This service allows us to access a node by its name. MAC Address: Specifies the media access control (MAC) address of the file.Function in the physical layer of the OSI ModelDNS stands for Domain Name Service. When authenticating the (MAC address of an internet user against predefined combinations of MAC addresses and IP addresses, the network-based MAC address scan fails.For example, the server might have to convert the file space name that you. This article contains information about how to configure NetScaler Gateway EPA to scan the Media Access Control (MAC) address to authenticate the IP address of the user.In the OSI reference model for networking, the MAC is a Layer 2 - or data link layer - device, and the MAC address is a Layer 2 address. Lets take an example.Physical layer performs the following functions :Media access control refers to the piece of hardware that controls how data is pushed out onto a network. When we access a node by its name, the DNS service translates the name into the IP address. DNS service allows us to map a name to an IP address.
Each Of The Following Is A Name For The Media Access Control () Address Except How To Configure NetScalerData Link LayerThe node to node delivery of a message is possible due to the data link layer. Mode of Transmission: The way of transmission between two devices i.e., simplex, half-duplex, or full-duplex is also defined by this layer. There are various topologies through which devices can be connected i.e, star topology (devices are connected through a central device), a ring topology (each device is attached to the next, making a ring), a mesh topology (each device connected to every other device), or a bus topology (each device on a common link) Physical Topologies: To create a network the connection of devices is defined by physical topology. Data Rate: The number of bits sent per second which is also known as transmission rate is defined by this layer. In another way transmitter and receiver, clocks should be synchronized. From the network layer data packets are received by this layer which is encapsulated into frames. This creates a path by which significant information can be transferred to the receiver by the sender. Framing: The Data link layer performs a function known as framing. To get the receiver’s MAC address, a request is placed by the sender by sending the IP address whose MAC address is required and in returns gets the destination MAC address.Function in the data link layer of the OSI ModelData Link Layer performs the following functions: In a network when a data packet arrives, the data link layer is responsible to transmit it to the host, using its MAC address.This layer is sub-divided into two layers:Depending on the frame size of NIC(Network Interface Card) the packets received from the network layer are further divided into frames. This flow of data is controlled by this layer. Flow Control: The data rate should be constant on both side i.e., the rate of generating the data must be equal to the rate of absorbing the data by the receiver. Physical Addressing: The MAC address or physical address is added to the header of each frame of the sender and/or receiver by this layer. A special bit pattern at the beginning and end of each frame is attached so that it can be assembled again by the receiver. Although, when two systems are connected to the different networks, this layer is required as it achieves the transmission of data from one host to another. The network layer is not needed when both the systems are connected to the same link. Network LayerThe delivery of packets across multiple networks(links) from source to destination is the responsibility of the network layer. Access Control: At a channel when there are more than one device connected this layer helps it to determine which device has command over it. Generally, error control is obtained via a trailer added to the frame end. It also deploys a method to restrict duplication of frames. ![]() These numbers allow the transport layer to reassemble the message accurately and for identifying and replacing the packets which were lost during transmission. Segmentation and Reassembly: Multiple transmittable segments are formed by splitting a message, each having a sequence number. Function in the transport layer of the OSI ModelFunctions of the transport layer are as follows: The intact arrival of the entire message is ensured by this layer. Thus each packet is received by the network layer to the correct computer.The establishment of connection, maintenance, synchronization, and termination of connection is the responsibility of this layer. To assure the transmission of those packets, a kind of address is added known as service -point address (or port address) by the transport layer. Due to this reason, the delivery of packets only from source-to-destination is not sufficient but they should also be delivered to the specific process on one computer to a specific process to another computer. Presentation LayerThe presentation layer ensures that communicating machines can interoperate properly. Dialog Control: he communication between two systems are permitted by this layer which can be in any mode i.e., half-duplex (one away at a time) or full-duplex (both ways data at a time). These checkpoints check whether the data is properly synced or not and this helps in avoiding any kind of data loss. Synchronization: In a data stream, multiple synchronization points or simply checkpoints are added by this layer. Function in the session layer of the OSI Model The data is translated into another form using data encryption. Encryption/Decryption: A system must be capable of assuring privacy for carrying sensitive information. Function in the presentation layer of the OSI ModelThe following functions are performed by this layer: If syntax between the two communicating users is different then this layer operates as a translator. Compression: The number of bits sent through a network can be reduced by data compression. At the receiving machine, this layer again converts the common format into its receiver-dependent format. Information is converted into a common format from sender dependent format by this layer at the transmitter. The information before transmission must be converted into bitstreams. Translation: Since different computers use different encoding method, the interoperability is the responsibility of the presentation layer. Both encryption and decryption are carried out using a key value. Ayutha ezhuthu tamil full movie free downloadThe UI (user interface) and maintenance for services such as e-mail and remote file access control are implemented through this layer. The data that has to be transferred over the network is produced by these applications. This layer allows the user to access the network. Mail Services: The e-mail forwarding and storage functionalities are also provided by this application.The late invention of the OSI Model is the reason it is not implemented on the internet and is used just as a reference. Directory Services: The access to database sources for global information is provided by this application. Network Virtual Terminal: This function allows the user to log on to a remote host. FTAM (File Transfer Access and Management): This function allows the user to read, write, and perform various operations on a file on a remote computer.
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