Term
| Internal Factors That Impact Network Communication: |
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Definition
1) The size of the message
2) The complexity of the message
3) The importance of the message |
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Term
| External Factors That Impact Network Communication: |
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Definition
1) Whether a confirmation of message was returned to sender
2) The quality of the pathway between sender and recipient
3) The number of times the message has to change form
4) The number of other messages in communication network
5) The number of times the message is reformatted
6) The amount of time allotted for successful communication |
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Term
| A data network consists of: |
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Definition
1) Device
2) Medium
3) Message
4) Rule |
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Term
| Factors of Quality of Service: |
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Definition
1) Balancing traffic importance
2) Balancing traffic characteristic |
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Term
| Data network security aspects: |
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Definition
| 1) Interception of data communications 2) Unauthorized access to the network and its data |
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Term
| Benefits of Data Segmentation |
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Definition
1) Allowed multiplexing
2) Increase reliability |
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Term
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Definition
| The process used to interleave the pieces of separate conversations together on the network |
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Term
| The downside to using segmentation and multiplexing: |
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Definition
| Increasing the level of complexity |
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Term
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Definition
1) The path
2) Devices and media
3) Services and processes |
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Term
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Definition
| Either the source or destination of a message transmitted over the network |
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Term
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Definition
| hosts that have software installed that enables them to provide information and services |
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Term
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Definition
| hosts that have software installed that enables them to request and display the information obtained from the server. |
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Term
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Definition
| Connects directly to end user devices or provides end user routing to other networks |
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Term
| Processes running on the intermediary network devices |
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Definition
1) Regenerate and retransmit data signals
2) Maintain information about what pathways exist through the network and internetwork
3) Notify other devices of errors and communication failures
4) Direct data along alternate pathways when there is a link failure
5) Classify and direct messages according to QoS priorities
6) Permit or deny the flow of data, based on security settings |
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Term
| Criteria for choosing a network media are: |
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Definition
1) The distance the media can successfully carry a signal.
2) The environment in which the media is to be installed.
3) The amount of data and the speed at which it must be transmitted.
4) The cost of the media and installation |
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Term
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Definition
| A local network or a group of interconnected networks under the same administrative control |
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Term
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Definition
| LANs separated by geographical distance are connected by WAN |
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Term
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Definition
| Private connections of LANs and WANs belong to an organization |
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Term
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Definition
| A group of inter-related protocols that are necessary to perform a communication function |
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Term
| Benefits of using a layered model in protocol suites: |
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Definition
1) Assists in protocol design,
2) Fosters competition
3) Prevents technology or capability changes in one layer from affecting other layers above and below.
4) Provides a common language to describe networking functions and capabilities. |
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Term
| Open Systems Interconnection (OSI) model: |
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Definition
7) Application
6) Presentation
5) Session
4) Transport
3) Network
2) Data Link
1) Physical |
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Term
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Definition
4) Application (layers 5,6,7 From OSI)
3) Transport (layer 4 OSI)
2) Internet (layer 3 OSI)
1) Network Access (layers 1 and 2 OSI) |
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Term
| Protocol Data Unit (PDU): |
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Definition
| The form that a piece of data takes at any layer |
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Term
| PDU in different levels of encapsulation: |
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Definition
1) Data - The general term for the PDU used at the Application layer
2) Segment - Transport Layer PDU
3) Packet - Internetwork Layer PDU
4) Frame - Network Access Layer PDU
5) Bits - A PDU used when physically transmitting data over the medium |
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Term
| Presentation layer primary functions: |
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Definition
1) Coding and conversion
2) Compression
3) Encryption |
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Term
| Session layer primary functions: |
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Definition
1) Handles the exchange of information to initiate dialogs
2) Keep them active
3) Restart sessions that are disrupted or idle for a long period of time. |
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Term
| Most widely known Application layer protocols: |
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Definition
1) DNS Server
2) Telnet Server
3) E-Mail Server
4) DHCP Server
5) Web Server
6) FTP Server |
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Term
| Domain Name System (DNS) port number: |
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Definition
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Term
| Hypertext Transfer Protocol (HTTP) port number: |
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Definition
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Term
| Simple Mail Transfer Protocol (SMTP) port number: |
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Definition
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Term
| Post Office Protocol (POP) port number: |
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Definition
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Term
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Definition
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Term
| Dynamic Host Configuration Protocol (DHCP) port number: |
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Definition
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Term
| File Transfer Protocol (FTP) port number: |
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Definition
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Term
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Definition
1) Header
2) Question
3) Answer
4) Authority
5) Additional |
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Term
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Definition
| a client request for data from webserver |
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Term
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Definition
| Upload information to webserver |
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Term
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Definition
| Uploads resources or content to the web server |
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Term
| The processes of email server: |
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Definition
1) Mail Transfer Agent (MTA)
2) Mail Delivery Agent (MDA) |
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Term
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Definition
| Identifies the SMTP client process to the SMTP server process |
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Term
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Definition
| Is a newer version of HELO, which includes services extensions |
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Term
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Definition
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Term
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Definition
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Term
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Definition
| DATA - Identifies the body of the message |
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Term
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Definition
| The client establishes the first connection to the server on TCP port 21. This connection is used for control traffic, consisting of client commands and server replies. |
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Term
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Definition
| The client establishes the second connection to the server over TCP port 20. This connection is for the actual file transfer and is created every time there is a file transferred. |
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Term
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Definition
1) DHCP Discover
2) DHCP Offer
3) DCHP Request
4) DHCP Acknowledge |
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Term
| Gnutella protocol packet types: |
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Definition
1) ping - for device discovery
2) pong - as a reply to a ping
3) query - for file location
4) query hit - as a reply to a query
5) push - as a download request |
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