|  | Company Background |
| | Helpful Information |
|
Index:
Private IPv4 Address Ranges
- 10.0.0.0 - 10.255.255.255
- 172.16.0.0 - 172.31.255.255
- 192.168.0.0 - 192.168.255.255
IPv4 Address Classes
|
Class
|
Mask
|
Num Networks
|
Num Hosts
|
Left Bits
First Octet
|
CIDR Suffix
|
|
A
|
255.0.0.0
|
2^8
|
2^24
|
0
|
/24
|
|
B
|
255.255.0.0
|
2^16
|
2^16
|
10
|
/16
|
|
C
|
255.255.255.0
|
2^24
|
2^8
|
11
|
/8
|
|
D
|
(Reserved for Multicast)
|
|
E
|
(Reserved for Future)
|
xDSL Speeds Based on Distance to Telephone Company "Central Office"
|
Type
|
Distance
(feet)
|
Distance
(meters)
|
Max Speed
|
|
SDSL
|
9,500
|
2,896
|
1.568 Mbps
|
|
SDSL
|
12,500
|
3,811
|
1.04 Mbps
|
|
SDSL
|
14,900
|
4,543
|
784 Kbps
|
|
SDSL
|
17,900
|
5,457
|
416 Kbps
|
|
SDSL
|
19,000
|
5,793
|
320 Kbps
|
|
SDSL
|
20,000
|
6,097
|
208 Kbps
|
|
SDSL
|
22,700
|
6,920
|
160 Kbps
|
|
IDSL
|
36,000
|
|
64 Kbps
|
|
IDSL
|
36,000
|
|
128 Kbps
|
|
IDSL
|
36,000
|
|
144 Kbps
|
Software Piracy
Employees can expose employers to serious legal and financial problems through software
piracy. There are some statistics:
|
40%
|
Employees bringing software from home
|
|
24%
|
Employees downloading unauthorized copies from the web
|
|
24%
|
Employees sharing programs with other employees
|
Source: Yankelovich Parters/Business Software Alliance
ISO3166 Country Codes
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