Briefly describe the Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA) procedure.
What will be an ideal response?
Because the wireless medium is shared among all devices, there must be rules for cooperation among the wireless devices. The 802.11 standard uses a procedure known as Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA). CSMA/CA attempts to prevent multiple wireless devices from transmitting at the same time. It does this by requiring that all devices wait a random amount of time after a transmission is completed and the medium is clear.
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What is the primary purpose of the power supply?
A) Controls internal computer temperature B) Converts AC to DC C) Provides power to external devices D) Supplies AC electricity to the computer parts
From the following groups of terms, select one group whose items are incorrectly matched:
A) Motherboard: mainboard, planar, systemboard B) Memory: RAM, card, DVD C) Adapter: controller, controller card, circuit card D) Computer: tower, desktop, mobile