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30 Cards in this Set
- Front
- Back
Define "standards."
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documented agreements containing technical specifications or other precise criteria that serve as guidelines to ensure that materials, products, processes, and services suit their purpose
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Name 5 significant networking standards organizations.
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1) American National Standards Institute; 2) Electronic Industries Alliance; 3) Institute of Electrical and Electronic Engineers; 4) International Organization for Standardization; 5) International Telecommunications Union (formerly the CCITT)
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Name the 7 layers of the Open Systems Interconnection (OSI) Model.
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1) Physical; 2) Data Link; 3) Network; 4) Transport; 5) Session; 6) Presentation; 7) Application -- "Please Do Not Throw Sausage Pizza Away"
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What does the Physical Layer contain?
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the physical networking medium, such as cabling, connectors, and repeaters
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What do protocols at the Physical layer do?
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they generate and detect voltage, to transmit and receive signals carrying data
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Name 2 responsibilities of the Physical Layer
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it sets the data transmission rate and monitors data error rates. It does not provide error correction
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What does the Data Link Layer bridge?
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it bridges the networking media with the abstract software and data streams
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What is the Data Link Layer's primary function?
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to divide data it receives from the Network Layer into frames that can be transmitted by the Physical layer
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What devices work in the Data Link layer?
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connectivity devices such as bridges and switches, because they decode frames and use the frame information to transmit data to its correct recipient
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What does the Network Layer manage?
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it manages addressing, routing, and segmentation and reassembly of packets
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Which OSI Layer do routers operate in?
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routers belong to the Network Layer because they use addressing, usage patterns, and availability to intelligently direct data from sender to receiver
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What is the Transport Layer's primary responsibility?
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ensuring data arrives reliably, even across segments. the Transport Layer checks the order or sequence of frames and checks errors
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What is the function of the Session Layer?
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establishing and maintaining communication between two nodes on the network
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What is the traffic cop of network communications?
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the Session Layer
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What does the term session refer to?
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a connection for data exchange between two parties; most often with terminal-to-mainframe communications
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What is the function of the Presentation Layer?
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translates between the application and the network. At the Presentation layer, data are formatted in a schema that the network can understand; this format varies with the type of network used
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What layer handles encryption?
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the Presentation Layer manages encryption and decryption, such as the scrambling of passwords
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What does the Application Layer provide?
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it provides interfaces to the software that enable it to use network services
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Name 3 services provided by the Application Layer.
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file transfer, file management, and message handling for electronic mail
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What are frames?
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small blocks of data with control, addressing, and handling information attached. Frames are composed of several smaller components
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What are the two major categories of frame types?
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Ethernet and Token Ring
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What 2 types of addresses identify network nodes?
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Network Layer addresses and Data Link Layer addresses
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What are Data Link Layer addresses?
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addresses hardwired into the networking device, also called physical, MAC, or hardware addresses
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What are Network Layer addresses?
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addresses assigned to devices through operating software, also called logical or virtual addresses
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What is the structure of logical addresses?
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they are hierarchical, so they can be easily interpreted by routers and used to direct data to their destinations
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Give 5 examples of topics covered by IEEE networking specifications.
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frame types, networking media, error checking algorithms, encryption, emerging technologies
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What is the umbrella name of IEEE's standardization of the elements of networking?
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IEEE Project 802
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What is the IEEE expansion of Data Link Layer
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two sublayers: the Logical Link Control (LLC) sublayer and the Medium Access Control (MAC) sublayer
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What does the Logical Link Control sublayer provide?
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reliability and flow control services
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What does the Medium Access Control sublayer provide?
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it appends the physical address of the destination computer onto the data frame
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