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Cisco Prep

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. Which layer provides the physical transmission of the data and handles error notification - network topology - and flow control?
Network
The Physical layer takes frames from the Data Link layer and encodes the 1s and 0s into a digital signal for transmission on the network medium.
The Application layer is responsible for finding the network resources broadcast from a server and adding flow control and error control (if the application developer chooses).
Data Link

2. How does a host on an Ethernet LAN know when to transmit after a collision has occurred? (Name two)
To create more collision domains and to add more bandwidth for users.
Packet switching - Packet filtering - Internetwork communication - Path selection
In a CSMA/CD collision domain - stations must wait until the media is not in use before transmitting. After a collision - all stations run a random backoff algorithm. When the backoff delay period has expired - all stations have equal priority to tra
Data Link (LLC sublayer)

3. This layer supports flow control and sequencing.
Transport
Bridge or switch
The Physical layer is responsible for the electrical and mechanical connections between devices.
D8:1B:3D:76

4. Convert 11011000.00011011.00111101.01110110 to hexadecimal format.
Data Link & Physical
To provide a means for the receiver to govern the amount of data sent by the sender.
Source and destination MAC address and FCS field
D8:1B:3D:76

5. Convert 11001100.00110011.10101010.01010101 to decimal IP format.
The Presentation layer makes sure that data is in a readable format for the Application layer.
Hub
204.51.170.85
48 bits (6 bytes)

6. A receiving host has failed to receive all of the segments that it should acknowledge. What can the host do to improve the reliability of this communication session?
Data Link (LLC sublayer)
Decrease the window size.
The Presentation layer makes sure that data is in a readable format for the Application layer.
Router

7. Which layer is represented by segments?
The Data Link layer is responsible for the framing of data packets.
Network
The Transport layer user virtual circuits to create a reliable connection between two hosts.
The Transport layer segments user data.

8. Which layer segments and reassembles data into a data stream?
Switch to switch - host to host - switch to host
Hub and repeater
198.211.57.209
Transport

9. Put the following in order of encapsulation: Packets - Frames - Bits - Segments
Bridge or switch
The Transport layer user virtual circuits to create a reliable connection between two hosts.
Segments - packets - frames - bits
The Data Link layer frames packets received from the Network layer.

10. What type of RJ45 UTP cable do you use to connect a PC's COM port to a router or switch console port?
The Session layer sets up - maintains - and terminates sessions between applications.
Router
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
RJ45 UTP rolled cable.

11. What is the bit length and expression form of a MAC address?
132.210.184.166
48 bits (6 bytes)
CA:F5:83:EB
Data Link (LLC sublayer)

12. Which layer ensures the trustworthy transmission of data across a physical link and is primarily concerned with physical addressing - line discipline - network topology - error notification - ordered delivery of frames - and flow control?
Packet switching - Packet filtering - Internetwork communication - Path selection
Transport
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
Data - segment - packet - frame - bit

13. Which layer defines how data is formatted - presented - encoded - and converted for use on the network?
The Presentation layer makes sure that data is in a readable format for the Application layer.
The Physical layer is responsible for the electrical and mechanical connections between devices.
To create more collision domains and to add more bandwidth for users.
The Network layer provides logical addressing - typically IP addressing and routing.

14. Which layer is represented by bits?
Network
The Data Link layer is responsible for the framing of data packets.
Data Link (LLC sublayer)
The Physical layer is responsible for transporting 1s and 0s in a digital signal.

15. Convert 192.168.10.15 to binary format.
84:D2:43:B3
11000000.10101000.00001010.00001111
10101100.00010000.00010100.00110111
It divides the network communication process into smaller and simpler components - thus aiding component development - design - and troubleshooting. It encourages industry standardization by defining what functions occur at each layer of the model.

16. Acknowledgments - sequencing - and flow control are characteristics of which OSI layer?
48 bits (6 bytes)
Layer 4
132.210.184.166
Transport

17. This device creates many smaller collision domains - but the network is still one large broadcast domain.
Switch or bridge
3 - 2 - 1 - none
48 bits (6 bytes)
The Physical layer is responsible for transporting 1s and 0s in a digital signal.

18. This device can never run full duplex.
Switch to switch - host to host - switch to host
Data Link
Hub
10101100.00010000.00010100.00110111

19. This device sends and receives information about the Network layer.
Data - segment - packet - frame - bit
Hub
Router
Data Link (LLC sublayer)

20. Which layer is represented by packets?
Switch or bridge
The Physical layer is responsible for the electrical and mechanical connections between devices.
RJ45 UTP crossover cable.
The Network layer creates packets out of segments handed down from the Transport layer.

21. Routers operate at layer __. LAN switches operate at layer __. Ethernet hubs operate at layer __. Word processing operates at layer __.
The Network layer provides logical addressing - typically IP addressing and routing.
The Network layer provides routing through an internetwork and logical addressing.
3 - 2 - 1 - none
RJ45 UTP rolled cable.

22. Convert 172.16.20.55 to binary format.
The Physical layer takes frames from the Data Link layer and encodes the 1s and 0s into a digital signal for transmission on the network medium.
The Network layer provides logical addressing - typically IP addressing and routing.
Network
10101100.00010000.00010100.00110111

23. Which layer 1 devices can be used to enlarge the area covered by a single LAN segment?
Hub and repeater
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
The Data Link layer frames packets received from the Network layer.
The Physical layer takes frames from the Data Link layer and encodes the 1s and 0s into a digital signal for transmission on the network medium.

24. This device can measure the distance to a remote network.
Router
The Physical layer is responsible for the electrical and mechanical connections between devices.
CA:F5:83:EB
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.

25. What are two unique characteristics of half-duplex Ethernet when compared to full-duplex Ethernet?
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
Layer 4
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Data - segment - packet - frame - bit

26. This device creates one big collision domain and one large broadcast domain.
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Hub
Data Link & Physical
The Presentation layer makes sure that data is in a readable format for the Application layer.

27. Name four router functions.
The Network layer provides routing through an internetwork and logical addressing.
84:D2:43:B3
204.51.170.85
Packet switching - Packet filtering - Internetwork communication - Path selection

28. Which layer provides logical addressing that routers will use for path determination?
The Network layer creates packets out of segments handed down from the Transport layer.
In a CSMA/CD collision domain - stations must wait until the media is not in use before transmitting. After a collision - all stations run a random backoff algorithm. When the backoff delay period has expired - all stations have equal priority to tra
The Network layer provides logical addressing - typically IP addressing and routing.
Network

29. Why does the data communication industry use the layered OSI reference model? (Name two)
It divides the network communication process into smaller and simpler components - thus aiding component development - design - and troubleshooting. It encourages industry standardization by defining what functions occur at each layer of the model.
D8:1B:3D:76
Decrease the window size.
198.211.57.209

30. Name three types of connections that can use full duplex.
Switch to switch - host to host - switch to host
198.211.57.209
The Physical layer takes frames from the Data Link layer and encodes the 1s and 0s into a digital signal for transmission on the network medium.
Hub

31. You want to implement a network medium that is not susceptible to EMI. Which type of cabling should you use?
183/B7
Fiber-opticcable
It divides the network communication process into smaller and simpler components - thus aiding component development - design - and troubleshooting. It encourages industry standardization by defining what functions occur at each layer of the model.
Transport

32. Logical addressing is used at this layer.
Network
Fiber-opticcable
In a CSMA/CD collision domain - stations must wait until the media is not in use before transmitting. After a collision - all stations run a random backoff algorithm. When the backoff delay period has expired - all stations have equal priority to tra
198.211.57.209

33. Segmentation of a data stream happens at which layer of the OSI model?
Transport
Source and destination MAC address and FCS field
3 - 2 - 1 - none
The Data Link layer frames packets received from the Network layer.

34. When data is encapsulated - which is the correct order?
Data - segment - packet - frame - bit
204.51.170.85
Segments - packets - frames - bits
183/B7

35. Which layer is responsible for keeping the data from different applications separate on the network?

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36. Which layer is responsible for converting data packets from the Data Link layer into electrical signals?
The Physical layer takes frames from the Data Link layer and encodes the 1s and 0s into a digital signal for transmission on the network medium.
Segments - packets - frames - bits
204.51.170.85
Source and destination MAC address and FCS field

37. Convert 10000100.11010010.01000011.10110011 to hexadecimal format.
Switch or bridge
84:D2:43:B3
Switch to switch - host to host - switch to host
11000000.10101000.00001010.00001111

38. Convert 11001010.11110101.10000011.11101011 to hexadecimal format.
CA:F5:83:EB
The Data Link layer is responsible for the framing of data packets.
RJ45 UTP crossover cable.
The Transport layer user virtual circuits to create a reliable connection between two hosts.

39. Which layer is used for reliable communication between end nodes over the network and provides mechanisms for establishing - maintaining - and terminating virtual circuits; transport-fault detection recovery; and controlling the flow of information?
3 - 2 - 1 - none
Layer 4
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
The Transport layer user virtual circuits to create a reliable connection between two hosts.

40. Convert 10000100.11010010.10111000.10100110 to decimal IP format.
It divides the network communication process into smaller and simpler components - thus aiding component development - design - and troubleshooting. It encourages industry standardization by defining what functions occur at each layer of the model.
132.210.184.166
11000000.10101000.00001010.00001111
The Physical layer is responsible for the electrical and mechanical connections between devices.

41. This device uses hardware addresses to filter a network.
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
Bridge or switch
Fiber-opticcable
Packet switching - Packet filtering - Internetwork communication - Path selection

42. Which layer chooses and determines the availability of communicating partners along with the resources necessary to make the connection - coordinates partnering applications - and forms a consensus on procedures for controlling data integrity and err
The Transport layer segments user data.
Network
The Application layer is responsible for finding the network resources broadcast from a server and adding flow control and error control (if the application developer chooses).
The Session layer sets up - maintains - and terminates sessions between applications.

43. This device breaks up collision domains and broadcast domains.
Segments - packets - frames - bits
The Application layer is responsible for finding the network resources broadcast from a server and adding flow control and error control (if the application developer chooses).
Router
The Session layer sets up - maintains - and terminates sessions between applications.

44. What is the purpose of flow control?
The Physical layer takes frames from the Data Link layer and encodes the 1s and 0s into a digital signal for transmission on the network medium.
Hub
To provide a means for the receiver to govern the amount of data sent by the sender.
The Physical layer is responsible for transporting 1s and 0s in a digital signal.

45. This layer uses service access points.
Router
Data Link (LLC sublayer)
The Physical layer takes frames from the Data Link layer and encodes the 1s and 0s into a digital signal for transmission on the network medium.
Data - segment - packet - frame - bit

46. Which layer is represented by frames?
To create more collision domains and to add more bandwidth for users.
Bridge or switch
132.210.184.166
The Data Link layer frames packets received from the Network layer.

47. You have the following binary number: 10110111 - What are the decimal and hexadecimal equivalents?
11000000.10101000.00001010.00001111
Hub
183/B7
Transport

48. Which two fields are contained within an IEEE Ethernet frame header?
Transport
Data Link
Source and destination MAC address and FCS field
48 bits (6 bytes)

49. What are two purposes for segmentation with a bridge?
Segments - packets - frames - bits
183/B7
To create more collision domains and to add more bandwidth for users.
48 bits (6 bytes)

50. At which layer is routing implemented - enabling connections and path selection between two end systems?
In a CSMA/CD collision domain - stations must wait until the media is not in use before transmitting. After a collision - all stations run a random backoff algorithm. When the backoff delay period has expired - all stations have equal priority to tra
Hub
The Network layer provides routing through an internetwork and logical addressing.
Network