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State about CSMA/CA
It belongs to a class of protocols known as multiple access methods. CSMA/CA stands for: Carrier Sense Multiple Access with Collision Avoidance. In CSMA, a station willing to transmit has to first listen to channel for a predetermined amount of time so as to check for any activity on channel. If channel is sensed "idle" then station is permitted to transmit. If channel is sensed as "busy" station has to defer its transmission. This is essence of both CSMA/CD and CSMA/CA. In CSMA/CA (Local Talk), once channel is clear, a station transmits a signal telling all other stations not to transmit, and then sends its packet. In Ethernet 802.3, station continues to wait for a time, and checks to see if channelis still free. If it is free, station transmits, and waits for an acknowledgment signal that packet was received.
Add a byte number from one memory location to a byte from subsequent memory location and put sum in the third memory location. Also save carry flag in the least significant bit of
Rational RequisitePro is a needed management tool that helps project teams control the development process. RequisitePro organizes your requirements by linking Microsoft Word to a
Translation Look aside Buffer : A TLB is a cache that holds only page table mapping If there is no matching entry in the TLB for a page ,the page table have to
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why to learn data base?
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