Would you like to inspect the original subtitles? These are the user uploaded subtitles that are being translated:
1
00:00:00,450 --> 00:00:07,740
Another term to understand is speed and bandwidth speed is a measure of the data rate of a given link
2
00:00:07,920 --> 00:00:10,610
in the network in bits per second.
3
00:00:10,830 --> 00:00:15,950
As an example my home internet connection is seventy five megabits per second.
4
00:00:16,100 --> 00:00:22,370
This rate is the average number of bits that can be downloaded in one second.
5
00:00:22,530 --> 00:00:27,210
That's seventy five million bits in one second.
6
00:00:27,240 --> 00:00:30,720
Please remember that this is in bits and not in bytes.
7
00:00:30,720 --> 00:00:33,090
A byte is 8 bits.
8
00:00:33,300 --> 00:00:40,200
So be careful in some descriptions we may be talking about one megabyte which is different to one Megat
9
00:00:40,200 --> 00:00:43,130
But now what is cost.
10
00:00:43,150 --> 00:00:50,740
Cost indicates the expense for purchasing network components as well as the cost of installing and maintaining
11
00:00:50,770 --> 00:00:51,970
the network.
12
00:00:52,000 --> 00:00:58,640
Sometimes the cost of installation is very high relative to the cost of the equipment.
13
00:00:58,660 --> 00:01:00,160
What about security.
14
00:01:00,310 --> 00:01:07,840
Security indicates how well a network is protected from both inside and outside threats.
15
00:01:08,080 --> 00:01:14,950
Ettrick security is of great importance especially with the number of attacks taking place on companies
16
00:01:15,250 --> 00:01:16,890
from hackers on the Internet.
17
00:01:17,200 --> 00:01:24,340
What is availability availability is a measure of the probability that a network will be available for
18
00:01:24,340 --> 00:01:26,280
use when it is needed.
19
00:01:26,440 --> 00:01:32,740
It is often represented as a percentage of time that the network is available and is referred to as
20
00:01:32,760 --> 00:01:34,020
up time.
21
00:01:34,090 --> 00:01:41,170
It's not much good having a network if its not available when you need it to calculate the percentage
22
00:01:41,170 --> 00:01:44,050
of up time that a network has experienced.
23
00:01:44,050 --> 00:01:50,590
Divide the number of minutes that a network was available in a year by the total number of minutes in
24
00:01:50,590 --> 00:01:51,420
the year.
25
00:01:51,730 --> 00:02:00,020
So for networks uptime is meant to be 24 hours a day seven days a week 365 days a year.
26
00:02:00,310 --> 00:02:07,030
But availability is calculated by dividing the time that the network is actually available by the total
27
00:02:07,030 --> 00:02:11,970
time in a year and then multiplying by 100 to get a percentage.
28
00:02:11,980 --> 00:02:18,820
So as an example if the network is not available for 15 minutes in a year because of network outages
29
00:02:19,180 --> 00:02:26,470
you can calculate that percentage availability as follows number of minutes in a year minus a downtime
30
00:02:26,830 --> 00:02:33,400
divided by number of minutes any times 100 equals percentage availability.
31
00:02:33,400 --> 00:02:39,460
So in this example weve got five hundred twenty five thousand six hundred minutes and a year minus the
32
00:02:39,460 --> 00:02:47,680
number of minutes downtime in the year which is 15 divided by five twenty five six hundred times 100
33
00:02:48,070 --> 00:02:56,290
gives us an availability percentage of ninety nine point nine nine 7 1 percent for next term to understand
34
00:02:56,290 --> 00:03:05,770
is scalability scale Bovey indicates how easily the network can grow to accommodate more users and greater
35
00:03:05,800 --> 00:03:07,480
transmission requirements.
36
00:03:07,750 --> 00:03:16,690
If you design and optimize the network only for todays requirements it can be very expensive and difficult
37
00:03:16,930 --> 00:03:20,430
to meet new needs as the network grows.
38
00:03:20,530 --> 00:03:24,310
Networks should be designed with growth in mind.
39
00:03:24,700 --> 00:03:33,300
Don't design a network and purchase network devices without considering network scalability and growth.
40
00:03:33,610 --> 00:03:41,350
What is reliability reliability indicates the dependability of the components that make up a network
41
00:03:41,650 --> 00:03:44,920
such as routers switches PCs and servers.
42
00:03:45,010 --> 00:03:54,550
Reliability is often measured as a probability of failure or mean time before failure or so called MTBF.
4435
Can't find what you're looking for?
Get subtitles in any language from opensubtitles.com, and translate them here.
Afrikaans
Albanian
Amharic
Armenian
Azerbaijani
Basque
Belarusian
Bengali
Bosnian
Bulgarian
Catalan
Cebuano
Chichewa
Chinese (Simplified)
Chinese (Traditional)
Corsican
Croatian
Czech
Danish
Dutch
English
Esperanto
Estonian
Finnish
French
Frisian
Galician
Georgian
German
Greek
Gujarati
Haitian Creole
Hawaiian
Hungarian
Icelandic
Indonesian
Irish
Italian
Japanese
Kazakh
Khmer
Korean
Kurdish (Kurmanji)
Kyrgyz
Lao
Latvian
Lithuanian
Luxembourgish
Macedonian
Malagasy
Malay
Maltese
Maori
Mongolian
Myanmar (Burmese)
Nepali
Norwegian
Pashto
Polish
Portuguese
Romanian
Russian
Samoan
Serbian
Sesotho
Shona
Sinhala
Slovak
Slovenian
Somali
Spanish
Swahili
Swedish
Tajik
Thai
Turkish
Ukrainian
Urdu
Uzbek
Vietnamese
