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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 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 transporting 1s and 0s in a digital signal.
Hub and repeater
Router

2. Put the following in order of encapsulation: Packets - Frames - Bits - Segments
198.211.57.209
84:D2:43:B3
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).
Segments - packets - frames - bits

3. What type of RJ45 UTP cable is used between switches?
RJ45 UTP crossover cable.
Router
132.210.184.166
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

4. When data is encapsulated - which is the correct order?
Router
84:D2:43:B3
Data - segment - packet - frame - bit
204.51.170.85

5. Which layer 1 devices can be used to enlarge the area covered by a single LAN segment?
Hub and repeater
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 Link (LLC sublayer)
Hub

6. Convert 11001010.11110101.10000011.11101011 to hexadecimal format.
CA:F5:83:EB
Data Link & Physical
132.210.184.166
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).

7. Which of the following are 3 common types of flow control?
10101100.00010000.00010100.00110111
Decrease the window size.
Data - segment - packet - frame - bit
Buffering - windowing - congestion avoidance

8. Which layer segments and reassembles data into a data stream?
Bridge or switch
Transport
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 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.

9. Which layer provides logical addressing that routers will use for path determination?
The Physical layer is responsible for the electrical and mechanical connections between devices.
Router
Hub
The Network layer provides logical addressing - typically IP addressing and routing.

10. 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?
Decrease the window size.
Fiber-opticcable
Source and destination MAC address and FCS field
Data Link

11. Segmentation of a data stream happens at which layer of the OSI model?
Hub
Layer 4
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Transport

12. 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?
Router
The Transport layer user virtual circuits to create a reliable connection between two hosts.
3 - 2 - 1 - none
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.

13. You want to implement a network medium that is not susceptible to EMI. Which type of cabling should you use?
Network
To provide a means for the receiver to govern the amount of data sent by the sender.
11000000.10101000.00001010.00001111
Fiber-opticcable

14. Convert 10000100.11010010.10111000.10100110 to decimal IP format.
132.210.184.166
The Data Link layer frames packets received from the Network layer.
84:D2:43:B3
Data Link

15. Which layer manages device addressing - tracks the location of devices on the network - and determines the best way to move data?
Source and destination MAC address and FCS field
The Transport layer segments user data.
204.51.170.85
Network

16. Why does the data communication industry use the layered OSI reference model? (Name two)
Transport
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.
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).
84:D2:43:B3

17. Logical addressing is used at this layer.
RJ45 UTP rolled cable.
Buffering - windowing - congestion avoidance
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).
Network

18. Which layer combines bits into bytes and bytes into frames - uses MAC addressing - and provides error detection?
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 Data Link layer is responsible for the framing of data packets.
Network
Network

19. Ethernet is defined at these layers.
Data Link & Physical
Transport
The Network layer provides routing through an internetwork and logical addressing.
Hub

20. Convert 172.16.20.55 to binary format.
Hub
10101100.00010000.00010100.00110111
Router
204.51.170.85

21. This device uses hardware addresses to filter a network.
Bridge or switch
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.
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.
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).

22. This device creates many smaller collision domains - but the network is still one large broadcast domain.
183/B7
To provide a means for the receiver to govern the amount of data sent by the sender.
Packet switching - Packet filtering - Internetwork communication - Path selection
Switch or bridge

23. Which layer is represented by segments?
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 Transport layer segments user data.
84:D2:43:B3
Data Link

24. How does a host on an Ethernet LAN know when to transmit after a collision has occurred? (Name two)
The Data Link layer is responsible for the framing of data packets.
Decrease the window size.
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
48 bits (6 bytes)

25. Which layer is represented by frames?
The Network layer creates packets out of segments handed down from the Transport layer.
The Physical layer is responsible for the electrical and mechanical connections between devices.
The Data Link layer frames packets received from the Network layer.
RJ45 UTP rolled cable.

26. This layer creates a virtual circuit before transmitting between two end stations.
48 bits (6 bytes)
The Transport layer user virtual circuits to create a reliable connection between two hosts.
Transport
The Physical layer is responsible for the electrical and mechanical connections between devices.

27. 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 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 Network layer provides routing through an internetwork and logical addressing.
The Data Link layer is responsible for the framing of data packets.
Hub and repeater

28. Convert 192.168.10.15 to binary format.
Transport
The Data Link layer frames packets received from the Network layer.
Hub
11000000.10101000.00001010.00001111

29. This device creates one big collision domain and one large broadcast domain.
CA:F5:83:EB
Hub
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Transport

30. What are two purposes for segmentation with a bridge?
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 Session layer creates sessions between different hosts' applications.
To create more collision domains and to add more bandwidth for users.
CA:F5:83:EB

31. This layer uses service access points.
Router
Transport
Router
Data Link (LLC sublayer)

32. Which layer provides the physical transmission of the data and handles error notification - network topology - and flow control?
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
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).
Buffering - windowing - congestion avoidance
Data Link

33. You have the following binary number: 10110111 - What are the decimal and hexadecimal equivalents?
183/B7
CA:F5:83:EB
RJ45 UTP crossover cable.
Data Link

34. What are two unique characteristics of half-duplex Ethernet when compared to full-duplex Ethernet?
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 Physical layer is responsible for the electrical and mechanical connections between devices.
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
Hub

35. This device can never run full duplex.
Router
Data - segment - packet - frame - bit
Hub
183/B7

36. Acknowledgments - sequencing - and flow control are characteristics of which OSI layer?
Layer 4
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.
D8:1B:3D:76
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).

37. Convert 11011000.00011011.00111101.01110110 to hexadecimal format.
Switch or bridge
D8:1B:3D:76
RJ45 UTP rolled cable.
The Transport layer user virtual circuits to create a reliable connection between two hosts.

38. Convert 11000110.11010011.00111001.11010001 to decimal IP format.
Buffering - windowing - congestion avoidance
Router
3 - 2 - 1 - none
198.211.57.209

39. Which layer is responsible for converting data packets from the Data Link layer into electrical signals?
Data Link
The Network layer provides logical addressing - typically IP addressing and routing.
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.
CA:F5:83:EB

40. Convert 10.11.12.99 to binary format.
204.51.170.85
00001010.00001011.00001100.01100011
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
11000000.10101000.00001010.00001111

41. This device breaks up collision domains and broadcast domains.
Switch or bridge
84:D2:43:B3
Router
183/B7

42. Which layer is represented by bits?
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Packet switching - Packet filtering - Internetwork communication - Path selection
The Presentation layer makes sure that data is in a readable format for the Application layer.
The Transport layer user virtual circuits to create a reliable connection between two hosts.

43. Convert 10000100.11010010.01000011.10110011 to hexadecimal format.
CA:F5:83:EB
Transport
The Transport layer user virtual circuits to create a reliable connection between two hosts.
84:D2:43:B3

44. 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
D8:1B:3D:76
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
The Presentation layer makes sure that data is in a readable format for the Application layer.

45. Which two fields are contained within an IEEE Ethernet frame header?
The Data Link layer is responsible for the framing of data packets.
Source and destination MAC address and FCS field
Packet switching - Packet filtering - Internetwork communication - Path selection
The Physical layer is responsible for transporting 1s and 0s in a digital signal.

46. This device can measure the distance to a remote network.
The Session layer sets up - maintains - and terminates sessions between applications.
Hub
Hub and repeater
Router

47. Which layer is responsible for creating - managing - and terminating sessions between applications?
Switch or bridge
RJ45 UTP rolled cable.
The Session layer sets up - maintains - and terminates sessions between applications.
Layer 4

48. At which layer is routing implemented - enabling connections and path selection between two end systems?
RJ45 UTP crossover cable.
The Presentation layer makes sure that data is in a readable format for the Application layer.
The Transport layer user virtual circuits to create a reliable connection between two hosts.
The Network layer provides routing through an internetwork and logical addressing.

49. Which layer is represented by packets?
00001010.00001011.00001100.01100011
48 bits (6 bytes)
Transport
The Network layer creates packets out of segments handed down from the Transport layer.

50. This layer supports flow control and sequencing.
Transport
The Transport layer segments user data.
Hub and repeater
The Data Link layer is responsible for the framing of data packets.