Which two functions are performed at the LLC sublayer of the OSI data link layer?
Question
Which two functions are performed at the LLC sublayer of the OSI data link layer?
Solution
The Logical Link Control (LLC) sublayer of the OSI data link layer performs two main functions:
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Error and Flow Control: The LLC sublayer is responsible for the control of errors and the flow of data. It ensures that data is sent and received without errors and in the correct sequence. It also controls the rate of data transmission between devices to prevent a fast sender from overwhelming a slow receiver.
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Multiplexing and De-multiplexing: The LLC sublayer also provides multiplexing mechanisms that allow several upper-layer protocols to share a single physical data link. It distinguishes different network protocols and then routes their data to the correct network layer protocol at the receiving end. This is done by adding a protocol discriminator field to the data frame.
Similar Questions
21Which two statements describe features or functions of the logical link control sublayer in Ethernet standards? (Choose two.)The LLC sublayer adds a header and a trailer to the data.The LLC sublayer is responsible for the placement and retrieval of frames on and off the media.The data link layer uses LLC to communicate with the upper layers of the protocol suite.Logical link control is implemented in software.Logical link control is specified in the IEEE 802.3 standard.Navigation Bar
5What is a characteristic of the LLC sublayer?It places information in the frame allowing multiple Layer 3 protocols to use the same network interface and media.It defines software processes that provide services to the physical layer.It provides delimitation of data according to the physical signaling requirements of the medium.It provides the logical addressing required that identifies the device.
Which two functions or operations are performed by the MAC sublayer? (Choose two.)It is responsible for Media Access Control.It handles communication between upper and lower layers.It performs the function of NIC driver software.It adds control information to network protocol layer data.It adds a header and trailer to form an OSI Layer 2 PDU.Navigation Bar
Which two functions are performed at the MAC sublayer of the OSI data link layer? (Choose two.)Please select 2 correct answersGroup of answer choicesImplements a trailer to detect transmission errors.Controls the NIC responsible for sending and receiving data on the physical medium.Adds Layer 2 control information to network protocol data.Enables IPv4 and IPv6 to utilize the same network interface and media.Places information in the frame that identifies which network layer protocol is being used for the frame.
At which OSI layer is data added to a PDU during the encapsulation process?network layertransport layerdata link layerapplication layerNavigation Bar
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