Term
| What is the top or last layer in the OSI model |
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Definition
| Layer 7 - Application Layer |
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Term
| What is Layer 6 in the OSI model? |
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Definition
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Term
| What is Layer 5 in the OSI model |
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Definition
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Term
| What is layer 5 in the OSI model |
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Definition
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Term
| What is layer 3 in the OSI model |
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Definition
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Term
| What is layer 2 in the OSI model |
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Definition
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Term
| What is layer 1 in the OSI model |
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Definition
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Term
This layer's charteristics are:
type of media used (such as cable, connector, pinout); identifies topology to be used (such as ring, mesh, star & bus); defines voltage on media & frequency at which signals that carry the data move from one state to another dictating speed, bandwidth & max distance media can be used. |
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Definition
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Term
| This layer is responsible for getting data to physical layer. Also responsible for error detection, error correction and hardware addressing. |
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Definition
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Term
| The term frame is used to describe the logical grouping of data at this layer? |
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Definition
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Term
| What are the 2 sublayers of the Data-link layer? |
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Definition
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Term
| This sublayer controls access to network media & defines the physical address |
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Definition
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Term
| This sublayer is is specified in 802.2 & responsible for error and flow conrol mechanisms |
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Definition
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Term
| The primary responsibility of this layer is routing. |
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Definition
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Term
| This layer does not specify how data is passed but rather provides the mechanisms to do so. |
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Definition
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Term
| Protocols at this layer are responsible for route selection |
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Definition
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Term
| The term packet is used to describe the logical grouping of data at this layer. |
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Definition
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Term
| This layer provides mechanisms to move data between network devices |
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Definition
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Term
| What are the 3 ways layer 4 uses to move data between network devices |
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Definition
| The transport layer uses error checking, service addressing & segmentation. |
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Term
| The transport layer makes sure that data is passed to the right service at the upper layers of the OSI model. What is this referred to as? |
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Definition
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Term
| blocks of data need to be broken down in layer 4 for the lower layers to handle. What is this process called? |
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Definition
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Term
| protocols that operate at this layer can be either connectionless or connection oriented |
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Definition
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Term
| This layer is responsible for flow control |
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Definition
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Term
| This refers to the way in which the receiving device can accept data transmissions |
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Definition
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Term
| What are the 2 common methods of flow control used |
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Definition
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Term
| When this is used, data is temporarily stored & waits for the destination device to become available. |
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Definition
| transport layer buffering flow control |
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Term
| In this environment, data is sent in groups of segments that require only 1 acknowledgment |
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Definition
| Transport layer flow control windowing |
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Term
| This layer is responsible for managing & controlling the synchronization of data between applications on 2 devices |
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Definition
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Term
| This layer establishes, maintains and breaks sessions |
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Definition
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Term
| The transport layer is responsible for setting up & maintaining connections on between 2 nodes, this layer performs the same function on behalf of the application |
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Definition
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Term
| The basic function of this layer is to convert the data intended for or received from the application layer into another format. |
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Definition
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Term
| commmon data formats converted by this layer include graphics files, text & data. |
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Definition
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Term
| This layer handles encryption and decryption |
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Definition
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Term
| this layer takes requests and data from users and pass them on. |
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Definition
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Term
| some basic services of this layer include file & print |
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Definition
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Term
| This layer defines the physical structure of the network and the topology. |
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Definition
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Term
| This layer provies error detection and correction. Uses 2 sub layers. Identifies methods by which media is accessed. Defines hardware addressing |
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Definition
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Term
| This layer handles discovery of destination systems and addressing. Provides mechanism by which data can be passed from one network system to another. |
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Definition
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Term
| This layer provides connection services between the sending and receiving devices and ensures reliable data delivery. Manages flow control through buffering or windowing. Provides segmentation, error checking and service identification. |
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Definition
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Term
| This layer synchronizes the data exchange between applications on separate devices |
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Definition
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Term
| This layer translates data from applications to a format that can be transmitted across the network. Handles encryption & decryption of data. Provides compression and decompression. |
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Definition
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Term
| Provides access to the network for software programs |
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Definition
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Term
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Definition
| This layer supports application and end-user processes. Communication partners are identified, quality of service is identified, user authentication and privacy are considered, and any constraints on data syntax are identified. Everything at this layer is application-specific. This layer provides application services for file transfers, e-mail, and other network software services. |
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Term
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Definition
| This layer provides independence from differences in data representation (e.g., encryption) by translating from application to network format, and vice versa. This layer formats and encrypts data to be sent across a network, providing freedom from compatibility problems. It is sometimes called the syntax layer. |
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Term
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Definition
| This layer establishes, manages and terminates connections between applications. The session layer sets up, coordinates, and terminates conversations, exchanges, and dialogues between the applications at each end. It deals with session and connection coordination. |
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Term
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Definition
| This layer provides transparent transfer of data between end systems, or hosts, and is responsible for end-to-end error recovery and flow control. It ensures complete data transfer. |
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Term
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Definition
| This layer provides switching and routing technologies, creating logical paths, known as virtual circuits, for transmitting data from node to node. Routing and forwarding are functions of this layer, as well as addressing, internetworking, error handling, congestion control and packet sequencing. |
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Term
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Definition
| At this layer, data packets are encoded and decoded into bits. It furnishes transmission protocol knowledge and management and handles errors in the physical layer, flow control and frame synchronization. The data link layer is divided into two sublayers: The Media Access Control (MAC) layer and the Logical Link Control (LLC) layer. The MAC sublayer controls how a computer on the network gains access to the data and permission to transmit it. The LLC layer controls frame synchronization, flow control and error checking. |
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Term
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Definition
| This layer conveys the bit stream - electrical impulse, light or radio signal -- through the network at the electrical and mechanical level. It provides the hardware means of sending and receiving data on a carrier, including defining cables, cards and physical aspects. |
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Term
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Definition
Application
Presentation
Session
Transport
Network
Data Link
Physical |
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Term
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Definition
Application
DHCP, DNS, FTP, HTTP, IMAP4, NNTP, POP3, SMTP, SNMP, SSH, TELNET and NTP |
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Definition
Presentation
SSL, WEP, WPA, Kerberos, |
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Term
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Definition
Session
Logical Ports 21, 22, 23, 80 etc… |
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Definition
Transport
TCP, SPX and UDP |
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Definition
Network
IPv4, IPV6, IPX, OSPF, ICMP, IGMP and ARP |
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Definition
Data Link
802.11 (WLAN), Wi-Fi, WiMAX, ATM, Ethernet, Token Ring, Frame Relay, PPTP, L2TP and ISDN- |
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Term
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Definition
Physical
Hubs, Repeaters, Cables, Optical Fiber, SONET/SDN,Coaxial Cable, Twisted Pair Cable and Connectors |
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Term
OSI Layer Model
Hubs/Repeaters |
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Definition
| are found in the Physical Layer |
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Term
OSI Layer Model
Switches /Bridges/Wireless Access Point |
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Definition
| are found in the Data Link Layer |
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Term
OSI Layer Model
Multilayer Switch |
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Definition
| are found in both the Data Link Layer and Network Layer |
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Term
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Definition
| are found in the Network Layer |
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Term
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Definition
| are found in All 7 of the OSI Layers |
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Term
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Definition
| are found in both the Data Link and Network Layer |
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