How transmission distance influence the efficiency of sender?
460846
transmission delay depend on length of the cable cause sending packet have many another packets like handshaking so if the distance is long there is big delay on the transmission of packets on the cable and u can lose it all and lose the handshaking packets or bits so u will not receive any thing at all
939675
the range fo the connection, the quality of it.
252949
It's basically one way to encapsulate data.  If you send a 1 MB transmission it is chopped into smaller bits so that it can be sent efficiently.  One way to do this is frame relay, another way is ATM.
3305
Noise happens during the encoding part of the communication process. You have the sender, to encoding, to transmission device, to decoding, to receiver, then feedback to the sender.
264481
Normally, CAT 5 Cables (Category 5 cables) should be no longer than 100m...other than that, you will have data loss and undelivered packets...\n\n=================\nUPDATE TO ANSWER:\n-----------------\nRepeaters and not that good except in certain conditions:\n\n- When using a repeater, it should be connected at a distant less than 100m...\n\n- The following segment connected to the repeater is normally 80% as good as the previous segment...\nSo, if you connect a repeater to Segment#1 (which has the streangth of 100m), segment#2 will have the strength of only 80m...\n\n- The more the repeaters, the worse the network is\nIt becomes no more of a healthy network...\n\n-----------------\n..END OF UPDATE..\n=================
142202
it basicly just jamms the freq. field by buting a content signal on it, exactly like a rido jamed used by us here in the US ARMY signal corps. by putting a constent "keyying" of the net it over rides any incomeing or outgoing signal with in its effective area (both freq spectrim and distance range) but if one is is use it is highly traceable (i know that dont make anyting easier for u but it does here in iraq.) hope i helped some, i dont know a ton on this subject just i was trained, any one with coreections to my answer i would love to know.
129471
E-mail travels in bits & bytes.Their are 8 bits to a byte and 1024 Kbytes to a meg. The time it takes to reach the desired mail server depends on the ping time, size of the e-mail and speed of the sending and receiving computer Connection speed. Ping times are measured in milliseconds. Miles per secound would not work as you can have a better ping time and a faster server 1000miles away than one 100miles away. Depending on how traveled number of Hops ect.
810841
Well it does go slow due to users on the ISP and depends on the distance from the Line Exchange. Also it depends of what broadband company your using. If you've using BT and have the Home Hub just unplug it and plug it back in and it normally speeds it up.
111583
The free space losses increases in log ratio with frequency, Since your mobile has much less power than the Base Station, using a lowe frequecy the attenuation due the distance is less in the uplink. \nYou can see the same issue in satellite communications. Earth stations uses higher frequencies than satelites.\nFSL = 20Log(F*d)+ 32.4\nF: Frequency (MHz)\nd: Distance (Km)
599814
if your ( or their) line is too slow , burn it onto cd and send via post.otherwiese , broadband should do it in an hour or so.
483901
Thats a good question!\nI know you are doing Netwrok Technology CS2004N ;)\n well,\nYou should first assume the distance between rocket comples and the lecture room, say 150 meters.\nthe we have different kinds of delays to be calculated.\nThe first one is, transmission delay:\n total sie of data = * number of slides * 8(bits)\nthis would be: 10 * 1000 * 50 = 4MB\n\nNow we know the average data transmission rate, which is 1 Mbps.\n\nTransmission delay would be:\n4MB / 1 Mpbs = 4seconds\n\nNow propagation Delay would be:\nDistanse / Speed of Sound\nwhich would be 150/343 = 0.43 seconds\n\nProccessing Delay:\n50 * 10 * 1ms = 500 milli seconds = 0.5 seconds\n\nTotal Delay = 0.5 + 0.43 + 4 = 4.93 Seconds\nThis would give you the delay, BUT remeber this is using UDP, NOT TCP, if you want to have TCP you need 2 more delays, Ack Delay and Handshake Delay.(I think its ok to use UDP) If you want to use TCP ACK delay equals to propagation delay, and handshake delay is 2 * propagation delay.\nGood Luck \nMRB
85477
It could be that fewer cities are sorting mail and have to travel further to a hub.  My intown mail goes to the next city (35 miles away) and then comes back to be delivered.  My hometown used to have a sorting station and now sends it 45 miles away.  It also could be that less people are using the post office, so the post office is hiring less carriers to compensate.
87895
The 2.4 Ghz is the frequency the wireless devices talk on, not their speed.\n\nNo internet connection (that is relatively inexpensive) is going to move 2.4 Gb per second (where talking multiple T3/4 lines)..
457823
First there is no minimum distance, I can stand right in the exchange next to the switch and have a perfectly functioning telephone.  Maximum distance depends on a number of factors such as the quality of the cable connecting you to the PSTN switch and the type of telephone you use (analog or digital).  Analog telephones should work assuming decent cable and sufficient amplifiers in the system at distances of 20 miles from the PSTN switch.  However some of the new features such as call display will not work at these distances.  In most systems digital telephones will not work at distances greater that 3 or 4 miles from the main switch. Due to the variables mentioned above and others such as the  specific equipment being used or the prescence of repeaters in the path these are ballpark numbers only.  The acid test for a particular situation is to connect a phone and find out whether it operates or needs additional equipment to function.  The final answer is that a phone can be made to work at any distance from the Central office given enough money and specialized additional equipment.
929878
5.5 will be your max.\n\nThe speed depends on how far away from your exchange you live. I live a long way from mine too, I get about 2.5mb on an 8mb bandwidth.\n\nOh well.
982314
The router manufacturers will tell you they broadcast several hundred feet--but in reality (through walls and floors) don't expect more than 50 feet.  I had my best luck using a USB receiver on a pc (you can extend the usb connection about 20 feet before you lose signal through the cable.  (USB also lets you change computers quickly.)  If you extend your antenna wire (for your PCI card or on your router)--I was assured that you could add up to 100 feet of antenna cable (for a slight loss.)\n\nYou will find that experimentation with your particular system will yield your best results.
131118
Frequency hopping consists in changing the frequency\nused for transmission at regular intervals. It has been introduced in GSM mainly in order to deal with two specific problems which affect the tranqmission quality:\nRayleigh fading: The radio signals are subject to fading,\nwhich is approximately Rayleigh distributed. For a slow\nmobile, a fading dip may cause a severe information\nloss. Frequency hopping will spread sequential information\nin the frequency domain. Since the Rayleigh fading\nis frequency selective, frequency hopping will cause frequent changes of the fading, thus reducing the risk of\nlosing sequential information. Introducing this frequency\ndivers& will, together with the interleaving and coding,\nimprove the transmission link quality, for slow mobiles\nin particular.\nIntegerence: Without frequency hopping, strong signals\nfrom neighbor cells transmitting on or close to a carrier\nfrequency will affect the carrier signal continuously,\nwhich may negatively affect the transmission performance.\nFrequency hopping will cause different signals to\ninterfere with the carrier at different times, a property\ncalled interference diversi9. On system level, the result\nis a “smearing” of the interference between users, an\neffect often called inteference averaging. Furthermore,\ninterference diversity gives a second effect, which is\nemphasized in this paper. Since sequential bursts of\ninformation are received under different interference\nconditions, the risk of a sequential information loss is\nreduced. This, together with the interleaving and coding,\nwill improve the transmission link quality.