Recent questions tagged lan-technologies

Which multiple access technique is used by $\text{IEEE} \; 802.11$ standard for wireless $\text{LAN} \; ?$$\text{CDMA}$$\text{CSMA/CA}$$\text{ALOHA}$$\text{CSMA/CD}$

Suppose that an 11-Mbps 802.11b LAN is transmitting 64-byte frames back-to-backover a radio channel with a bit error rate of 10−7. How many frames per second willbe damag...

How many frames per second can gigabit Ethernet handle? Think carefully and takeinto account all the relevant cases. Hint: the fact that it is gigabit Ethernet matters.

Some books quote the maximum size of an Ethernet frame as 1522 bytes instead of1500 bytes. Are they wrong? Explain your answer.

Consider five wireless stations, A, B, C, D, and E. Station A can communicate with allother stations. B can communicate with A, C and E. C can communicate with A, B andD....

How long does a station, s, have to wait in the worst case before it can start transmittingits frame over a LAN that uses the basic bit-map protocol?

What is the length of a contention slot in CSMA/CD for (a) a 2-km twin-lead cable(signal propagation speed is 82% of the signal propagation speed in vacuum)?, and (b)a 40...

A large population of ALOHA users manages to generate 50 requests/sec, includingboth originals and retransmissions. Time is slotted in units of 40 msec.(a) What is the ch...

A group of N stations share a 56-kbps pure ALOHA channel. Each station outputs a1000-bit frame on average once every 100 sec, even if the previous one has not yetbeen sen...

Consider a scnario of CSMA/CD network. Suppose A & B attempt to transmit a frame simultaneously and collide. Using exponential backoff algorithm A chooses K=0 and B choos...

If probability of frame reaching safely is 0.1 then mean number of transmissions of a frame to make it success is _____. what is wrong with the approach given below‘rando...

Let cluster of stations share 48kbps of pure aloha channel. Every station outputs frame of length 1024 bit in every 50 seconds. Then what is the maximum value of number o...

Here i'm not able to get after how much time X and Y will face first collision

Consider two nodes A and B on the same Ethernet, and suppose the propagation delay b/w the two nodes is 225-bit times. Suppose at the time both nodes A and B begin to tra...

Which among the following statements is NOT correct ? Packets sent on Ethernets are limited in size. Networks connected by Ethernets are limited in length to a few hu...

The baud rate isAlways equal to the bit transfer rateEqual to twice the bandwidth of an ideal channelNot equal to the signalling rateEqual to half of the bandwidth of an ...