CNIT 344 Exam 1 Questions And Answers Rated A+.
Components of Communication - correct answer. Message Source -> Encoder -> Transmitter -> Transmission Medium "The Channel" -> Receiver -> Decoder -> Message Destination
What ISO Standard is the OSI Model? - correct ...
Components of Communication - correct answer. Message Source -> Encoder ->
Transmitter -> Transmission Medium "The Channel" -> Receiver -> Decoder ->
Message Destination
What ISO Standard is the OSI Model? - correct answer. ISO Standard 7498.
(ITU-T specifies X.200-X.299 Recommendations).
What does OSI stand for? - correct answer. Open System Interconnection.
What does the OSI Model do? - correct answer. It defines 7 layers that describe the
complete application-based communications between any two systems. It provides
open interconnections between layers, such that multi-vendor environments can be
supported.
What are the Rules for Communication for the OSI Model? - correct answer. 1. The
communication between layers is handled in a specified (defined) manner.
2. Each layer is only able to communicate with its adjacent layers.
3. Each layer relies on the layers below it to perform their specified function.
4. Each layer relies on the layers above it to perform their specified function.
What are some benefits to the OSI Model? - correct answer. 1. Breaks network
communication into smaller, more manageable parts. Prevents changes in one layer
from affecting other layers.
2. Standardizes network components to allow multiple vendor development and
support.
, 3. Allows different types of network hardware and software to communicate with each
other.
1st Layer of the OSI Model - correct answer. Physical Layer
2nd Layer of the OSI Model - correct answer. Data Link Layer
3rd Layer of the OSI Model - correct answer. Network Layer
4th Layer of the OSI Model - correct answer. Transport Layer
5th Layer of the OSI Model - correct answer. Session Layer
6th Layer of the OSI Model - correct answer. Presentation Layer
7th Layer of the OSI Model - correct answer. Application Layer
List all 7 layers of the OSI Model - correct answer. 7. Application
6. Presentation
5. Session
4. Transport
3. Network
2. Data Link
1. Physical
What is the physical layer of the OSI model responsible for? - correct answer. It is
responsible for the transmission and receipt of the bit stream to/from nodes. It is solely
concerned with signaling techniques (such as activating, maintaining, and terminating
the physical circuit).
Where is the physical layer of the OSI model defined? - correct answer. X.211
What is the data link layer of the OSI model responsible for? - correct answer. It is
responsible for providing point-to-point validity of the data via point-to-point
checking/correction, and it is responsible for the procedures and protocols for reliably
operating the communication links.
It has an independent address architecture from other layers.
What does the data link layer convert? - correct answer. It converts data into frames.
What are the two sub-layers in the data link layer? - correct answer. - MAC
- LLC
Where is the data link layer of the OSI model defined? - correct answer. X.212
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