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Computer Networking

Computer networks are collections of computers which are connected together in order to communicate and transfer information. Questions about computer networks, networking protocols, and how to set them up belong here.

18,810 Questions

How do I connect a wireless computer to a dial-up network?

Wireless and Dial-Up are two different methods of accomplishing the same thing. Therefore, they are basically mutually exclusive. (technically you could use them both at the same time, but in nearly every case, the dial-up would be far inferior, so there wouldn't be much point).

If you mean "wireless internet" merely as the service that you have paid for, then it's possible. It depends on the terms of your contract with your service provider. In general, it would be pretty unusual.

What are the disadvantages of green computing?

Disadvantages of Green Computing:

Costly

Underpowered

Still in experimental stages

Rapid technology change

Not readily available

Works Cited

Advantages And Disadvantages Of Green Computing. (n.d.). Retrieved 3 4, 2013, from Blogspot: http://greenc0mputing.blogspot.com/2011/12/advantages-and-disadvantages-of-green.html

Disadvantage of green computing? (n.d.). Retrieved 3 4, 2013, from Eco-Answers Wiki: http://green.answers.wikia.com/wiki/Disadvantage_of_green_computing

What is the best wirless router?

Well, this depends on the person, as for me, i think Huawei E583C is the best wireless router, this is an article about how to Select Your Best Router:

http://ailsa01.livejournal.com/3717.html

other resource, Huawei E583C:

http://www.modem3g.com/e583c-hotspot-p-57.html

Difference between L1 cache and L2 cache?

A memory cache, sometimes called a cache store or RAM cache, is a portion of memory made of high-speed static RAM (SRAM) instead of the slower and cheaper dynamic RAM (DRAM) used for main memory. Memory caching is effective because most programs access the same data or instructions over and over. By keeping as much of this information as possible in SRAM, the computer avoids accessing the slower DRAM.

Short for Level 1 cache, a memory cache built into the microprocessor.

Short for Level 2 cache, cache memory that is external to the microprocessor. In general, L2 cache memory, also called the secondary cache, resides on a separate chip from the microprocessor chip.

As more and more processors begin to include L2 cache into their architectures, Level 3 cache is now the name for the extra cache built into motherboards between the microprocessor and the main memory.

the l2 cache is now always built onto the processor for x86 archetechure

How does encoding work?

Character encoding is the way that your computer interprets and displays a file to you. There are many different systems, especially for different languages that require different characters to be displayed.

What is the maximum cable length for a 100 baseT Ethernet?

100BASE-T has a data trasnfer rate up to 100 Mbps. 100BASE-T is based on the older Ethernet standard. Its 10 times faster than Ethernet it is also called Fast Ethernet. The 100BASE-T standard is IEEE 802.3u

What do computer networks allow you to do?

Share resources including (but not limited to) printers, drive space, scanners, tape drives, drawpads, monitors and more.

What defines dividing data streams into smaller pieces suitable for transmission?

Segmentation is process of dividing data streams into smaller pieces suitable for transmission. This done so it can fit into a transmission control protocol or TCP segment so it does not violate the rules concerning the maximum data amount in a segment.

What is a programmable electronic device that can input process output and store data?

A programmable electronic device that can input process output and store data means a microcontroller which has an inbuilt ram,rom and i/o's .

A programmable electronic device that can input process output and store data means a microcontroller which has an inbuilt ram,rom and i/o's .

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although that sounds nice, the text book answer is "computer"

What would be a disadvantage of configuring a wireless router or access point to operate only in accordance with the 802.11g protocol standard?

What is one disadvantage that 802.11a wireless has compared to 802.11g?

A. Use of the 5GHz band requires much larger antennas.

(Has to be this answer, others are just wrong.)

B. The OFDM modulation technique results in a slower data rate.

802.11a = OFDM 54 Mbps 802.11g = DSSS 11 Mbps or OFDM 54 Mbps

C. There are fewer non-overlapping channels available to help reduce RF

802.11a = 8 Channels 802.11g = 3 Channels

D. The use of higher frequencies means that signals are more likely to be obstructed.

802.11a = 5 GHz 802.11g = 2.4 GHz

Other way around, the 2.4 GHz frequency band is crowded, and subject to

interference from other networking technologies such as microwave ovens,

2.4GHz cordless phones (a huge market), and bluetooth. Also the higher

the frequency the better it is at penetrating walls and scattering or

reflecting of walls and ceilings.

What are two features of a link-state routing protocol?

The link state routing process is characterized by its utilization of topological data to create an accurate representation of a network, which enables it to determine the most optimal paths for data transmission. Additionally, this process involves routers communicating with each other through link-state advertisements to share information about their connections, ensuring all routers maintain up-to-date knowledge of the network's structure.

What do the letters tcpip stand for?

TCP/IP is a very common type of network protocol.

TCP stands for Transmission Control Protocol and is used to create data connections between computers. Primarily, it is a "connection oriented protocol" in a sense that every connection goes through a three-way-handshake (SYN, ACK/SYN, ACK) to establish a connection before data is transmitted. Once the connection is established, each data packet that is received by the destination computer triggers an ACK packet (short for Acknowledge) to say that the data was received without error. That ACK packet will not be sent if the data packet is not received or if the data packet does not match the CRC (Cycle Redundancy Check). If the computer that sent the data packet does not hear that ACK packet, it sends the data packet again. The majority of traffic on the internet is TCP.

TCP can be easily compared to UDP (User Datagram Protocol) which does not create a "connection" or ask for a acknowledgment packet and therefor typically has less overhead and latency. With UDP, data is sent to an address without worry for whether or not it reached its destination successfully. It is often used for streams such as internet radio/audio or video.

IP stands for Internet Protocol. IP is the framework that lets computers address and communicate with each other. Most commonly known is an IP Address. An IP Address is a set of numbers given to a computer so that it may communicate with other computers with IP addresses. A common analogy is the phone system. To talk to someone, you simply dial their number.

For example, to submit this answer, my computer made a TCP connection to wiki.answers.com's IP address and sent a data stream containing my writings. After each packet my computer sent, wiki.answers.com sent an acknowledge packet back.

How do you get your ip address?

To see your outside or public IP address, lookup on google " my ip" and it will tell you the bold numbers. That is the IP your network uses to talk with the outside world.

To see local IP;

Depends on the OS:

Windows 98: Start > Run > type WINIPCFG

Windows XP: Start > Control Panel > Network Connections > Right Click > Properties > Internet Protocol (IP/TCP) > Properties

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Start > Run > Type 'cmd' > Press Enter> ipconfig/all > Press Enter

there is also a console command.

In windows 2000 onwards, click Start --> Run --> CMD.exe

then type "ipconfig" and hit return.

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Linux, Ubuntu, etc

Open up a root terminal

Type 'ifconfig'

That will give you the networking stats of the computer.

You can just go on your network connections page and right click on the connection that you have and click status. There you will see your IP address.

What command should you use to query a dns server?

nslookup command is used

C:\>nslookup ?

Usage:

nslookup [-opt ...] # interactive mode using default server

nslookup [-opt ...] - server # interactive mode using 'server'

nslookup [-opt ...] host # just look up 'host' using default server

nslookup [-opt ...] host server # just look up 'host' using 'server'

What are the advantages of plenum grade cable?

it is coated in a fire-reatrdant cladding and it is installed in the air-handling space used by air conditioning systemms

What happens when there is a data collision?

Data collision occurs when the sent data from a physical network unable to reach its destination due to some reason. It normally happens when two or more devices attempt to send a signal along the same transmission channel at the same time.

What are the colors of the conductors in nonmetallic sheathed cable for two wire cable?

The wire conductor colors in a non metallic sheathed cable are black, red, white, and a bare copper.

What makes you stand out from your peers?

some attributes that distinguishes you from your peers is:

(for teens)

you doing better in academically in school grade wise playing sport getting achievements.

Optical fibers are most commonly used in technology?

FIber Technology is used in many things:

i.e.

Telecom Technology

Internet Technology

Communication technology