What does the acronym "ISO" stand for?
International Standards Organization
What does the acronym "OSI" stand for?
Open Source Interconnect
What is the purpose of the OSI Model?
Provide a model to discribe how data moves from source device to destination device.

What are the advantages of the OSI model?
- Provides a standard for hardware development- Allows modular SW development- Facilitates rapid development of new technology
How many Layers in the OSI Model?
Seven
What is layer 1 of the OSI model?
Physical layer.
What is layer 2 of the OSI model?
Data Link layer.
What is layer 3 of the OSI model?
Network layer.
What is layer 4 of the OSI model?
Transport layer.
What is layer 5 of the OSI model?
Session layer.

What is layer 6 of the OSI model?
Presentation layer.
What is layer 7 of the OSI model?
Application layer.
OSI layers are theoretical?
True
What is the Mnemonic phrase for remembering OSI layers ordered 1 to 7?
Please Do Not Throw Sausage Pizza Away(Physical, Data Link, Network, Transport, Session, Presentation, Application)
What is the Mnemonic phrase for remembering OSI layers ordered 7 to 1?
All People Seem To Need Data Processing(Application, Presentation, Session, Transport, Network, Data Link, Physical)
What are the first 4 layers of the OSI model called?
Data Flow layers.
What are considered the Data Flow layers?
Physical, Data Link.

Network, Transport

What is the Physical Layer responsible for?
Moving "Bits" from "Source" device to "Destination" device across "Media".
In an OSI context what is considered "media"?
Cables, Pins, Electrical Signals
Where does troublingshooting alway start?
Physical Layer
What are some Physical Layer Protocols and Standards?
IEA RS232, V.35. Cat 5, RJ45
What are are the "Sub Layers" of the "Data Link" Layer?
MAC SubLayerLLC SubLayer
What does the acronym "MAC" stand for?
Media Access Control
What does the acronym "LLC" stand for?
Logicial Link Control
What is the "Data Link Layer" responsible for?
Combining "Bits" into "Bytes"& "Bytes" into "Frames"The data link layer provides the functional and procedural means to transfer data between network entities and might provide the means to detect and possibly correct errors that may occur in the physical layer.
What is the "MAC Layer" responsible for?
The media access control (MAC) data communication protocol sub-layer, is a sublayer of the data link layer specified in the seven-layer OSI model (layer 2). It provides addressing and channel access control mechanisms that make it possible for several terminals or network nodes to communicate within a multiple access network that incorporates a shared medium, e.

g. Ethernet.

What is the "LLC Layer" responsible for?
It provides multiplexing mechanisms that make it possible for several network protocols (IP, IPX, Decnet and Appletalk) to coexist within a multipoint network and to be transported over the same network media, and can also provide flow control and automatic repeat request (ARQ) error management mechanisms
What is the MAC address?
48 bit address used to identify networking cards and appliances
How bits are in a MAC address?
48 Bits
What are other names for MAC address?
Hardware addressEthernet addressBIA - Burned in Address
What are some examples of "LAN" side Datalink Layer Protocols and Standards?
802.2 - Logical Link Control802.3 - Ethernet802.

5 - Token Ring802.11 - Wireless

What are some examples of "WAN" side "Encapsulation" type Datalink Layer Protocols and Standards?
HDLC - High Level Data Link ControlPPP - Point to PointFrame Relay - ISDN - ATM
What does the acronym "LAN" stand for?
Local Area Network
What does the acronym "WAN" stand for?
Wide Area Network
What does the acronym default "HDLC" protocol stand for?
High Level Data Link Control
What does the acronym "PPP" stand for?
Point to Point
When would the PPP be used?
When require to communicate between different vendors across the same serial link.
What does the acronym "PPPoA" stand for?
Point-to-Point Protocol over ATM
Frame Relay
Wide area network technology that specifies the physical and logical link layers of digital telecommunications channels using a packet switching methodology
What does the acronym "ISDN" stand for?
ISDN - Integrated Services Digital Network
What does the acronym "ATM" stand for?
Asynchronous Transfer Mode
What is ATM?
ATM is a standard switching technique, designed to unify telecommunication and computer networks. It uses asynchronous time-division multiplexing and it encodes data into small, fixed-sized cells.
What is the OSI model and why is it important in understanding networking?
OSI model classifies and organizes the tasks that hosts perform to prepare data for transport across the network.

It most widely used method for understanding and talking about network communications

How does the third OSI model layer relate to administering routers?
The third layer is the networking layer which is responsible for routing packets across the network to ther=ir destination
Which OSI model layer is concerned with MAC addresses?
Layer 2 - The Data Link layer.
What protocols correspond to the Presentation and Session layers?
Application:JPEG, BMP, TIFF, PICT MPEG, WMV, AVI ASCII, EBCDIC MIDI, WAV Session:Network File System (NFS) Apple Session Protocol (ASP)Structured Query Language (SQL) Remote procedure call (RPC) X Window
What is the difference between the TCP and UDP protocols?
TCP:Connection orientedHigh reliabilityHigh overheadUDP:ConectionlessLow reliabilityLow overhead
What is the EIA/TIA 232 protocol concerned with?
Layer 1 Protocol having to do with serial communication
What does the acronym "HDLC" stand for?
High-Level Data Link Control
What is HDLC?
It is a bit-oriented synchronous data link layer protocol developed by the International Organization for Standardization (ISO). The original ISO standards for HDLC are: ISO 3309 — Frame Structure ISO 4335 — Elements of Procedure ISO 6159 — Unbalanced Classes of Procedure ISO 6256 — Balanced Classes of Procedure The current standard for HDLC is ISO 13239, which replaces all of those standards.
What is the "medium access controller"?
The hardware that implements the MAC.