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CISS 161
CCNA
36
Computer Networking
Undergraduate 2
09/20/2015

Additional Computer Networking Flashcards

 


 

Cards

Term
Transport Level Encapsulation
Definition
Segments
Term
Network Level Encapsulation
Definition
Packet
Term
Data Link Level Encapsulation
Definition
Frame
Term
Physical Level Encapsulation
Definition
Bits
Term
OSI Model
Definition
7 - Application
6 - Presentation
5 - Session
4 - Transport
3 - Network
2 - Data Link
1 - Physical
Term
Copper Cable Signal
Definition
Electrical Pulses
Term
Fiber-optic Signal
Definition
Patterns of Light
Term
Wireless
Definition
Patterns of Microwave Transmissions
Term
TCP/IP Layer Standards Governed by:
Definition
IETF Governs this layer of the OSI Model
Term
Physical Layer Standards Governed by:
Definition
ISO
EIA/TIA
ITU-T
ANSI
IEEE
Term
Manchester Encoding
Definition
A 0 is represented by a high to low voltage transition and a 1 is represented as a low to high voltage transition. This type of encoding is used in older versions of Ethernet, RFID and Near Field Communication.
Term
Non-Return to Zero (NRZ)
Definition
This is a common means of encoding data that has two states termed “zero” and “one” and no neutral or rest position. A 0 may be represented by one voltage level on the media and a 1 might be represented by a different voltage on the media.
Term
Asynchronous Signal
Definition
Data signals are transmitted without an associated clock signal. The time spacing between data characters or blocks may be of arbitrary duration, meaning the spacing is not standardized. Therefore, frames require start and stop indicator flags.
Term
Synchronous
Definition
Data signals are sent along with a clock signal which occurs at evenly spaced time durations referred to as the bit time.
Term
Throughput
Definition
the measure of the transfer of bits across the media over a given period of time.
Term
Latency
Definition
the amount of time, to include delays, for data to travel from one given point to another
Term
Goodput
Definition
the measure of usable data transferred over a given period of time.
Term
Data Link Layer
Definition
It accepts Layer 3 packets and packages them into data units called frames

It controls media access control and performs error detection
Term
Logical Link Control (LLC)
Definition
This upper sublayer defines the software processes that provide services to the network layer protocols. It places information in the frame that identifies which network layer protocol is being used for the frame. This information allows multiple Layer 3 protocols, such as IPv4 and IPv6, to utilize the same network interface and media.
Term
Media Access Control (MAC)
Definition
This lower sublayer defines the media access processes performed by the hardware. It provides data link layer addressing and delimiting of data according to the physical signaling requirements of the medium and the type of data link layer protocol in use.
Term
Frame start and stop indicator flags
Definition
Used by the MAC sublayer to identify the beginning and end limits of the frame
Term
Addressing
Definition
Used by the MAC sublayer to identify the source and destination nodes
Term
Type
Definition
Used by the LLC to identify the Layer 3 protocol
Term
Control
Definition
Identifies special flow control services
Term
Data
Definition
Contains the frame payload (i.e., packet header, segment header, and the data)
Term
Error Detection
Definition
Included after the data to form the trailer, these frame fields are used for error detection
Term
Topology
Definition
How the connection between the nodes appears to the data link layer
Term
Media sharing
Definition
How the nodes share the media. The media sharing can be point-to-point such as in WAN connections or shared such as in LAN networks
Term
Start Frame field
Definition
Indicates the beginning of the frame
Term
Source and Destination Address fields
Definition
Indicates the source and destination nodes on the media
Term
Type field
Definition
Indicates the upper layer service contained in the frame
Term
Priority/Quality of Service field
Definition
Indicates a particular type of communication service for processing
Term
Logical connection control field
Definition
Used to establish a logical connection between nodes
Term
Physical link control field
Definition
Used to establish the media link
Term
Flow control field
Definition
Used to start and stop traffic over the media
Term
Congestion control field
Definition
Indicates congestion in the media
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