Course课程介绍.pptVIP

? 2007 Cisco Systems, Inc. All rights reserved. ICND2 v1.0—1-* ? 2007 Cisco Systems, Inc. All rights reserved. ICND2 v1.0—1-* Small Network Implementation Course Introduce 主讲：李华成1、思科认证CCIE RS 2、思科认证CCIE VOICE； 3、思科认证CCIE SP；4、思科认证系统讲师CCSI；5、微软认证系统工程师MCSE20006、微软认证数据库管理员MCDBA2000 Introduce yourself Intruduce Yourself MSN:tydeus@126.com QQ：360169308 Email：tydeus@126.com Phone Cisco Certifications Cisco Certifications: Design CCAr Cisco Certifications Prerequisite Learner Skills and Knowledge Network Components Network Cabling LAN Topologies and Technologies WAN Topologies and Technologies Remote Access Technologies OSI Reference Model TCP/IP Protocols and Applications IP Addressing Cisco Certified NetworkAssociate Basics (CCNAB) Units of Information Units Bytes Bits 8 bits megabyte (MB) 8 million bits 1 million bytes kilobyte (KB) 1000 bytes 8 billion bits 1 billion bytes bit (b) 1 bit — byte (B) 1 byte 8000 bits gigabyte (GB) Decimal-to-Binary Conversion (r = remainder) 253/2 = 126 r 1 126/2 = 63 r 0 63/2 = 31 r 1 31/2 = 15 r 1 15/2 = 7 r 1 7/2 = 3 r 1 3/2 = 1 r 1 1/2 = 0 r 1 Converting a decimal number (253) to binary by successive division by 2 Write the binary number in order of the last bit first: Base 2 Numbering System Symbols Place Value Base Exponent Example: Convert decimal 35 to binary Number of Symbols 2 2 2 2 2 2 2 2 0, 1 0, 1 0, 1 0, 1 0, 1 0, 1 0, 1 0, 1 27 22 25 26 24 23 21 20 128 4 32 64 16 8 2 1 0 0 1 0 0 0 1 1 Binary-to-Decimal Conversion Convert the binary numberto a decimal number (Binary bits have decimal values) Decimal Position Value 128 64 32 16 8 4 2 1 1 or 0 1 1 1 1 1 1 0 1 128*1 + 64*1 + 32*1 + 16*1 + 8*1 + 4*1 + 2*0 + 1*1 128 + 64 + 32 + 16 + 8 + 4 + 0 + 1 = 253 Base 2 Number System Symb