cisco networking academy program ccna 1 french

... Trang 1Cisco Networking Academy Program CCNA 1 and 2 Companion Guide Third Edition Cisco Systems, Inc Cisco Networking Academy Program Cisco Press 201 West 103rd Street Indianapolis, ... www.ciscopress.com 1102.book Page i Tuesday, May 20, 2003 2:53 PM Trang 2Cisco Networking Academy Program CCNA 1 and 2 Companion Guide Third Edition Cisco Systems, Inc. Cisco Networking Academy Program ... Summary 100 Key Terms 103 Check Your Understanding 106 Chapter 3 Networking Media 115 Electricity Basics 115 Atoms and Molecules 115 Electrical Properties of Matter 117 Measuring...

Ngày tải lên: 04/07/2014, 18:20

... card), 10 NICs, 12–13, 79, 81, 225–226 modem installation, 13–14 wireless, 91 NLP (Normal Link Pulse), 286 noise, 149, 157 narrowband interference, 190 sources of on copper media, 198–191, 196–197 ... core, 143 duplex fiber, 141 multimode, 144 single-mode, 143, 145 IR, 136 Law of Reflection, 137–138 optical density, 136 ray model, 135–136 total internal reflection, 139 limitations of bandwidth, 61–63 ... multimode, 144 noise, 149 scattering, 150 safe handling, 912 signaling, 192–194 single-mode, 143–145 splicing, 153 components of, 147 connectors, 148 patch panels, 149 receivers, 147 repeaters, 148...

Ngày tải lên: 04/07/2014, 18:20

... through F) Remember that 10 * 10 can be written as 102(10 “squared,” or 10 raised to the second power, or 10 multiplied by itself 2 times 10 * 10 * 10 can be written as 103(ten “cubed,” A = Amplitude ... Logarithms As discussed in Chapter 1, “Introduction to Networking,” in networking, remember three important number systems: ■ Base 2 (binary) ■ Base 10 (decimal) ■ Base 16 (hexadecimal) Recall that ... of Two States (1/0, On/Off) • Voltage Jumps Between Levels chpt_04.fm Page 186 Tuesday, May 27, 2003 9:01 AM Trang 9Background for Studying Frequency-Based Cable Testing 187or 10 raised to the...

Ngày tải lên: 04/07/2014, 18:20

... Pair 1 Pair 4 1 2 3 4 5 6 7 8 T568A Pair 3 Pair 2 Pair 1 Pair 4 1 2 3 4 5 6 7 8 T568B Correct T568B Wiring Reversed-Pair Wiring Fault Split-Pair Wiring Fault Transposed-Pair Wiring Fault 1 2 3 ... difference to note is the medium used for 10-Mbps Ethernet versus 100-Mbps and 1000-Mbps Ethernet In today’s networks, in which you see a mix of 10- and 1000-Mbps requirements, you must be aware ... Trang 1Figure 4-15 Power Sum Near-End Crosstalk (PSNEXT)Some Ethernet standards, such as 10BASE-T and 100BASE-TX, receive data from only one wire pair...

Ngày tải lên: 04/07/2014, 18:20

... UTP, two pair 100 m (328 feet) Star ISO 8877 (RJ-45) 100BASE-TX EIA/TIA CAT 5 UTP, two pair 100 m (328 feet) Star ISO 8877 (RJ-45) 100BASE-FX 62.5/125 multimode fiber 400 m (1312.3 feet) Star ... Figure 4-21 shows a GBIC, and Figure 4-22 shows a Cisco WS-X2931 Gigabit Ethernet Module with the GBIC out. Figure 4-21 Gigabit Interface Converter (GBIC) Figure 4-22 Cisco WS-X2931 Gigabit ... deploy other 1000BASE-X technology without needing to change the physical interface/module on the router or switch. chpt_04.fm Page 210 Tuesday, May 27, 2003 9:01 AM Cabling the LANs 211 The fiber-optic...

Ngày tải lên: 04/07/2014, 18:20

... connec-tion from a user to a Network Terminaconnec-tion 1 (NT1) device A terminal (T) interface is the electrical interface between an NT1 device and an NT 2 device, which is usually a private ... North America, the customer typically provides the NT1; in the rest of the world, the service provider pro-vides the NT1 device If the NT1 device needs to be provided by the customer, an ISDN ... with a U interface can be used A U interface has an NT1 built in If an external NT1 device is used or if the service provider uses an NT1 device, the router needs an ISDN BRI S/T interface Because...

Ngày tải lên: 04/07/2014, 18:20

... 10BASE5 (500 m) 50 Ohm Coax N-Style 10BASE2 (185 m) 50 Ohm Coax BNC 10BASE-T 1000BASE-LX (550-5000 m) MM Fiber Sc 10BASE-TX (100 m) 100 Ohm UTP 100BASE-FX (228_412 m) MM Fiber SC 1000BASE-T 1000BASE-SX ... Switching.” 1102.book Page 253 Tuesday, May 20, 2003 2:53 PM Trang 6254 Chapter 5: Ethernet FundamentalsEthernet interfaces can range from US$10 to $100,000 Ethernet speeds can be 10, 100, 1000, or 10,000 ... Fiber optic 12. What type of connector is used for DSL connection? A. RJ-45 B. RJ-11 C. F 13. What type of connector is used to connect a router and a cable system? A. RJ-45 B. RJ-11 C. F 14. What...

Ngày tải lên: 04/07/2014, 18:20

... octets in length and is represented by the following binary pattern: 10101010 10101010 10101010 10101010 10101010 10101010 10101010 ■ Start Frame Delimiter (SFD)—This a one-octet field that marks ... (ending in pattern 10101011, the 802.3 SFD) 6 Destination MAC Address 6 Source MAC Address 2 Type Field (46 to 1500 data—if less than 46 octets, a pad must be added to the end) 46 to 1500 Data and ... is nearly identical for all speeds of Ethernet (10/100/1,000/10,000 Mbps). Half-duplex Gigabit Ethernet 1000BASE-T and the “W” versions of 10-Gb Ethernet have certain timing issues that require...

Ngày tải lên: 04/07/2014, 18:20

... following: On a 10 Mbps Ethernet, 1 bit at the MAC sublayer requires 100 nanoseconds (ns) to transmit At 100 Mbps, that same bit requires 10 ns to transmit, and at 1000 Mbps, it takes only 1 ns Table ... time for 10 and 100 Mbps Ethernet is 512 bit-times (64 octets) Slot time for 1000 Mbps Ethernet is 4096 bit-times (512 octets, including the extension) Slot time is not defined for 10 Gbps Ethernet ... Trang 1Figure 5-10 CSMA/CDNetworking devices are capable of detecting when a collision has occurred because the amplitude of the signal on the networking media increases...

Ngày tải lên: 04/07/2014, 18:20

... enable the agreed Clock Pulses Data Pulses Coded Data D0 1 D1 0 D2 0 D3 0 D4 0 D5 1 D6 1 D7 1 D8 1 D9 0 D10 0 D11 0 D12 0 D13 0 D14 0 D15 0 Trang 10configuration and attempt to link accordingly Link ... threshold is around –1.5 volts, as measured on the coax cable Figure 5-17 shows a midframe in 10BASE2/10BASE5 collision captured by a digital storage oscilloscope Figure 5-17 10BASE2/10BASE5 Local Collision ... Autonegotiation As Ethernet grew from 10 to 100 and 1000 Mbps, one goal was to make each technol-ogy interoperable, even to the point that 10, 100, and 1000 interfaces could be directly connected...

Ngày tải lên: 04/07/2014, 18:20

... 315 10 -Mbps and 10 0-Mbps Ethernet 315 10 -Mbps Versions of Ethernet 316 10 BASE5 320 10 BASE2 ... 511 WAN Characteristics 511 WAN Devices 515 WAN Standards 515 WAN Connection ... . 610 Password Recovery Technique . 611 11 02.book Page xvii Tuesday, May 20, 2003 2:53 PM xvii Summary 614 Key Terms ...

Ngày tải lên: 04/07/2014, 18:20

... educational needs of the internetworking community, Cisco Systems established the Cisco Networking Academy Program The Networking Academy is a comprehensive learning program that provides students ... the Cisco Networking Academy Program Kevin Warner Senior Director, Marketing Worldwide Education Cisco Systems, Inc 11 02.book Page xxvii Tuesday, May 20, 2003 2:53 PM xxvii Introduction Cisco Networking ... Cisco Networking Academy Program is in the forefront of this transformation This Cisco Press title is one of a series of best-selling companion titles for the Cisco Networking Academy Program...

Ngày tải lên: 04/07/2014, 18:20

... and practice 11 02.book Page Tuesday, May 20, 2003 2:53 PM 11 02.book Page Tuesday, May 20, 2003 2:53 PM Part I CCNA 1: Networking Basics Chapter Introduction to Networking Chapter Networking Fundamentals ... (see Figure 1- 1) ■ Floppy disk drive—Can read and write to floppy disks (see Figure 1- 2) ■ Hard disk drive—Reads and writes data on a hard disk The primary storage device in the computer 11 02.book ... computer 11 02.book Page Tuesday, May 20, 2003 2:53 PM Chapter 1: Introduction to Networking Figure 1- 1 Central Processing Unit Figure 1- 2 Floppy Disk Drive ■ Microprocessor—A silicon chip that contains...

Ngày tải lên: 04/07/2014, 18:20

... connected Figure 1- 5 shows a PC card adapter for a wireless local-area network (WLAN) Figure 1- 5 PC Card 11 11 02.book Page 12 Tuesday, May 20, 2003 2:53 PM 12 Chapter 1: Introduction to Networking ... 11 02.book Page 10 Tuesday, May 20, 2003 2:53 PM 10 Chapter 1: Introduction to Networking Figure 1- 4 Expansion Slot Motherboard Components NOTE Some ... Desktop systems can use a built-in or adapter card-type NIC 13 11 02.book Page 14 Tuesday, May 20, 2003 2:53 PM 14 Chapter 1: Introduction to Networking Situations that require NIC installation include...

Ngày tải lên: 04/07/2014, 18:20

... expressed as 12 hex numbers instead Every bits is a hex digit (24 = 16 ), as you will see in Table 1- 6 in a moment Instead of writing 10 1 010 10 .11 110 000 .11 0000 01. 111 00 010 . 011 1 011 1. 010 100 01 you can ... 22 21 20 Place Value 12 8 64 32 16 Example: 10 110 0 1 Example: 10 110 = (1 ∗ 24 = 16 ) + (0 ∗ 23 = 0) + (1 ∗ 22 = 4) + (1 ∗ 21 = 2) + (0 ∗ 20 = 0) = (16 + + + + 0) = 22 If the binary number (10 110 ) ... second position represents 10 1 (10 ∗ = 10 ) The third position represents 10 2 (10 ∗ 10 = 10 0) The seventh position to the left represents 10 6 (10 × 10 ∗ 10 ∗ 10 ∗ 10 ∗ 10 = 1, 000,000) This is true...

Ngày tải lên: 04/07/2014, 18:20

... dotted-decimal format, 10 .0.0.0 is the network portion of the IP address Example 2: Using the second mask (255.255.0.0): 000 010 10.0 010 0 010 .00 010 111 .10 00 011 0: IP address 11 111 111 .11 111 111 .00000000.00000000: ... Some examples of subnet masks follow Example 1: 11 111 111 .00000000.00000000.00000000 written in dotted decimal is 255.0.0.0 Example 2: 11 111 111 .11 111 111 .00000000.00000000 written in dotted decimal ... following examples: Example 1: Using the first mask (255.0.0.0): 000 010 10.0 010 0 010 .00 010 111 .10 00 011 0: IP address 11 111 111 .00000000.00000000.00000000: network mask 000 010 10.00000000.00000000.00000000...

Ngày tải lên: 04/07/2014, 18:20

... Subscriber Line (DSL) 51 110 2.book Page 52 Tuesday, May 20, 2003 2:53 PM 52 Chapter 2: Networking Fundamentals ■ Frame Relay ■ T (U.S.) and E (Europe) carrier series—T1, E1, T3, E3, and so on ■ ... communicate across great distances 11 02.book Page 51 Tuesday, May 20, 2003 2:53 PM Networking Terminology Figure 2-7 WAN Corporate Headquarters Dallas Branch Office San Francisco Branch Office Miami Using ... users are routed to an optimally located content engine 11 02.book Page 55 Tuesday, May 20, 2003 2:53 PM Networking Terminology Figure 2 -10 Data Center Content Delivery Web Hosting Services Content...

Ngày tải lên: 04/07/2014, 18:20

... 50-ohm coaxial cable 10 Mbps 18 5 m 10 Mbps 500 m 10 Mbps 10 0 m 10 0 Mbps 10 0 m 10 00 Mbps 10 0 m 10 0 Mbps 2000 m 10 00 Mbps 220 m (10 BASE2 Ethernet, Thinnet) 50-ohm coaxial cable (10 BASE5 Ethernet, ... UTP (10 BASE-T Ethernet) Category UTP (10 0BASE-TX Ethernet) Category UTP (10 00BASE-TX Ethernet) Multimode optical fiber (62.5 /12 5 µm) (10 0BASE-FX Ethernet) Multimode optical fiber (62.5 /12 5 µm) (10 00BASE-SX ... Kilobits per second kbps kbps = 10 00 bps = 10 3 bps Megabits per second Mbps Mbps = 1, 000,000 bps = 10 6 bps Gigabits per second Gbps Gbps = 1, 000,000,000 bps = 10 9 bps Bandwidth Limitations Bandwidth...

Ngày tải lên: 04/07/2014, 18:20

... layer on the destination computer, as shown in Figure 2 -17 11 02.book Page 73 Tuesday, May 20, 2003 2:53 PM Networking Models Figure 2 -17 Peer-to-Peer Communication Sender Receiver Network Application ... data-flow protocols Whereas the application, presentation, and session 71 110 2.book Page 72 Tuesday, May 20, 2003 2:53 PM 72 Chapter 2: Networking Fundamentals layers are concerned with application issues, ... to troubleshoot network problems if they occur during data packet flow 11 02.book Page 71 Tuesday, May 20, 2003 2:53 PM Networking Models OSI Layers and Functions Each OSI layer has a set of functions...

Ngày tải lên: 04/07/2014, 18:20

... uBR10 012 series, shown in Figure 2- 31, can handle thousands of subscribers 87 11 02.book Page 88 Tuesday, May 20, 2003 2:53 PM 88 Chapter 2: Networking Fundamentals Figure 2- 31 Cisco CMTS uBR10 012 ... network Figure 2-30 shows a Cisco 610 0 Series Advanced DSL Access Multiplexer 11 02.book Page 87 Tuesday, May 20, 2003 2:53 PM Networking Models Figure 2-30 Cisco DSLAM 610 0 CMTS Cable operators ... optical networking, which is primarily a backbone, wide-area technology Figure 2-32 shows a Cisco ONS 15 454 dense wavelength division multiplexing (DWDM) optical network system (ONS) The Cisco ONS 15 454...

Ngày tải lên: 04/07/2014, 18:20