DATA LINK LAYER WIRED NETWORKS
WIRED LANS ETHERNET PROTOCOL
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which two functions or operations are performed by the MAC sublayer? (Choose two.)
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It is responsible for Media Access Control.
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It performs the function of NIC driver software.
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It adds a header and trailer to form an OSI Layer 2 PDU.
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It handles communication between upper and lower layers.
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It adds control information to network protocol layer data.
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Explanation:
Detailed explanation-1: -The two primary functions of the MAC sublayer are to encapsulate the data fromthe upper layer protocols and to control access to the media.
Detailed explanation-2: -According to IEEE Std 802-2001 section 6.2. 3 “MAC sublayer", the primary functions performed by the MAC layer are: Frame delimiting and recognition.
Detailed explanation-3: -Option 3-To implement Ethernet communication functions performed at the MAC sub-layer of the data link layer at OSI model is implementing CSMA/CD using the half-duplex method. Hence it is the correct option.
There is 1 question to complete.