Computer Networking

Supporters of technology say that it solves problems and makes life better. Opponents argue that technology creates new problems that may threaten or damage the quality of life. There are several viewpoints on the implications of technological change and advancement and such schools of thought which considerably vary have their respective validity. Technological change has its advantages and disadvantages. For one, it is true that it partly solves problems and makes life better. At the same time, technological changes may likely create new problems thereby threatening or damaging quality of life. In the developing economies, for instance, technological advantages have both its merits and demerits. The introduction and seeming acceptability and usefulness of computers have somehow helped increase the efficiency of several firms. It is not only in the industrial sector that technological change proven to be very effective. In the agricultural sector, for example, the introduction of new technologies in increasing production has been very effective in expanding agricultural produce. These are just a few examples to illustrate the advantages of technological advancement. On the other hand, countries should be more careful on their choice of technology since it must be noted that while certain types of technology are adaptable to developed economies the same type of technology may not fit the environment of developing countries due to differing economic, social, cultural, and political factors. For example, infrastructure improvements such as a construction of irrigation dam in the mountain of the Philippines where several natives reside may likely be resisted by the population due to cultural factors. They may prefer not to have such improvements in view of traditional values. Another example is the pollution impact of some technological improvements particularly in the industrial sectors. The choice and adaptability of new technology should therefore be carefully studied. The short, medium, and long term impact of such technology is very important particularly for developing economies. The benefits should always be greater than the costs. I am inclined to support both positions because both views have their own validity. However, I am more convinced that technological advancement is really beneficial to countries so long as they are aware of the disadvantages of such technology. In my own points of view, I support technology can solve problems and makes life better. Computer helps human solves thousands of problems, especially, science. A lot of calculation was so complex. It is impossible count them from normal method. It should use a very fast computer in order to compute it. Super conductor, one of the hot technology topic. A lot of scientists study this kind of stuff. It is a very important stuff. That is wonderful. We can easily solve the big problem, "energy". It can pass through the energy without losing. Finally, I support technology. Because it is more benefit.

Efficiency bandwith

onebit sliding window protocol

goback N

selective repeat

flow control

low overhead

connectionless

connection-oriented

sequence and acknowledgements

"what is different e-mial and web mail?"

With regular e-mail, the message sits on a server waiting for you to open your e-mail program (Outlook, Eudora, Thunderbird). When you open the program (or use the 'check for e-mail' function, the waiting messages are downloaded to your computer. There are setups that leave messages on the server, but this is not typical. The disadvantage of downloading your e-mail is that you can no longer access the messages anywhere else (your work, friend's house....). The advantage to downloading messages is you can archive them.

Web mail offers a huge advantage. The messages are not downloaded to your computer, they are kept on a server. This allows them to be accessed from anywhere. All you need is a web browser and a connection to the net. The down side is archiving. Many web mail providers don't allow for tons of storage (Gmail changed that trend for some people - now others are following suit).

Your Internet provider (not Hotmail, etc.) is probably set up to let you access e-mail via web mail as well. Not only can I use Outlook to access my messages (and thereby download them to my PC), but I can access any messages that weren't viewed yet by visiting a specific web address (I must know my username and password).

I have been using web mail to access my regular e-mail account for a long time now, because it allows me to view messages from different locations. I stopped using e-mail programs because I want my messages left on the server instead of getting downloaded. Not using e-mail programs also solves many security-related issues.

You should always first consider your long term objective and risk tolerance when determining the time frame of your investment goals. Understanding if you are conservative or a gambler will determine how much and which investments to consider.

The ports are available to see on the front and back of your computer. For instance the RJ45 port is the port that you plug in the cable to get to the Internet. If you want to see where the ports are located on the inside, just open your case and you will see them along the back of your computer. For instance, your keyboard is connected to a input port.

peer love is love you feel for ur barkadas, friends bestfriends....

There are lot of concerns that cause network delays, The Administrator / Network Enginrer must check the following simple tasks before he / she proceed.

 get the user(s) to demonstrate the problem.

 determine how many other users are affected.

 ensure desktop hardware and configuration is OK.

 trace all connections (they may be on another subnet).

 commence some monitoring or diagnostics.

 determine problem (if there is one).

 check for the virus / spyware activity.

 If everything seems OK, then try to restart the router / switch, same time try to restart the system.

A coder can accept any kind of analog signal while demodulator can only accept a modulated sine wave. Then they generate the digital signal.

Break the wire down into smaller segments and put a few repeaters on it. Put one at every 250ft interval. According to the 'manual', you only need one every 300ft but I find 300ft can be a bit pushy. At least with the 250ft if you ever have problems, your not going to be suspicious of the wire being too long and can save you alot of bother whilst troubleshooting later on.

Ethernet Cables are cables with 4 or eight conductors that connect to an RJ45 connector on both ends. They come in a variety of colors and must be no longer than 100 Meters.

10BaseT and 100BaseT use pins 1,2,3 & 6 GigE uses all 8 wires. Generally all current Ethernet cables come with all 8 wires now.

MAC

We will get with RRAS the ability to create a fully functional router with our windows

2000 server.

We will get quite a bit of Remote connectivity functionality. It also can support clients dialing in through phone lines, or through the internet through a virtual private network

ping is the easiest.

destination (physical/hardware address)

Source (physical/hardware address)

Start flag (start of message indicator)

Recipient

sender

encapsulated data

end of frame

they e made up of glass which is strewn to around the same thickness as a hair fibre (strand of hair)

types of multiplexers?

AppleTalk

RIP VERSIONV1 can be seen to exclude subnet information from routing updates, this is because ripv1 is a classful routing protocol and does not support VSLM, this was corrected in RIPv2 where ripv2 does send out subnet mask's in the form of a prefix eg /24 which is the subnet mask of 255.255.255.0 or a class c address.

== == Dynamic IP addresses are most frequently assigned on LANs and broadband networks by Dynamic Host Configuration Protocol (DHCP) servers. They are used because it avoids the administrative burden of assigning specific static addresses to each device on a network. It also allows many devices to share limited address space on a network if only some of them will be online at a particular time. In most current desktop operating systems, dynamic IP configuration is enabled by default so that a user does not need to manually enter any settings to connect to a network with a DHCP server. DHCP is not the only technology used to assigning dynamic IP addresses. Dialup and some broadband networks use dynamic address features of the Point-to-Point Protocol. source: http://en.wikipedia.org/wiki/IP_address

D (Delta channel) carries control and signaling traffic. B (Bearer channel) carries the actual data and/or voice traffic. A U.S. PRI consists of 23 Bearer channels and 1 Delta channel for a total of 24 channels per PRI.

A Router.

No, it does not.

what are the ethernet frame parts The source and destination MAC addresses