cisco networking academy program ccna semester 1

... card), 10 NICs, 12 ? ?13 , 79, 81, 225–226 modem installation, 13 ? ?14 wireless, 91 NLP (Normal Link Pulse), 286 noise, 14 9, 15 7 narrowband interference, 19 0 sources of on copper media, 19 8? ?19 1, 19 6? ?19 7 ... core, 14 3 duplex fiber, 14 1 multimode, 14 4 single-mode, 14 3, 14 5 IR, 13 6 Law of Reflection, 13 7? ?13 8 optical density, 13 6 ray model, 13 5? ?13 6 total internal reflection, 13 9 limitations of bandwidth, 61? ??63 ... multimode, 14 4 noise, 14 9 scattering, 15 0 safe handling, 912 signaling, 19 2? ?19 4 single-mode, 14 3? ?14 5 splicing, 15 3 components of, 14 7 connectors, 14 8 patch panels, 14 9 receivers, 14 7 repeaters, 14 8...

Ngày tải lên: 04/07/2014, 18:20

... Cisco Networking Academy Program CCNA 1 and 2 Companion Guide Third Edition Cisco Systems, Inc. Cisco Networking Academy Program Cisco Press 2 01 West 10 3 rd Street Indianapolis, ... www.ciscopress.com 11 02.book Page i Tuesday, May 20, 2003 2:53 PM ii Cisco Networking Academy Program CCNA 1 and 2 Companion Guide Third Edition Cisco Systems, Inc. Cisco Networking Academy Program ... Academy program, then you are not preparing with a Cisco trained and authorized Networking Academy provider. For information on the Cisco Networking Academy Program or to locate a Networking Academy, ...

Ngày tải lên: 04/07/2014, 18:20

... Wireless standards include IEEE 802 .11 , IEEE 802 .11 a, IEEE 802 .11 b, and IEEE 802 .11 g. ■ Wired equivalent privacy (WEP) is a security mechanism, defined within the 802 .11 standard, that is designed ... that is WEP-encrypted without the possession of the WEP key 11 02.book Page 17 0 Tuesday, May 20, 2003 2:53 PM Wireless Networking 17 1 WEP uses the RC4 stream cipher that was invented by Ron Rivest ... to connect, send, and receive data over the wireless network. 11 02.book Page 17 1 Tuesday, May 20, 2003 2:53 PM 17 2 Chapter 3: Networking Media ■ Encryption—Provides encryption services, further...

Ngày tải lên: 04/07/2014, 18:20

... through F). Remember that 10 * 10 can be written as 10 2 (10 “squared,” or 10 raised to the second power, or 10 multiplied by itself 2 times. 10 * 10 * 10 can be written as 10 3 (ten “cubed,” A = ... do not possess the appropriate WEP key. D. None of the above. 11 02.book Page 18 0 Tuesday, May 20, 2003 2:53 PM 11 02.book Page 18 1 Tuesday, May 20, 2003 2:53 PM Objectives Upon completion of this ... ref is the original power measured in watts. y = 10 x y = 10 x x: 2 x: 3 y: 10 0 y: 10 00 chpt_04.fm Page 18 7 Tuesday, May 27, 2003 9: 01 AM 18 8 Chapter 4: Cable Testing and Cabling LANs and...

Ngày tải lên: 04/07/2014, 18:20

... Brown Pair 3 Pair 1 Pair 4 12 345678 T568A Pair 3 Pair 2 Pair 1 Pair 4 12 345678 T568B chpt_04.fm Page 200 Tuesday, May 27, 2003 9: 01 AM Signals and Noise on Networking Media 2 01 A split-pair wiring ... Signals and Noise on Networking Media 19 9 Figure 4 -15 Power Sum Near-End Crosstalk (PSNEXT) Some Ethernet standards, such as 10 BASE-T and 10 0BASE-TX, receive data from only one ... difference to note is the medium used for 10 -Mbps Ethernet versus 10 0-Mbps and 10 00-Mbps Ethernet. In today’s networks, in which you see a mix of 10 - and 10 00-Mbps requirements, you must be aware...

Ngày tải lên: 04/07/2014, 18:20

... UTP, two pair 10 0 m (328 feet) Star ISO 8877 (RJ-45) 10 0BASE-TX EIA/TIA CAT 5 UTP, two pair 10 0 m (328 feet) Star ISO 8877 (RJ-45) 10 0BASE-FX 62.5 /12 5 multimode fiber 400 m (13 12.3 feet) Star ... Figure 4- 21 shows a GBIC, and Figure 4-22 shows a Cisco WS-X29 31 Gigabit Ethernet Module with the GBIC out. Figure 4- 21 Gigabit Interface Converter (GBIC) Figure 4-22 Cisco WS-X29 31 Gigabit ... deploy other 10 00BASE-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

... EIA/TIA-449, V.35, X. 21, EIA-530 2400 60 12 50 4800 30 625 9600 15 312 19 ,200 15 15 6 38,400 15 78 11 5,200 3.7 — T1 (1. 544 Mbps) — 15 chpt_04.fm Page 233 Tuesday, May 27, 2003 9: 01 AM 234 Chapter 4: ... wire connec- tion from a user to a Network Termination 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...

Ngày tải lên: 04/07/2014, 18:20

... Physical Medium 10 BASE5 (500 m) 50 Ohm Coax N-Style 10 00BASE-LX (550-5000 m) MM Fiber Sc 10 BASE2 (18 5 m) 50 Ohm Coax BNC 10 BASE-T (10 0 m) 10 0 Ohm UTP RJ45 10 BASE-TX (10 0 m) 10 0 Ohm UTP RJ45 10 0BASE-FX ... Switching.” 11 02.book Page 253 Tuesday, May 20, 2003 2:53 PM 254 Chapter 5: Ethernet Fundamentals Ethernet interfaces can range from US $10 to $10 0,000. Ethernet speeds can be 10 , 10 0, 10 00, or 10 ,000 ... 10 0 Ohm UTP RJ45 10 0BASE-FX (228_ 412 m) MM Fiber SC 10 00BASE-T (10 0 m) 10 0 Ohm UTP RJ45 10 00BASE-SX (220-550 m) MM Fiber SC 10 BASE-(Various) MM or Sm Fiber SC 11 02.book Page 257 Tuesday, May 20,...

Ngày tải lên: 04/07/2014, 18:20

... octets in length and is represented by the following binary pattern: 10 1 010 10 10 1 010 10 10 1 010 10 10 1 010 10 10 1 010 10 10 1 010 10 10 1 010 10 ■ Start Frame Delimiter (SFD)—This a one-octet field that marks ... (ending in pattern 10 1 010 11, the 802.3 SFD) 6 Destination MAC Address 6 Source MAC Address 2 Type Field (46 to 15 00 data—if less than 46 octets, a pad must be added to the end) 46 to 15 00 Data and ... is nearly identical for all speeds of Ethernet (10 /10 0 /1, 000 /10 ,000 Mbps). Half-duplex Gigabit Ethernet 10 00BASE-T and the “W” versions of 10 -Gb Ethernet have certain timing issues that require...

Ngày tải lên: 04/07/2014, 18:20

... half-duplex Ethernet links Time Interval 10 Mbps 512 bit-times 51. 2 µsec 10 0 Mbps 512 bit-times 5 .12 µsec 1 Gbps 4096 bit-times 4.096 µsec 10 Gbps Not applicable — 11 02.book Page 275 Tuesday, May 20, ... first 10 0 meters of UTP cable. It is easy to see why half duplex was not permitted in 10 -Gb Ethernet. Table 5-4 Bit-Time Ethernet Speed Bit-Time 10 Mbps 10 0 nanosecond 10 0 Mbps 10 nanosecond 10 00 ... Bit-Time 10 Mbps 10 0 nanosecond 10 0 Mbps 10 nanosecond 10 00 Mbps = 1 Gbps 1 nanosecond 10 ,000 Mbps = 10 Gbps .1 nanosecond 11 02.book Page 274 Tuesday, May 20, 2003 2:53 PM Ethernet Operation...

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