Enjoy this challenge regarding the OSI model. This quiz maps to many different certification exams including, CCENT, CCNA, A+, N+, and many more! Good luck!
The OSI Model Challenge
Enjoy this challenge regarding the OSI model. This quiz maps to many different certification exams including, CCENT, CCNA, A+, N+, and many more!
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Question 1
Where are routers classically associated in the OSI model?
A
Physical
B
Data Link
C
Transport
D
Network
Question 1 Explanation:
The router is a Layer 3 (Network) device in the classic definition.
Question 2
What layer of the OSI model features the use of the reliable TCP approach and the connectionless UDP approach?
A
Network
B
Presentation
C
Transport
D
Session
Question 2 Explanation:
The Transport layer features the use of TCP or UDP to provide reliable or unreliable transport.
Question 3
What layer of the OSI model exists above the Transport layer?
A
Session
B
Network
C
Data Link
D
Physical
Question 3 Explanation:
The layers are Physical, Data Link, Network, Transport, Session, Presentation, Application. These are listed from bottom to top.
Question 4
What are the port numbers used by HTTP and HTTPS at the Transport layer? (Choose 2)
A
80
B
23
C
22
D
443
E
69
Question 4 Explanation:
HTTP and HTTPS use 80 and 443 for TCP port numbers.
Question 5
The process of adding information to data at each layer of the OSI model is known as what?
A
Delineation
B
Repudiation
C
Integrity checking
D
Authentication
E
Encapsulation
Question 5 Explanation:
Each layer encapsulates data with control information.
Question 6
What are two popular reasons to use a reference model like OSI? (Choose 2)
A
It ensures reliable transport under normal network conditions
B
It permits equipment from different vendors to communicate (typically)
C
It ensures that a single protocol is relied upon
D
It dictates how physical media must be deployed
E
It aids in network troubleshooting
Question 6 Explanation:
The use of a model can help multiple vendors design equipment that has a chance of working with other vendor equipment. Also, the use of a model can aid in troubleshooting.
Question 7
What is the PDU called at the Datalink Layer of the OSI model?
A
Packet
B
Frame
C
Bit
D
Segment
Question 8
The JPEG format is a classic example of the function at which layer of the OSI model?
A
Datalink
B
Physical
C
Application
D
Presentation
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