Course课程介绍.ppt

work Implementation
Course Introduce
主讲:李华成1、IE R&S 2、IE VOICE;
3、IE SP;4、SI;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@
QQ:360169308
Email:tydeus@
Phone:**********
Cisco Certifications
Cisco Certifications: Design
CCAr
Prerequisite Learner Skills and Knowledge
ponents
Network Cabling
LAN Topologies and Technologies
WAN Topologies and Technologies
Remote Access Technologies
OSI Reference Model
TCP/IP Protocols and Applications
IP Addressing
Cisco workAssociate 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 essive division by 2
Write the binary number in order of the last bit first: 11111101
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