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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Are you a student struggling to understand the layers of the OSI model and their function? Perhaps you want to dive in deeper and see the actual information that might be found at each layer? In this CBT Nugget, Anthony Sequeira demonstrates just how fun and easy Wireshark can make this journey!