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- Definition of Hardware Specifications: The details of operation of cables, connectors, wireless radio transceivers, network interface cards and other hardware devices are generally a function of the physical layer (although also partially the data link layer; see below).
- Encoding and Signaling: The physical layer is responsible for various encoding and signaling functions that transform the data from bits that reside within a computer or other device into signals that can be sent over the network.
- Data Transmission and Reception: After encoding the data appropriately, the physical layer actually transmits the data, and of course, receives it. Note that this applies equally to wired and wireless networks, even if there is no tangible cable in a wireless network!
- Topology and Physical Network Design: The physical layer is also considered the domain of many hardware-related network design issues, such as LAN and WAN topology.
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What are three functions of the upper data link sublayer in the OSI model?
identifies the network layer protocol makes the connection with the upper layers insulates network layer protocols from changes in physical equipment
What are three functions of the upper data link sub layer in the OSI model?
insulates network layer protocols from changes in physical equipment makes the connection with the upper layers identifies the source and destination identifies the network layer protocol
What are the three layers that a router must implement to operate?
A router must implement the Physical layer, the Link layer, and the Network layer
What are the three functions of physical?
skill development, sportsmanship and good health.
What are the three fundemental questions that every economic system must answer?
what to produce. how to produce. who gets it
What primary three functions does data link layer encapsulation provide?
* addressing * error detection * frame delimiting
What are the three primary functions provided by Layer 2 data encapsulation?
Primary functions provided by Layer 2 data encapsulation include data link layer addressing, and the detection of errors via cyclic redundancy check calculations. An additional function is delimiting groups of bits into frames.
Which is an important factor when choosing a Layer 2 protocol?
-The geographic scope of the network -The physical layer implementation -The number of hosts to be interconnected
What are the three functions of the upper data link sublayer in the OSI model?
recognizes streams of bits **identifies the network layer protocol **makes the connection with the upper layers identifies the source and destination applications **insulates network layer protocols from changes in physical equipment determines the source of a transmission when multiple devices are transmitting
How many osi layer are covered in the X25 standard?
Its Three. Which are: Physical, Data Link and Network Layers
Hich three factors should be considered when implementing a Layer 2 protocol in a network?
the geographic scope of the network the physical layer implementation the number of hosts to be interconnected
What are the three function of physical education?
Physical education is very important just like the mental education. The three functions of physical education are: promotes physical fitness, helps learners develop emotionally and socially, and helps in the skill development.
