CNIT 344 Exam 1 Study Guide with
Correct Answers
Components of Communication - Answer-Message Source -> Encoder -> Transmitter -> Transmission
Medium "The Channel" -> Receiver -> Decoder -> Message Destination
What ISO Standard is the OSI Model? - Answer-ISO Standard 7498.
(I...
What is the physical layer of the OSI model responsible for? - 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? - Answer✔✔-X.211
What is the data link layer of the OSI model responsible for? - 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? - Answer✔✔-It converts data into frames.
What are the two sub-layers in the data link layer? - Answer✔✔-- MAC
- LLC
Where is the data link layer of the OSI model defined? - Answer✔✔-X.212
What is the network layer of the OSI model responsible for? - Answer✔✔-It enables internetworking, it
provides globally-unique addressing for every node in the network, and it determines routes between
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