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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 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?
Fiber-opticcable
Network
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.

2. Acknowledgments - sequencing - and flow control are characteristics of which OSI 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
Layer 4
84:D2:43:B3
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.

3. This device breaks up collision domains and broadcast domains.
Packet switching - Packet filtering - Internetwork communication - Path selection
Source and destination MAC address and FCS field
RJ45 UTP crossover cable.
Router

4. 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.
10101100.00010000.00010100.00110111
The Data Link layer frames packets received from the Network layer.
The Transport layer segments user data.

5. This device sends and receives information about the Network layer.
Transport
Segments - packets - frames - bits
Router
3 - 2 - 1 - none

6. What are two unique characteristics of half-duplex Ethernet when compared to full-duplex Ethernet?
RJ45 UTP crossover cable.
Hub and repeater
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
Source and destination MAC address and FCS field

7. 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.
Hub
Router

8. Which layer is represented by frames?
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.
To create more collision domains and to add more bandwidth for users.
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 frames packets received from the Network layer.

9. Which layer defines how data is formatted - presented - encoded - and converted for use on the network?
RJ45 UTP crossover cable.
The Presentation layer makes sure that data is in a readable format for the Application layer.
198.211.57.209
The Session layer sets up - maintains - and terminates sessions between applications.

10. Ethernet is defined at these layers.
Transport
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
Data Link & Physical
Data Link (LLC sublayer)

11. When data is encapsulated - which is the correct order?
Data - segment - packet - frame - bit
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.
Packet switching - Packet filtering - Internetwork communication - Path selection
Hub

12. This device can never run full duplex.
Transport
Hub
RJ45 UTP rolled cable.
Data Link & Physical

13. Which layer provides the physical transmission of the data and handles error notification - network topology - and flow control?
132.210.184.166
Data Link
Packet switching - Packet filtering - Internetwork communication - Path selection
The Data Link layer frames packets received from the Network layer.

14. 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.
48 bits (6 bytes)
Transport

15. Which layer provides logical addressing that routers will use for path determination?
3 - 2 - 1 - none
The Network layer provides logical addressing - typically IP addressing and routing.
The Presentation layer makes sure that data is in a readable format for the Application layer.
Bridge or switch

16. Which of the following are 3 common types of flow control?
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 the electrical and mechanical connections between devices.
Buffering - windowing - congestion avoidance
To provide a means for the receiver to govern the amount of data sent by the sender.

17. This device creates many smaller collision domains - but the network is still one large broadcast domain.
Switch or bridge
RJ45 UTP rolled cable.
Decrease the window size.
The Transport layer user virtual circuits to create a reliable connection between two hosts.

18. Put the following in order of encapsulation: Packets - Frames - Bits - Segments
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
Buffering - windowing - congestion avoidance
The Session layer creates sessions between different hosts' applications.

19. Which layer is represented by packets?
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 is responsible for the electrical and mechanical connections between devices.
The Network layer creates packets out of segments handed down from the Transport layer.
Router

20. You have the following binary number: 10110111 - What are the decimal and hexadecimal equivalents?
00001010.00001011.00001100.01100011
Transport
183/B7
Switch to switch - host to host - switch to host

21. Convert 11011000.00011011.00111101.01110110 to hexadecimal format.
Hub
The Session layer creates sessions between different hosts' applications.
D8:1B:3D:76
132.210.184.166

22. 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
Hub
Segments - packets - frames - bits
Decrease the window size.

23. Which layer is represented by segments?
The Transport layer user virtual circuits to create a reliable connection between two hosts.
The Transport layer segments user data.
Hub
Hub

24. This device creates one big collision domain and one large broadcast domain.
3 - 2 - 1 - none
Decrease the window size.
Hub
Transport

25. What type of RJ45 UTP cable do you use to connect a PC's COM port to a router or switch console port?
Data - segment - packet - frame - bit
The Network layer creates packets out of segments handed down from the Transport layer.
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).
RJ45 UTP rolled cable.

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

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27. What type of RJ45 UTP cable is used between switches?
Hub and repeater
Hub
Data Link
RJ45 UTP crossover cable.

28. Which layer is represented by bits?
The Presentation layer makes sure that data is in a readable format for the Application layer.
3 - 2 - 1 - none
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
204.51.170.85

29. Convert 11001010.11110101.10000011.11101011 to hexadecimal format.
84:D2:43:B3
To create more collision domains and to add more bandwidth for users.
Data Link
CA:F5:83:EB

30. What is the bit length and expression form of a MAC address?
00001010.00001011.00001100.01100011
48 bits (6 bytes)
Data Link (LLC sublayer)
The Physical layer is responsible for the electrical and mechanical connections between devices.

31. 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
132.210.184.166
3 - 2 - 1 - none

32. Convert 11000110.11010011.00111001.11010001 to decimal IP format.
198.211.57.209
00001010.00001011.00001100.01100011
Hub and repeater
Bridge or switch

33. 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
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).
Switch or bridge
Transport

34. Convert 10000100.11010010.01000011.10110011 to hexadecimal format.
84:D2:43:B3
Network
The Presentation layer makes sure that data is in a readable format for the Application layer.
Hub

35. What are two purposes for segmentation with a bridge?
To create more collision domains and to add more bandwidth for users.
00001010.00001011.00001100.01100011
198.211.57.209
Transport

36. Which layer combines bits into bytes and bytes into frames - uses MAC addressing - and provides error detection?
84:D2:43:B3
The Data Link layer is responsible for the framing of data packets.
183/B7
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.

37. 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.
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 & 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).

38. At which layer is routing implemented - enabling connections and path selection between two end systems?
The Network layer provides logical addressing - typically IP addressing and routing.
The Network layer provides routing through an internetwork and logical addressing.
Network
198.211.57.209

39. Convert 172.16.20.55 to binary format.
10101100.00010000.00010100.00110111
Bridge or switch
Hub
Switch or bridge

40. Which layer is responsible for converting data packets from the Data Link layer into electrical signals?
Router
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
D8:1B:3D:76

41. You want to implement a network medium that is not susceptible to EMI. Which type of cabling should you use?
3 - 2 - 1 - none
10101100.00010000.00010100.00110111
D8:1B:3D:76
Fiber-opticcable

42. Routers operate at layer __. LAN switches operate at layer __. Ethernet hubs operate at layer __. Word processing operates at layer __.
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.
48 bits (6 bytes)
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).

43. Which layer is responsible for creating - managing - and terminating sessions between applications?
The Transport layer segments user data.
00001010.00001011.00001100.01100011
The Session layer sets up - maintains - and terminates sessions between applications.
The Data Link layer is responsible for the framing of data packets.

44. This layer supports flow control and sequencing.
198.211.57.209
RJ45 UTP crossover cable.
The Data Link layer is responsible for the framing of data packets.
Transport

45. Name four router functions.
CA:F5:83:EB
Packet switching - Packet filtering - Internetwork communication - Path selection
Source and destination MAC address and FCS field
To provide a means for the receiver to govern the amount of data sent by the sender.

46. Convert 192.168.10.15 to binary format.
Fiber-opticcable
To create more collision domains and to add more bandwidth for users.
11000000.10101000.00001010.00001111
Router

47. Logical addressing is used at this layer.
Transport
To create more collision domains and to add more bandwidth for users.
Data Link (LLC sublayer)
Network

48. Which layer manages device addressing - tracks the location of devices on the network - and determines the best way to move data?
Network
84:D2:43:B3
The Transport layer segments user data.
Layer 4

49. Which two fields are contained within an IEEE Ethernet frame header?
To provide a means for the receiver to govern the amount of data sent by the sender.
132.210.184.166
Decrease the window size.
Source and destination MAC address and FCS field

50. What is the purpose of flow control?
Router
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).
3 - 2 - 1 - none
To provide a means for the receiver to govern the amount of data sent by the sender.