InterviewUp – Job Interview Questions and Answers – what is hand shaking in networking ?

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Asked By: sargam |

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Binary Exponential Backoff Algorithm was chosen to dynamically adapt to the number of stations trying to send. If the randomization interval for all collision was 1023 slots, the chance of two stations colliding for a second time would be negligible, but the average wait after a collision would be hundreds of slot times, introducing significant delay. On the other hand, if each station always delayed for either 0 or 1 slot, then if 100 stations ever tried to send at once, they would collide over and over until 99 of them picked 1 and the remaining station picked 0. This may take years. But having the randomization interval grow exponentially as more and more consecutive collisions occur, the algorithm ensures a low delay when only a few stations collide but also ensures that the collision is resolved in a reasonable interval when many stations collide. Truncating the backoff at 1023 keeps the bound from growing too large.

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Monday, January 07, 2008

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hackone

Tuesday, October 28, 2008 11:54 AM

Binary Exponential Backoff Algorithm was chosen to dynamically adapt to the number of stations trying to send. If the randomization interval for all collision was 1023 slots, the chance of two stations colliding for a second time would be negligible, but the average wait after a collision would be hundreds of slot times, introducing significant delay. On the other hand, if each station always delayed for either 0 or 1 slot, then if 100 stations ever tried to send at once, they would collide over and over until 99 of them picked 1 and the remaining station picked 0. This may take years. But having the randomization interval grow exponentially as more and more consecutive collisions occur, the algorithm ensures a low delay when only a few stations collide but also ensures that the collision is resolved in a reasonable interval when many stations collide. Truncating the backoff at 1023 keeps the bound from growing too large.

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100

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What does 100 mean in 100BaseT?

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Asked By: Dawn |

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100 means 100 bps (bits per second). This is the data transfer speed for cables.

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Friday, March 28, 2008

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network, networking, cabling, twisted pair, data speed

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Network Technician

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TwistedTechie

Monday, October 06, 2008 4:57 AM

It should be 100Mbps not 100bps.

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no-one

Wednesday, July 02, 2008 6:57 AM

That is not correct

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Asked By: smhsha |

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Web 2.0 is a trend in the use of World Wide Web technology and web design that aims to facilitate creativity, information sharing, and, most notably, collaboration among users. These concepts have led to the development and evolution of web-based communities and hosted services, such as social-networking sites, wikis, blogs, and folksonomies (the practice of catgorising content through tags). Although the term suggests a new version of the World Wide Web, it does not refer to an update to any technical specifications, but to changes in the ways software developers and end-users use the internet.

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Thursday, September 25, 2008

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Partner liason

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25

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what is tcp/ip, udp and ftp

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Asked By: Anonymous |

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These are networking protocols tcp/ip for internet protocal
udp is the data format
ftp is file transfer protocol

typically used by hackers to connect, get the data and do the file transfer.

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Sunday, August 03, 2008

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47

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What is difference between baseband and broadband transmission?

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Asked By: Anonymous |

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In a baseband transmission, the entire bandwidth of the cable is consumed by a single signal. In broadband transmission, signals are sent on multiple frequencies, allowing multiple signals to be sent simultaneously.

Also

Baseband Signalling:

1)Uses digital signalling

2)No frequency-division multiplexing

3)Bi-directional transmission

4)Signal travels over short distances

Broadband Signalling:

1)Uses analog signalling

2)Unidirectional transmission

3)Frequency-division multiplexing is possible

4)Signal can travel over long distances before being attenuated

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Monday, April 28, 2008

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networking

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Network Administrator

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56

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What is silly window syndrome?

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Asked By: Anonymous |

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Silly window syndrome is a problem in computer networking caused by poorly-implemented TCP flow control. If a server with this problem is unable to process all incoming data, it requests that its clients reduce the amount of data they send at a time (the "window" setting on a TCP packet). If the server continues to be unable to process all incoming data, the window becomes smaller and smaller, sometimes to the point that the data transmitted is smaller than the packet header, making data transmission extremely inefficient. The name of this problem is due to the window size shrinking to a "silly" value.

Since there is a certain amount of overheadassociated with processing each packet, the increased number of packets means increased overhead to process a decreasing amount of data. The end result is thrashing.

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Monday, April 28, 2008

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networking

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Network Administrator

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