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Cisco Certification OSI Model

Instructions:

Answer 50 questions in 15 minutes.
If you are not ready to take this test, you can study here.
Match each statement with the correct term.
Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.

1. What are some Physical Layer Protocols and Standards?
Point to Point
IEA RS232 - V.35. Cat 5 - RJ45
Physical Layer
Asynchronous Transfer Mode

2. How bits are in a MAC address?
802.2 - Logical Link Control - 802.3 - Ethernet - 802.5 - Token Ring - 802.11 - Wireless
48 Bits
Transport layer.
Physical Layer

3. What is the difference between the TCP and UDP protocols?
When require to communicate between different vendors across the same serial link.
Open Source Interconnect
TCP: Connection oriented - High reliability - High overhead - UDP: Conectionless - Low reliability - Low overhead
Layer 2 - The Data Link layer.

4. What are are the 'Sub Layers' of the 'Data Link' Layer?
MAC SubLayer - LLC SubLayer
High-Level Data Link Control
The hardware that implements the MAC.
Transport layer.

5. What is layer 4 of the OSI model?
Provides a standard for hardware development - Allows modular SW development - Facilitates rapid development of new technology
Transport layer.
ATM is a standard switching technique - designed to unify telecommunication and computer networks. It uses asynchronous time-division multiplexing and it encodes data into small - fixed-sized cells.
Layer 2 - The Data Link layer.

6. What is the 'medium access controller'?
The hardware that implements the MAC.
48 Bits
Network layer.
Layer 2 - The Data Link layer.

7. What are other names for MAC address?
Hardware address - Ethernet address - BIA - Burned in Address
When require to communicate between different vendors across the same serial link.
Session layer.
High Level Data Link Control

8. What is the Physical Layer responsible for?

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9. What is layer 6 of the OSI model?
Presentation layer.
Point to Point
Wide Area Network
Provides a standard for hardware development - Allows modular SW development - Facilitates rapid development of new technology

10. How many Layers in the OSI Model?
Seven
HDLC - High Level Data Link Control - PPP - Point to Point - Frame Relay - ISDN - ATM
OSI model classifies and organizes the tasks that hosts perform to prepare data for transport across the network. It most widely used method for understanding and talking about network communications
Presentation layer.

11. What is the 'LLC Layer' responsible for?
It provides multiplexing mechanisms that make it possible for several network protocols (IP - IPX - Decnet and Appletalk) to coexist within a multipoint network and to be transported over the same network media - and can also provide flow control and
Physical - Data Link. Network - Transport
Local Area Network
The third layer is the networking layer which is responsible for routing packets across the network to ther=ir destination

12. In an OSI context What is considered 'media'?
48 Bits
The hardware that implements the MAC.
Cables - Pins - Electrical Signals
ISDN - Integrated Services Digital Network

13. What is layer 1 of the OSI model?
High-Level Data Link Control
Physical layer.
Layer 1 Protocol having to do with serial communication
Local Area Network

14. What does the acronym 'HDLC' stand for?
High-Level Data Link Control
Wide area network technology that specifies the physical and logical link layers of digital telecommunications channels using a packet switching methodology
Data Link layer.
Cables - Pins - Electrical Signals

15. What is layer 5 of the OSI model?
Session layer.
Combining 'Bits' into 'Bytes' - & 'Bytes' into 'Frames' - provides the functional and procedural means to transfer data between network entities and might provide the means to detect and possibly correct errors that may occur in the physical layer.
ISDN - Integrated Services Digital Network
Provide a model to discribe how data moves from source device to destination device.

16. What does the acronym 'ISDN' stand for?
Media Access Control
The media access control (MAC) data communication protocol sub-layer - is a sublayer of the data link layer specified in the seven-layer OSI model (layer 2). It provides addressing and channel access control mechanisms that make it possible for sever
International Standards Organization
ISDN - Integrated Services Digital Network

17. What does the acronym 'WAN' stand for?
Physical Layer
802.2 - Logical Link Control - 802.3 - Ethernet - 802.5 - Token Ring - 802.11 - Wireless
The third layer is the networking layer which is responsible for routing packets across the network to ther=ir destination
Wide Area Network

18. What is HDLC?
TCP: Connection oriented - High reliability - High overhead - UDP: Conectionless - Low reliability - Low overhead
Media Access Control
It is a bit-oriented synchronous data link layer protocol developed by the International Organization for Standardization (ISO). The original ISO standards for HDLC are: ISO 3309
MAC SubLayer - LLC SubLayer

19. What are the first 4 layers of the OSI model called?
Data Flow layers.
High Level Data Link Control
Asynchronous Transfer Mode
Application layer.

20. What is ATM?
802.2 - Logical Link Control - 802.3 - Ethernet - 802.5 - Token Ring - 802.11 - Wireless
Application layer.
ATM is a standard switching technique - designed to unify telecommunication and computer networks. It uses asynchronous time-division multiplexing and it encodes data into small - fixed-sized cells.
Logicial Link Control

21. What does the acronym 'LAN' stand for?
Moving 'Bits' from 'Source' device to 'Destination' device across 'Media'.
Open Source Interconnect
Cables - Pins - Electrical Signals
Local Area Network

22. What are some examples of 'LAN' side Datalink Layer Protocols and Standards?
802.2 - Logical Link Control - 802.3 - Ethernet - 802.5 - Token Ring - 802.11 - Wireless
Logicial Link Control
Wide area network technology that specifies the physical and logical link layers of digital telecommunications channels using a packet switching methodology
All People Seem To Need Data Processing (Application - Presentation - Session - Transport - Network - Data Link - Physical)

23. What are considered the Data Flow layers?
OSI model classifies and organizes the tasks that hosts perform to prepare data for transport across the network. It most widely used method for understanding and talking about network communications
Application layer.
The media access control (MAC) data communication protocol sub-layer - is a sublayer of the data link layer specified in the seven-layer OSI model (layer 2). It provides addressing and channel access control mechanisms that make it possible for sever
Physical - Data Link. Network - Transport

24. What does the acronym 'LLC' stand for?
Presentation layer.
802.2 - Logical Link Control - 802.3 - Ethernet - 802.5 - Token Ring - 802.11 - Wireless
Logicial Link Control
Physical layer.

25. What does the acronym 'ATM' stand for?
Asynchronous Transfer Mode
Application: JPEG - BMP - TIFF - PICT - MPEG - WMV - AVI - ASCII - EBCDIC - MIDI - WAV - Session: Network File System (NFS) - Apple Session Protocol (ASP) - Structured Query Language (SQL) - Remote procedure call (RPC) - X Window
Provide a model to discribe how data moves from source device to destination device.
Media Access Control

26. What protocols correspond to the Presentation and Session layers?
Application: JPEG - BMP - TIFF - PICT - MPEG - WMV - AVI - ASCII - EBCDIC - MIDI - WAV - Session: Network File System (NFS) - Apple Session Protocol (ASP) - Structured Query Language (SQL) - Remote procedure call (RPC) - X Window
Physical layer.
Application layer.
MAC SubLayer - LLC SubLayer

27. What does the acronym 'PPPoA' stand for?
ISDN - Integrated Services Digital Network
Point-to-Point Protocol over ATM
The media access control (MAC) data communication protocol sub-layer - is a sublayer of the data link layer specified in the seven-layer OSI model (layer 2). It provides addressing and channel access control mechanisms that make it possible for sever
Transport layer.

28. What does the acronym 'MAC' stand for?
Media Access Control
Combining 'Bits' into 'Bytes' - & 'Bytes' into 'Frames' - provides the functional and procedural means to transfer data between network entities and might provide the means to detect and possibly correct errors that may occur in the physical layer.
OSI model classifies and organizes the tasks that hosts perform to prepare data for transport across the network. It most widely used method for understanding and talking about network communications
Physical Layer

29. What does the acronym 'OSI' stand for?
Open Source Interconnect
Media Access Control
Point to Point
IEA RS232 - V.35. Cat 5 - RJ45

30. What does the acronym default 'HDLC' protocol stand for?
Hardware address - Ethernet address - BIA - Burned in Address
Physical - Data Link. Network - Transport
The media access control (MAC) data communication protocol sub-layer - is a sublayer of the data link layer specified in the seven-layer OSI model (layer 2). It provides addressing and channel access control mechanisms that make it possible for sever
High Level Data Link Control

31. When would the PPP be used?
Please Do Not Throw Sausage Pizza Away (Physical - Data Link - Network - Transport - Session - Presentation - Application)
Moving 'Bits' from 'Source' device to 'Destination' device across 'Media'.
Data Link layer.
When require to communicate between different vendors across the same serial link.

32. What is the OSI model and why is it important in understanding networking?
High Level Data Link Control
TCP: Connection oriented - High reliability - High overhead - UDP: Conectionless - Low reliability - Low overhead
48 Bits
OSI model classifies and organizes the tasks that hosts perform to prepare data for transport across the network. It most widely used method for understanding and talking about network communications

33. OSI layers are...
Theoretical
ISDN - Integrated Services Digital Network
Please Do Not Throw Sausage Pizza Away (Physical - Data Link - Network - Transport - Session - Presentation - Application)
Media Access Control

34. What is the EIA/TIA 232 protocol concerned with?
Open Source Interconnect
HDLC - High Level Data Link Control - PPP - Point to Point - Frame Relay - ISDN - ATM
Network layer.
Layer 1 Protocol having to do with serial communication

35. What is the purpose of the OSI Model?
OSI model classifies and organizes the tasks that hosts perform to prepare data for transport across the network. It most widely used method for understanding and talking about network communications
Physical layer.
Network layer.
Provide a model to discribe how data moves from source device to destination device.

36. What does the acronym 'ISO' stand for?
International Standards Organization
802.2 - Logical Link Control - 802.3 - Ethernet - 802.5 - Token Ring - 802.11 - Wireless
ISDN - Integrated Services Digital Network
Logicial Link Control

37. What is the MAC address?
48 bit address used to identify networking cards and appliances
Presentation layer.
Asynchronous Transfer Mode
Media Access Control

38. What is the 'MAC Layer' responsible for?
Data Link layer.
Provides a standard for hardware development - Allows modular SW development - Facilitates rapid development of new technology
The media access control (MAC) data communication protocol sub-layer - is a sublayer of the data link layer specified in the seven-layer OSI model (layer 2). It provides addressing and channel access control mechanisms that make it possible for sever
The hardware that implements the MAC.

39. What is layer 3 of the OSI model?
ATM is a standard switching technique - designed to unify telecommunication and computer networks. It uses asynchronous time-division multiplexing and it encodes data into small - fixed-sized cells.
Network layer.
It provides multiplexing mechanisms that make it possible for several network protocols (IP - IPX - Decnet and Appletalk) to coexist within a multipoint network and to be transported over the same network media - and can also provide flow control and
Provide a model to discribe how data moves from source device to destination device.

40. Frame Relay
Wide area network technology that specifies the physical and logical link layers of digital telecommunications channels using a packet switching methodology
Presentation layer.
Physical layer.
Physical Layer

41. What is layer 7 of the OSI model?
Wide Area Network
Presentation layer.
When require to communicate between different vendors across the same serial link.
Application layer.

42. What is the 'Data Link Layer' responsible for?

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43. What are the advantages of the OSI model?
High-Level Data Link Control
Application layer.
Provides a standard for hardware development - Allows modular SW development - Facilitates rapid development of new technology
Moving 'Bits' from 'Source' device to 'Destination' device across 'Media'.

44. What is the Mnemonic phrase for remembering OSI layers ordered 7 to 1?
Logicial Link Control
Application layer.
All People Seem To Need Data Processing (Application - Presentation - Session - Transport - Network - Data Link - Physical)
ISDN - Integrated Services Digital Network

45. Which OSI model layer is concerned with MAC addresses?
Provide a model to discribe how data moves from source device to destination device.
MAC SubLayer - LLC SubLayer
Physical layer.
Layer 2 - The Data Link layer.

46. What does the acronym 'PPP' stand for?
Wide Area Network
Point to Point
Media Access Control
Data Flow layers.

47. What is layer 2 of the OSI model?
The media access control (MAC) data communication protocol sub-layer - is a sublayer of the data link layer specified in the seven-layer OSI model (layer 2). It provides addressing and channel access control mechanisms that make it possible for sever
Point to Point
Data Link layer.
OSI model classifies and organizes the tasks that hosts perform to prepare data for transport across the network. It most widely used method for understanding and talking about network communications

48. Where does troublingshooting alway start?
Cables - Pins - Electrical Signals
It is a bit-oriented synchronous data link layer protocol developed by the International Organization for Standardization (ISO). The original ISO standards for HDLC are: ISO 3309
Physical Layer
The media access control (MAC) data communication protocol sub-layer - is a sublayer of the data link layer specified in the seven-layer OSI model (layer 2). It provides addressing and channel access control mechanisms that make it possible for sever

49. How does the third OSI model layer relate to administering routers?
Point-to-Point Protocol over ATM
The third layer is the networking layer which is responsible for routing packets across the network to ther=ir destination
Asynchronous Transfer Mode
Physical layer.

50. What are some examples of 'WAN' side 'Encapsulation' type Datalink Layer Protocols and Standards?
All People Seem To Need Data Processing (Application - Presentation - Session - Transport - Network - Data Link - Physical)
Physical - Data Link. Network - Transport
HDLC - High Level Data Link Control - PPP - Point to Point - Frame Relay - ISDN - ATM
Theoretical