CCNA Cisco Certified Network Associate Study Guide - FTP Server

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Ethernet IEEE 802.3 FastEthernet FastEthernet IEEE 802.3 Cisco 1900 IOS Configuration Commands 591 Once you add the hardware address of the destination device, add the interface address this destination hardware address is associated with. Todd1900EN(config)#mac-address-table restricted static 00A0.246E.0FA8 e0/2 ? Ethernet IEEE 802.3 FastEthernet FastEthernet IEEE 802.3 Now that you have entered the destination information, enter the source interface that is allowed to communicate with the destination address. Todd1900EN(config)#$-table restricted static 00A0.246E.0FA8 e0/2 e0/5 Once you have finished your command string, you can see the three different types of entries we now have in the MAC filter table by using the show mac-address-table command (use sh mac for a shortcut). Todd1900EN#sh mac Number of permanent addresses : 1 Number of restricted static addresses : 1 Number of dynamic addresses : 2 Address Dest Interface Type Source Interface List ---------------------------------------------------------------- 00A0.2448.60A5 Ethernet 0/4 Permanent All 00A0.246E.0FA8 Ethernet 0/2 Static Et0/5 0000.8147.4E11 Ethernet 0/5 Dynamic All 0000.8610.C16F Ethernet 0/1 Dynamic All Todd1900EN# The command I just entered has restricted interface 0/5 to only send frames to interface 0/2 using the destination hardware address 00A0.246E.0FA8. Remember that you can clear the entries with the clear mac-addresstable [dynamic/permanent/restricted] [int dest] [int source] command.
592 Appendix B � Configuring the Catalyst 1900 Switch Configuring Port Security Port security is a way of stopping users from plugging a hub into their jack in their office or cubicle and adding a bunch of hosts without your knowledge. By default, 132 hardware addresses can be allowed on a single switch interface. To change this, use the interface command port secure maxmac-count. The following switch output shows the command port secure maxmac-count being set on interface 0/2 to allow only one entry. Todd1900EN#config t Enter configuration commands, one per line. End with CNTL/Z Todd1900EN(config)#int e0/2 Todd1900EN(config-if)#port secure ? max-mac-count Maximum number of addresses allowed on the port Todd1900EN(config-if)#port secure max-mac-count ? Maximum mac address count for this secure port Todd1900EN(config-if)#port secure max-mac-count 1 The secured port or ports you create can use either static or sticky-learned hardware addresses. If the hardware addresses on a secured port are not statically assigned, the port sticky-learns the source address of incoming frames and automatically assigns them as permanent addresses. Sticky-learns is a term Cisco uses for a port dynamically finding a source hardware address and creating a permanent entry in the MAC filter table. Using the Show Version Command You can use the show version command to view basic information about the switch. This includes how long the switch has been running, the IOS version, and the base MAC address of the switch. This MAC address is important because if you lose your password, there is no password recovery on the 1900 switch. You need to send Cisco this MAC address, and they’ll send you a password that will allow you to get into your switch.
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CCNA Cisco Certified Network Associ
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Associate Publisher: Neil Edde Cont
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This book is dedicated to all the C
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Introduction Welcome to the excitin
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Introduction xxv installing, managi
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Introduction xxvii but you still ha
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Introduction xxix To meet the CCNP
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Introduction xxxi through!) Also, b
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CCDPs must also demonstrate profici
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Introduction xxxv answering the rev
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Introduction xxxvii don’t need to
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Introduction xxxix questions and un
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Assessment Questions Assessment Que
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Assessment Questions xliii 9. Which
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Assessment Questions xlv 17. What i
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Assessment Questions xlvii 23. Whic
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Assessment Questions xlix 31. What
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Assessment Questions li 39. What ar
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Assessment Questions liii 47. Which
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Answers to the Assessment Questions
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Chapter 1 Internetworking THE CCNA
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Internetworking Models Internetwork
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The OSI Reference Model FIGURE 1.1
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FIGURE 1.3 Layer functions The OSI
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The OSI Reference Model 9 JPEG The
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The OSI Reference Model 11 Connecti
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The OSI Reference Model 13 answer t
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The OSI Reference Model 15 before s
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The OSI Reference Model 17 The rout
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The OSI Reference Model 19 For a ho
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Ethernet Networking 21 The Physical
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Ethernet Networking 23 Ethernet is
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FIGURE 1.11 802.3 and Ethernet fram
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802.2 and SNAP FIGURE 1.12 802.2 an
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Ethernet Networking 29 You can iden
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FIGURE 1.13 Data encapsulation Data
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The Cisco Three-Layer Hierarchical
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The Core Layer The Cisco Three-Laye
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Assembling and Cabling Cisco Device
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6-3 7-2 8-1 Selecting Cisco Product
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FIGURE 1.20 Cisco hub products Cisc
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Cisco Switches Selecting Cisco Prod
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Summary Key Terms Summary 51 This c
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Written Labs In this section, you w
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Lab 1.2: Defining the OSI Layers an
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Review Questions Review Questions 5
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8. How is a crossover cabled? Revie
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Review Questions 61 15. Routers can
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64 Chapter 1 � Internetworking An
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Chapter 2 Switching Technologies TH
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Layer-2 Switching 73 switches are f
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Layer-2 Switching 75 switch now has
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Loop Avoidance FIGURE 2.2 Broadcast
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Spanning-Tree Protocol (STP) Spanni
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Spanning-Tree Protocol (STP) 81 802
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Spanning-Tree Protocol (STP) 83 If
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FIGURE 2.6 Different switching mode
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Key Terms Summary 87 Before taking
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Review Questions 1. Which LAN switc
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Review Questions 91 8. What are the
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15. What is the default LAN switch
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96 Chapter 2 � Switching Technolo
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98 Chapter 2 � Switching Technolo
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The Transmission Control Protocol/I
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102 Chapter 3 � Internet Protocol
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Answers to the Written Lab 167 8. S
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Answers to Review Questions 169 12.
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In this chapter, you will be introd
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174 Chapter 4 � Configuration and
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Routing This chapter will discuss t
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238 Chapter 5 � IP Routing In our
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240 Chapter 5 � IP Routing router
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242 Chapter 5 � IP Routing Figure
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248 Chapter 5 � IP Routing 2621A
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252 Chapter 5 � IP Routing 2501C(
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256 Chapter 5 � IP Routing exampl
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260 Chapter 5 � IP Routing Routin
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266 Chapter 5 � IP Routing It is
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268 Chapter 5 � IP Routing RIP ha
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282 Chapter 5 � IP Routing Comman
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286 Chapter 5 � IP Routing 2621(c
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288 Chapter 5 � IP Routing 2. Aft
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292 Chapter 5 � IP Routing 5. Wha
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296 Chapter 5 � IP Routing Answer
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298 Chapter 5 � IP Routing 13. C.
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Virtual LANs A Virtual Local Area N
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302 Chapter 6 � Virtual LANs (VLA
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Answers to Review Questions Answers
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Chapter 7 Managing a Cisco Internet
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The Internal Components of a Cisco
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Managing Configuration Registers 32
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Backing Up and Restoring the Cisco
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Using Cisco Discovery Protocol 345
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Using Telnet Using Telnet 351 Encap
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Using Telnet 353 Remember that the
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Checking Telnet Connections Using T
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Resolving Hostnames 357 This output
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Resolving Hostnames 359 To verify t
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Resolving Hostnames 361 it doesn’
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apollo Apollo echo appletalk Applet
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Key Terms Summary 365 Next, you lea
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Command Description Summary 367 no
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Written Lab Write in the answers to
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Hands-on Labs 371 flash tftp. This
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Lab 7.5: Using Telnet Hands-on Labs
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Hands-on Labs 375 4. Test your host
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Review Questions 377 5. Which memor
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13. What does the command cdp timer
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382 Chapter 7 � Managing a Cisco
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384 Chapter 7 � Managing a Cisco
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Most network administrators have, a
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388 Chapter 8 � Configuring Novel
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Answer to Review Questions Answer t
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Chapter 9 Managing Traffic with Acc
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Access Lists 441 interface. Applyin
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Access Lists 443 IP extended acces
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Access Lists 445 Now, that was the
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Access Lists 447 On the Acme router
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Access Lists 449 Once you choose th
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discard Discard (9) domain Domain N
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IPX Access Lists 453 LAN. However,
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IPX Access Lists 455 The access lis
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Router(config)#access-list 1010 per
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Key Terms Summary 459 � How to co
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Written Lab In this section, write
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Hands-on Labs 463 3. Choose an acce
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Hands-on Labs 465 5. Add the source
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Hands-on Labs 467 3. Configure an a
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Review Questions 469 4. Which of th
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Review Questions 471 10. Which of t
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Review Questions 473 18. Which acce
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Answers to Review Questions Answers
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Chapter 10 Wide Area Networking Pro
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Wide Area Networks 479 Demarcation
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High-Level Data-Link Control Protoc
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Point-to-Point Protocol (PPP) Point
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Point-to-Point Protocol (PPP) 485 A
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Point-to-Point Protocol (PPP) 487 I
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Frame Relay 489 Frame Relay provide
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Frame Relay 491 7. The CO receives
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Local Management Interface (LMI) Fr
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Frame Relay 495 out the same interf
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appletalk protocol eigrp no appleta
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Here’s an example using the Frame
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Frame Relay 501 really might need.
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Frame Relay 503 To see information
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Integrated Services Digital Network
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FIGURE 10.7 ISDN BRI reference poin
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Integrated Services Digital Network
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Dial-on-Demand Routing (DDR) 511 Th
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Dial-on-Demand Routing (DDR) 513 Th
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Optional Commands Dial-on-Demand Ro
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Summary Sho ip route Shows all rout
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Commands in This Chapter Command De
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Command Description Summary 521 sho
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Written Lab 523 13. Write the comma
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Hands-on Labs 525 3. To change the
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Hands-on Labs 527 In my seminars I
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FIGURE 10.10 ISDN lab E0 172.16.30.
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8. Configure the dialer information
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Review Questions 533 5. Regarding F
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13. Which command will list all con
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(The answers to the questions begin
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Page 579 and 580: 544 Appendix A � Practice Exam Qu
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Page 583 and 584: 548 Appendix A � Practice Exam 18
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642 Appendix C � Commands in This
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650 Glossary A&B bit signaling Used
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652 Glossary address learning Used
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654 Glossary anycast An ATM address
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656 Glossary ATM Asynchronous Trans
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658 Glossary auxiliary port The con
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660 Glossary bridge A device for co
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662 Glossary CBR Constant Bit Rate:
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664 Glossary circuit switching Used
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666 Glossary configuration register
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668 Glossary crankback In ATM, a co
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670 Glossary DDP Datagram Delivery
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672 Glossary DSR Data Set Ready: Wh
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674 Glossary ELAN Emulated LAN: An
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676 Glossary failure domain The reg
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678 Glossary FragmentFree LAN switc
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680 Glossary helper address The uni
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682 Glossary IGP Interior Gateway P
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684 Glossary IP multicast A techniq
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686 Glossary learning bridge A brid
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688 Glossary MAC Media Access Contr
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690 Glossary MLP Multilink PPP: A t
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692 Glossary NetBEUI NetBIOS Extend
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694 Glossary NT1 network terminatio
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696 Glossary packet switch A physic
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698 Glossary poison reverse updates
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700 Glossary PVP tunneling permanen
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702 Glossary route poisoning Used b
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704 Glossary server Hardware and so
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706 Glossary span A full-duplex dig
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708 Glossary SR/TLB source-route tr
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710 Glossary subinterface One of ma
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712 Glossary TE terminal equipment:
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714 Glossary TRIP Token Ring Interf
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716 Glossary WAN wide area network:
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