IP addresses is a multicast destination address?A. 123.168.2.5B. 23.112.35.1C. 230.0.0.2D. 255.255.255.255

152. In reference to the OSI model, the layer that defines network segmentation.A. Physical layer E. Session layerB. Data Link layer F. Presentation layer C. Network layer G. Application layer D. Transport layer

153. You need to configure an IP address for the second serial interface on you router.A. Enable yourself; Config P; Interface S2; IP address 153.23.12.14 255.255.255.0

B. Enable yourself; Config T; Interface S1, IP address 153.23.12.14 255.0.0.0C. Enable yourself; Config T; Interface S0, IP address 153.23.12.14 255.255.0.0D. Enable yourself; Config T; Interface S1, IP address 153.23.12.14 255.255.0.0

154. What are the well-known port address for FTP?A. 25B. 21C. 23D. 80

155. To view the configuration register settings, which command do you enter?A. show running-configurationB. show startup-configurationC. show version

D. show controllers

156. Which network device separates collision domains, but does not separate broadcast domains.A. RepeaterB. HubC. SwitchD. Router

157. What command allows you to view the configuration in RAM?A. show running-configB. show startup-configC. show RAM-configD. show config



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158. Customers are calling you; after moving their PCs from the second floor to their new offices on the ninthfloor, they can no longer connect to the network. They do not receive any errors until they try to browse orconnect to a network share. The PCs are, however, able to see each other. What is the problem?

A. The ninth floor does not have a network connection.B. The IP address they used on the second floor is in a different subnet. So, when they moved to the ninth floor,

they no longer work and must be changed to an IP address in the ninth floors subnet.C. There were no plans to put PCs on the ninth floor when the network was designed, so PCs will not work when

connected to the hubs on that floor.D. Not enough information given to determine cause.

159. You have a Class B network address divided into 30 subnets. You will add 25 new subnets within the nextyear. You need 600 host IDs for each subnet. Which subnet mask should you use?

A. 255.192.0.0B. 255.254.0.0C. 255.255.248 0D. 255.255.252.0

160. You are noticing an extreme slowdown on your network and suspect that it is you ISP, which claims to berunning at peak efficiency. You have checked your network and cannot find any place where packetswould bottleneck. What command can you issue to follow your packets as they leave your router and helpto determine the bottlenecks location?

A. PINGB. TraceRouteC. IP hostnameD. Router RIP

161. What command can be used to see the routers neighbors from your local router if no network layerprotocols are configured?A. show cdp neighborB. show neighborC. show networkD. show cdp

162. Which of the following represents access via a physical connection of a terminal to a router?A. Virtual terminalB. ConsoleC. IOSD. All of the above

163. What is the level of access to the router in which you are allowed to change the routers configuration?A. Console mode

B. User EXEC modeC. High-level access modeD. Privileged EXEC mode

164. After giving the command interface Ethernet 0 from global configuration mode, the router is most likely torespond with:

A. router(config)#B. router#interfaceC. router(config-if)#D. router#(config-int)

165. Which are the types of memory elements in a Cisco router?A. RAM, ROM, NVRAM, and BootB. RAM, ROM, NVRAM, and FlashC. Config, RAM, ROM, NVRAM, and Flash

D. Buffers, RAM, NVRAM, Flash166. If you enter a command that the IOS does not recognize, what happened by default

A. Tries to execute the closest command found in its command setB. Assumes it is a host name and seeks DNS resolution.C. Continues search onto NVRAM.D. Invalidates the configuration

167. What is the command to manually enter a static route?A. IP route networkB. IP route C. IP route D. IP route



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168. Which protocol works at the Internet layer and is responsible for making routing decisions?A. UDPB. TCPC. ARPD. IP

169. UDP works at which layer of the DOD model?A. TransportB. InternetC. Host-to-HostD. Data Link

170. Which of the following protocols uses distance vector routing?A. Open Shortest Path First (OSPF)B. Cisco Discovery Protocol (CDP)C. Point-to-point protocol (PPP)D. Interior Gateway Routing Protocol (IGRP)

171. Ping uses which Internet layer protocol?A. FTPB. ARPC. RARPD. ICMP

172. What is the IOS command to display the contents of the routing table?A. sh ARPB. sh ip table

C. sh ip routeD. sh run

Section 2. Matching Section (1 point each) -

Select the Description found in the lettered box area below that is most accounted to the Interface/Port indicated by thepointer of the numbered box and record it on the answer form.

This Exam is complete Please place the Exam materials on the table in the front of the room.

Both the Test booklets and the Scanton Sheets are to be turned in.

If there are any questions, ask the facilitator what should be done.

173. D 174. C 175. E

A. Auxiliary Port (RJ-45)

B. Synchronous Serial Port (DB-60) Serial 1

C. Synchronous Serial Port (DB-60) Serial 0

D. Ethernet AUI Port (DB-15)

E. Console Port (RJ-45)

F. Synchronous Serial Port (DB-60) Serial 2

Midterm Exam b Answers

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