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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. 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?
Switch or bridge
Router
Decrease the window size.
Bridge or switch

2. Which layer is represented by frames?
Hub
The Network layer creates packets out of segments handed down from the Transport layer.
183/B7
The Data Link layer frames packets received from the Network layer.

3. What type of RJ45 UTP cable do you use to connect a PC's COM port to a router or switch console port?
Network
Source and destination MAC address and FCS field
RJ45 UTP rolled cable.
Transport

4. Convert 10.11.12.99 to binary format.
84:D2:43:B3
Router
10101100.00010000.00010100.00110111
00001010.00001011.00001100.01100011

5. Which layer is represented by bits?
204.51.170.85
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 Physical layer is responsible for transporting 1s and 0s in a digital signal.
The Session layer sets up - maintains - and terminates sessions between applications.

6. Which two fields are contained within an IEEE Ethernet frame header?
Source and destination MAC address and FCS field
Buffering - windowing - congestion avoidance
Fiber-opticcable
To provide a means for the receiver to govern the amount of data sent by the sender.

7. This layer creates a virtual circuit before transmitting between two end stations.
Data Link (LLC sublayer)
Transport
Source and destination MAC address and FCS field
The Data Link layer is responsible for the framing of data packets.

8. What is the bit length and expression form of a MAC address?
The Session layer creates sessions between different hosts' applications.
11000000.10101000.00001010.00001111
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
48 bits (6 bytes)

9. Convert 192.168.10.15 to binary format.
Network
11000000.10101000.00001010.00001111
10101100.00010000.00010100.00110111
Decrease the window size.

10. Put the following in order of encapsulation: Packets - Frames - Bits - Segments
Hub
Segments - packets - frames - bits
The Transport layer segments user data.
Router

11. Convert 11011000.00011011.00111101.01110110 to hexadecimal format.
The Data Link layer frames packets received from the Network layer.
Router
CA:F5:83:EB
D8:1B:3D:76

12. This device creates many smaller collision domains - but the network is still one large broadcast domain.
The Session layer sets up - maintains - and terminates sessions between applications.
Switch or bridge
Switch to switch - host to host - switch to host
Buffering - windowing - congestion avoidance

13. This device creates one big collision domain and one large broadcast domain.
Data - segment - packet - frame - bit
Hub
Transport
Bridge or switch

14. How does a host on an Ethernet LAN know when to transmit after a collision has occurred? (Name two)
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
Bridge or switch
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
84:D2:43:B3

15. Which layer is responsible for creating - managing - and terminating sessions between applications?
D8:1B:3D:76
Source and destination MAC address and FCS field
The Session layer sets up - maintains - and terminates sessions between applications.
RJ45 UTP rolled cable.

16. This device breaks up collision domains and broadcast domains.
Decrease the window size.
The Session layer creates sessions between different hosts' applications.
Router
204.51.170.85

17. Which layer is represented by segments?
3 - 2 - 1 - none
Switch to switch - host to host - switch to host
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
The Transport layer segments user data.

18. Acknowledgments - sequencing - and flow control are characteristics of which OSI layer?
Packet switching - Packet filtering - Internetwork communication - Path selection
84:D2:43:B3
The Transport layer user virtual circuits to create a reliable connection between two hosts.
Layer 4

19. What type of RJ45 UTP cable is used between switches?
RJ45 UTP crossover cable.
The Network layer creates packets out of segments handed down from the Transport layer.
3 - 2 - 1 - none
The Data Link layer is responsible for the framing of data packets.

20. This layer supports flow control and sequencing.
183/B7
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
Transport
Hub

21. Which layer 1 devices can be used to enlarge the area covered by a single LAN segment?
Hub and repeater
To create more collision domains and to add more bandwidth for users.
84:D2:43:B3
Data - segment - packet - frame - bit

22. This device can never run full duplex.
Data Link
Hub
CA:F5:83:EB
Transport

23. Which layer is represented by packets?
11000000.10101000.00001010.00001111
183/B7
The Data Link layer is responsible for the framing of data packets.
The Network layer creates packets out of segments handed down from the Transport layer.

24. Convert 11000110.11010011.00111001.11010001 to decimal IP format.
198.211.57.209
Bridge or switch
Data Link & Physical
Data - segment - packet - frame - bit

25. This layer uses service access points.
Data Link
Switch or bridge
Data Link (LLC sublayer)
Router

26. Convert 11001010.11110101.10000011.11101011 to hexadecimal format.
Data Link & Physical
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).
CA:F5:83:EB
Hub and repeater

27. 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?
The Transport layer user virtual circuits to create a reliable connection between two hosts.
CA:F5:83:EB
The Transport layer segments user data.
204.51.170.85

28. Which layer specifies voltage - wire speed - and pinout cables and moves bits between devices?
The Physical layer is responsible for the electrical and mechanical connections between devices.
Bridge or switch
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

29. You have the following binary number: 10110111 - What are the decimal and hexadecimal equivalents?
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.
Switch to switch - host to host - switch to host
183/B7
To provide a means for the receiver to govern the amount of data sent by the sender.

30. Convert 10000100.11010010.10111000.10100110 to decimal IP format.
11000000.10101000.00001010.00001111
Data Link (LLC sublayer)
132.210.184.166
The Network layer provides logical addressing - typically IP addressing and routing.

31. Convert 11001100.00110011.10101010.01010101 to decimal IP format.
The Transport layer segments user data.
204.51.170.85
D8:1B:3D:76
The Network layer creates packets out of segments handed down from the Transport layer.

32. You want to implement a network medium that is not susceptible to EMI. Which type of cabling should you use?
Packet switching - Packet filtering - Internetwork communication - Path selection
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
Fiber-opticcable
84:D2:43:B3

33. At which layer is routing implemented - enabling connections and path selection between two end systems?
10101100.00010000.00010100.00110111
Hub
To provide a means for the receiver to govern the amount of data sent by the sender.
The Network layer provides routing through an internetwork and logical addressing.

34. Segmentation of a data stream happens at which layer of the OSI model?
Buffering - windowing - congestion avoidance
183/B7
Transport
Fiber-opticcable

35. Routers operate at layer __. LAN switches operate at layer __. Ethernet hubs operate at layer __. Word processing operates at layer __.
The Physical layer is responsible for the electrical and mechanical connections between devices.
The Presentation layer makes sure that data is in a readable format for the Application layer.
3 - 2 - 1 - none
Segments - packets - frames - bits

36. Which layer provides the physical transmission of the data and handles error notification - network topology - and flow control?
00001010.00001011.00001100.01100011
Switch to switch - host to host - switch to host
The Network layer creates packets out of segments handed down from the Transport layer.
Data Link

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

38. Which layer segments and reassembles data into a data stream?
132.210.184.166
Switch to switch - host to host - switch to host
Router
Transport

39. Name four router functions.
Packet switching - Packet filtering - Internetwork communication - Path selection
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).
CA:F5:83:EB

40. Which layer is responsible for converting data packets from the Data Link layer into electrical signals?
204.51.170.85
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
The Network layer creates packets out of segments handed down from the Transport layer.

41. Convert 10000100.11010010.01000011.10110011 to hexadecimal format.
To provide a means for the receiver to govern the amount of data sent by the sender.
The Network layer provides routing through an internetwork and logical addressing.
84:D2:43:B3
The Transport layer user virtual circuits to create a reliable connection between two hosts.

42. Why does the data communication industry use the layered OSI reference model? (Name two)
Switch or bridge
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.
204.51.170.85
The Data Link layer frames packets received from the Network layer.

43. This device sends and receives information about the Network layer.
Router
Data - segment - packet - frame - bit
Hub and repeater
CA:F5:83:EB

44. What are two purposes for segmentation with a bridge?
The Network layer provides routing through an internetwork and logical addressing.
Data Link & Physical
To create more collision domains and to add more bandwidth for users.
The Presentation layer makes sure that data is in a readable format for the Application layer.

45. What are two unique characteristics of half-duplex Ethernet when compared to full-duplex Ethernet?
48 bits (6 bytes)
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
The Session layer creates sessions between different hosts' applications.
D8:1B:3D:76

46. Which layer provides logical addressing that routers will use for path determination?
Segments - packets - frames - bits
The Network layer provides logical addressing - typically IP addressing and routing.
The Network layer creates packets out of segments handed down from the Transport layer.
The Physical layer is responsible for transporting 1s and 0s in a digital signal.

47. 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.
Transport
48 bits (6 bytes)
D8:1B:3D:76

48. This device can measure the distance to a remote network.
Router
To provide a means for the receiver to govern the amount of data sent by the sender.
Buffering - windowing - congestion avoidance
The Transport layer segments user data.

49. 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?
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
Transport
The Presentation layer makes sure that data is in a readable format for the Application layer.
Packet switching - Packet filtering - Internetwork communication - Path selection

50. What is the purpose of flow control?
Data Link (LLC sublayer)
To provide a means for the receiver to govern the amount of data sent by the sender.
10101100.00010000.00010100.00110111
Bridge or switch