CNIT 344 Exam 1 Questions With Correct Answers

CNIT 344 Exam 1 Questions With Correct
Answers

Components of Communication - CORRECT ANSWER✔✔-Message Source ->
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Encoder -> Transmitter -> Transmission Medium "The Channel" -> Receiver ->
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Decoder -> Message Destination
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What ISO Standard is the OSI Model? - CORRECT ANSWER✔✔-ISO Standard 7498.
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(ITU-T specifies X.200-X.299 Recommendations).
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What does OSI stand for? - CORRECT ANSWER✔✔-Open System Interconnection.
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What does the OSI Model do? - CORRECT ANSWER✔✔-It defines 7 layers that
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describe the complete application-based communications between any two
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systems. It provides open interconnections between layers, such that multi-
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vendor environments can be supported.
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What are the Rules for Communication for the OSI Model? - CORRECT
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ANSWER✔✔-1. The communication between layers is handled in a specified
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(defined) manner. |




2. Each layer is only able to communicate with its adjacent layers.
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3. Each layer relies on the layers below it to perform their specified function.
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,4. Each layer relies on the layers above it to perform their specified function.
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What are some benefits to the OSI Model? - CORRECT ANSWER✔✔-1. Breaks
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network communication into smaller, more manageable parts. Prevents changes
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in one layer from affecting other layers.
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2. Standardizes network components to allow multiple vendor development and
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support.


3. Allows different types of network hardware and software to communicate with
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each other.
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1st Layer of the OSI Model - CORRECT ANSWER✔✔-Physical Layer
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2nd Layer of the OSI Model - CORRECT ANSWER✔✔-Data Link Layer
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3rd Layer of the OSI Model - CORRECT ANSWER✔✔-Network Layer
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4th Layer of the OSI Model - CORRECT ANSWER✔✔-Transport Layer
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5th Layer of the OSI Model - CORRECT ANSWER✔✔-Session Layer
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6th Layer of the OSI Model - CORRECT ANSWER✔✔-Presentation Layer
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, 7th Layer of the OSI Model - CORRECT ANSWER✔✔-Application Layer
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List all 7 layers of the OSI Model - CORRECT ANSWER✔✔-7. Application
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6. Presentation
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5. Session
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4. Transport
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3. Network
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2. Data Link
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1. Physical
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What is the physical layer of the OSI model responsible for? - CORRECT
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ANSWER✔✔-It is responsible for the transmission and receipt of the bit stream
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to/from nodes. It is solely concerned with signaling techniques (such as
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activating, maintaining, and terminating the physical circuit).
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Where is the physical layer of the OSI model defined? - CORRECT ANSWER✔✔-
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X.211


What is the data link layer of the OSI model responsible for? - CORRECT
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ANSWER✔✔-It is responsible for providing point-to-point validity of the data via
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point-to-point checking/correction, and it is responsible for the procedures and
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protocols for reliably operating the communication links.
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It has an independent address architecture from other layers.
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