ccna 1 and 2 companion guide revised cisco networking academy program

... the ability to measure resistance and continuity with the multimeter. 6V Lantern + 6V Lantern + 1102.book Page 121 Tuesday, May 20, 2003 2:53 PM 122 Chapter 3: Networking Media The top of Figure ... longer distances. A wire with an AWG size of 24 would be 1/24th of an inch in diameter. 1102.book Page 123 Tuesday, May 20, 2003 2:53 PM 124 Chapter 3: Networking Media Twisted-Pair Cable Twisted-pair ... shielding and a larger center conductor of 18 AWG. RG-11 cable is heavier still with a center conductor of 14 AWG and is used to bring cable into neighborhoods. 1102.book Page 128 Tuesday, May 20, 2003

Ngày tải lên: 04/07/2014, 18:20

... (Token Ring LANs) ■ 100 ohm UTP 4-pair cable (Ethernet LANs) ■ 62.5/125 µ fiber-optic cable (Ethernet LANs) 1102.book Page 131 Tuesday, May 20, 2003 2:53 PM 132 Chapter 3: Networking Media ■ Coaxial ... Figure 3-12 Coaxial Cable—Thinnet 1102.book Page 129 Tuesday, May 20, 2003 2:53 PM 130 Chapter 3: Networking Media However, in both types of coaxial cable, the outer conductor must be carefully and ... TIA-568-A standards. You also test the cable for good connec- tions (continuity) and correct pinouts (correct wire on the right pin). 1102.book Page 132 Tuesday, May 20, 2003 2:53 PM Optical Media 133

Ngày tải lên: 04/07/2014, 18:20

... Figure 3-21 Figure 3-21 Light Wave Path Numerical Aperture Axis n1 n1 NA = Sin 0 = n 2 Ðn1 Where: n 1 is cladding index n 2 is core index n2 0 n0 n1 Light must fall inside this angle to be guided ... of fiber and inserted into the fiber-optic ports of switches and routers Be very careful! Multimode 100/140 Microns Multimode 62.5/125 Microns Multimode 50/125 Microns Single-Mode 10/125 Microns ... illustrated in Figure 3-20 ■ The paths (called the modes) that a light ray can follow when traveling down a fiber Figure 3-20 Numerical Aperture Controlling conditions 1 and 2 creates a fiber with

Ngày tải lên: 04/07/2014, 18:20

... expand and contract at different rates. This expansion and con- traction causes the fiber to be squeezed or stretched, which causes microbending. 1102.book Page 151 Tuesday, May 20, 2003 2:53 ... Noise, speed, and distance are all interrelated. 1102.book Page 157 Tuesday, May 20, 2003 2:53 PM 158 Chapter 3: Networking Media ■ 5 GHz—Recently, the FCC opened up the 5-GHz band for unlicensed ... devices. Cisco has acquired 5-GHz technology and uses this frequency in new products, such as Cisco Aironet 1200 series, which is dual band, delivering support for both 2.4 GHz (802.11b) and 5

Ngày tải lên: 04/07/2014, 18:20

... data and longer-range access Figure 3-44 Direct-Sequence Spread Spectrum Time 5 4 3 2 1 Hopping Pattern: C A D B E Freq. (GHz) B A E D C Time Frequency(GHz) 1 5 4 3 2.41 2.42 2.43 2.44 11 0 0 11 ... 2.41 2.42 2.43 2.44 11 0 0 11 0 0 1 0 0 Chipping Sequence 1 Number Sent Interference 1 1 0 1 1 0 0 1 0 11 0 0 1 1 0 1 0 1 Number Received Trang 3Limited to a 2-Mbps data-transfer rate, FHSS is ... create a standard that matched the manufacturer’s solution IEEE 802.11b, called Wi-Fi or high-speed wireless, refers to DSSS systems that operate at 1, 2, 5.5, and 11 Mbps All 802.11b systems

Ngày tải lên: 04/07/2014, 18:20

... communications ■ Wireless standards include IEEE 802.11, IEEE 802.11a, IEEE 802.11b, and IEEE 802.11g ■ Wired equivalent privacy (WEP) is a security mechanism, defined within the 802.11 standard, that is ... (neutral) 3) Electrons C) Particles that have a positive charge A. 1-C, 2-B, 3-A B. 1-A, 2-C, 3-B C. 1-B, 2-C, 3-A D. 1-B, 2-A, 3-C 2. Which of the following regarding electricity is untrue? A. Opposite ... A. 1-C, 2-B, 3-A B. 1-B, 2-C, 3-A C. 1-A, 2-C, 3-B D. 1-C, 2-B, 3-A A. Open; voltage B. Closed; voltage C. Open; circuits D. Closed, circuits 5. What is the maximum cable length for STP? A. 100

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 ... Understand what signals and noise impact networking media ■ Properly cable a LAN ■ Properly cable a WAN chpt_04.fm Page 182 Tuesday, May 27, 2003 9:01 AM Trang 5Chapter 4Cable Testing and Cabling ... the original power measured in watts chpt_04.fm Page 187 Tuesday, May 27, 2003 9:01 AM Trang 10188 Chapter 4: Cable Testing and Cabling LANs and WANs■ Vfinalis the delivered voltage measured in

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 ... New Cabling Standard On June 20, 2002, the Category 6 (CAT 6) addition to the TIA-568 standard was pub-lished The official title of the standard is ANSI/TIA/EIA-568-B.2-1 This new standard specifies ... demonstrated in Figure 4-17 Figure 4-17 Cable Wire Map Problems Pair 2 Pinouts 1 = G/W 2 = Green 3 = O/W 4 = Blue 5 = Blue/W 6 = Orange 7 = Brown/W 8 = Brown Pinouts 1 = O/W 2 = Orange 3 = G/W 4

Ngày tải lên: 04/07/2014, 18:20

... 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 Ethernet Module with ... distance (1000BASE-ZX) Typically, the GBIC is used as an interface between the Ethernet and fiber-optic systems, such as Fiber Channel and Gigabit Ethernet Figure 4-21 shows a GBIC, and Figure 4-22 shows ... (1804.5 feet) for 50 micro fiber 62.5/50 micro multimode fiber; 9-micron single- mode fiber 440 m (1443.6 feet) for 62.5 micro fiber; 550 m (1804.5 feet) for 50 micro fiber; 3 to 10 km (1.86 to 6.2

Ngày tải lên: 04/07/2014, 18:20

... of intrusion into an existing network. chpt_04.fm Page 221 Tuesday, May 27, 2003 9:01 AM 222 Chapter 4: Cable Testing and Cabling LANs and WANs Today, in data communications, all switching equipment ... variety and prices of network compo- nents out in the market. This lab looks specifically at Ethernet switches and NICs. chpt_04.fm Page 222 Tuesday, May 27, 2003 9:01 AM LAN Connection Devices 223 ... eavesdroppers and thus increases vulnerability. The radio waves of wireless bridges are chpt_04.fm Page 223 Tuesday, May 27, 2003 9:01 AM 224 Chapter 4: Cable Testing and Cabling LANs and WANs concentrated

Ngày tải lên: 04/07/2014, 18:20

... the bandwidth. Another way to express bandwidth is to specify the amount of data in bits per second that the serial channel can carry Table 4-6 compares physical standards for EIA/TIA-232 and ... Comparison of Physical Standards Data (bps) Distance (Meters) EIA/TIA-232 Distance (Meters) EIA/TIA-449, V.35, X.21, EIA-530 Trang 6Figure 4-44 WAN Serial Connection OptionsRouters and Serial Connections ... 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 branch exchange

Ngày tải lên: 04/07/2014, 18:20

... (e.g., 103 = 10 * 10 * 10 = 1000) ■ Logarithms are similar to exponents A logarithm to the base of 10 of a number equals the exponent to which 10 has to be raised to equal the number (e.g., log10 1000 ... follows: 1 to 8 2 to 7 3 to 6 4 to 5 5 to 4 6 to 3 7 to 2 8 to 1 To set up a connection between your terminal and the Cisco console port, you must perform the following steps: Step 1 Cable the ... complete cycles per second IEEE 802.1X/Extensible Authentication Protocol (EAP) An alternative WLAN security approach to WEP as specified by IEEE 802.11 IEEE 802.1X/EAP focuses on developing a framework

Ngày tải lên: 04/07/2014, 18:20

... 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 (220-550 m) MM Fiber SC 10BASE-(V 1102.book Page 257 ... be 10, 100, 1000, or 10,000 Mbps This section explores more details of original Ethernet (10BASE-T), Fast Ethernet (100BASE-TX and 100BASE-FX), Gigabit Ethernet (1000BASE-T and 1000BASE-X), and ... Tech-nologies and Ethernet 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

Ngày tải lên: 04/07/2014, 18:20

... NICs, 22 5 22 6 data centers, 54–55 Ethernet 10 -Gbps, 347–353 10 -Mbps, 317 , 320 10 BASE2, 3 21 322 10 BASE5, 320 –3 21 10BASE-T, 322 – 323 , 325 – 326 , 328 10 0-Mbps, 328 – 329 10 0BASE-FX, 3 32 334 10 0BASE-T, 329 –3 32 ... 11 02. book Page 10 63 Tuesday, May 20 , 20 03 2: 53 PM Layer 10 63 bridges, 82 cabling, 20 5 20 6 comparing with WANs, 511 connection devices bridges, 21 8 – 21 9 hubs, 21 7 repeater, 21 6 switches, 2 21 22 2 ... transmission, 2 71, 28 9 timing, 27 3 handshaking, 4 81 hard disk drives, hardware components of LANs bridges, 21 8 – 21 9 hubs, 21 7 repeaters, 21 6 switches, 2 21 22 2 Hyperterminal session establishment on Cisco...

Ngày tải lên: 04/07/2014, 18:20

... Wednesday, May 21 , 20 03 11 : 31 AM ii Cisco Networking Academy Program CCNA and Companion Guide Third Edition Cisco Systems, Inc Cisco Networking Academy Program Copyright © 20 03 Cisco Systems, ... with a Cisco trained and authorized Networking Academy provider For information on the Cisco Networking Academy Program or to locate a Networking Academy, please visit www .cisco. com/edu 11 02. book ... mark Warning and Disclaimer This book is designed to provide information about CCNA 1: Networking Basics and CCNA 2: Routers and Routing Basics of the Cisco Networking Academy Program CCNA course...

Ngày tải lên: 04/07/2014, 18:20

... 11 02. book Page xii Tuesday, May 20 , 20 03 2: 53 PM xii Ethernet Timing 27 2 Interframe Spacing and Backoff 27 5 Error Handling ... 320 10 BASE2 3 21 10BASE-T 322 10 BASE-T Architecture 326 10 0BASE-TX ... 417 Summary 419 11 02. book Page xiv Tuesday, May 20 , 20 03 2: 53 PM xiv Key Terms 4 21 Review Questions...

Ngày tải lên: 04/07/2014, 18:20

... Systems, Inc 11 02. book Page xxvii Tuesday, May 20 , 20 03 2: 53 PM xxvii Introduction Cisco Networking Academy Program CCNA and Companion Guide, Third Edition, supplements your classroom and laboratory ... books for the Networking Academy by Cisco Systems, and provide print and CD-ROM materials that ensure the greatest possible learning experience for Networking Academy students 11 02. book Page xxvi ... 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 Designed by Cisco...

Ngày tải lên: 04/07/2014, 18:20

... understand routing and switching, and make the connection between theory and practice 11 02. book Page Tuesday, May 20 , 20 03 2: 53 PM 11 02. book Page Tuesday, May 20 , 20 03 2: 53 PM Part I CCNA 1: Networking ... Information and activities not found online 11 02. book Page xxxiii Tuesday, May 20 , 20 03 2: 53 PM xxxiii ■ Accurate and concise feedback on practice exam questions ■ Learner-directed practice and study ... Chapter TCP/IP Protocol Suite and IP Addressing Chapter Routing Fundamentals and Subnets Chapter TCP/IP Transport and Application Layer 11 02. book Page Tuesday, May 20 , 20 03 2: 53 PM Objectives Upon...

Ngày tải lên: 04/07/2014, 18:20

... contains the success ratio and round-trip time to the destination From this information, you can 15 11 02. book Page 16 Tuesday, May 20 , 20 03 2: 53 PM 16 Chapter 1: Introduction to Networking determine ... Desktop systems can use a built-in or adapter card-type NIC 13 11 02. book Page 14 Tuesday, May 20 , 20 03 2: 53 PM 14 Chapter 1: Introduction to Networking Situations that require NIC installation include ... 11 02. book Page 10 Tuesday, May 20 , 20 03 2: 53 PM 10 Chapter 1: Introduction to Networking Figure 1- 4 Expansion Slot Motherboard Components NOTE Some...

Ngày tải lên: 04/07/2014, 18:20

... Exponent 27 26 25 24 23 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 ... 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 ... 65536 25 6 16 Example: 1A2C A C Example: 1A2C = (1 ∗ 16 3 = 65536) + (10 (A) ∗ 16 2 = 25 60) + (2 ∗ 16 1 = 32) + ( 12 (C) ∗ 16 0 = 12 ) = (65536 + 25 60 + 32 + 12 ) = 6 814 4 Decimal-to-Binary Conversion You...

Ngày tải lên: 04/07/2014, 18:20