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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. Ethernet is defined at these layers.
Data Link & Physical
Data Link (LLC sublayer)
Data Link
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.

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

3. Which layer is responsible for creating - managing - and terminating sessions between applications?
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.
Hub
The Network layer provides routing through an internetwork and logical addressing.

4. Why does the data communication industry use the layered OSI reference model? (Name two)
Hub
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
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.

5. This device creates many smaller collision domains - but the network is still one large broadcast domain.
Switch or bridge
The Network layer creates packets out of segments handed down from the Transport layer.
The Presentation layer makes sure that data is in a readable format for the Application layer.
84:D2:43:B3

6. Name three types of connections that can use full duplex.
Network
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 and repeater
Switch to switch - host to host - switch to host

7. Convert 11011000.00011011.00111101.01110110 to hexadecimal format.
Network
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.
D8:1B:3D:76

8. Convert 11001010.11110101.10000011.11101011 to hexadecimal format.
CA:F5:83:EB
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Transport
204.51.170.85

9. This layer supports flow control and sequencing.
Transport
3 - 2 - 1 - none
Fiber-opticcable
Source and destination MAC address and FCS field

10. This layer creates a virtual circuit before transmitting between two end stations.
Transport
Segments - packets - frames - bits
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
The Transport layer segments user data.

11. What type of RJ45 UTP cable do you use to connect a PC's COM port to a router or switch console port?
Transport
RJ45 UTP rolled cable.
Hub
The Network layer provides logical addressing - typically IP addressing and routing.

12. Which layer specifies voltage - wire speed - and pinout cables and moves bits between devices?
Data Link (LLC sublayer)
The Physical layer is responsible for the electrical and mechanical connections between devices.
The Transport layer segments user data.
CA:F5:83:EB

13. What is the bit length and expression form of a MAC address?
Source and destination MAC address and FCS field
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)
Router

14. Which layer is represented by bits?
RJ45 UTP rolled cable.
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Bridge or switch
Network

15. Which layer manages device addressing - tracks the location of devices on the network - and determines the best way to move data?
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.
Network
The Session layer sets up - maintains - and terminates sessions between applications.

16. Convert 172.16.20.55 to binary format.
84:D2:43:B3
Switch or bridge
10101100.00010000.00010100.00110111
The Network layer provides logical addressing - typically IP addressing and routing.

17. Which layer is represented by packets?
10101100.00010000.00010100.00110111
The Network layer creates packets out of segments handed down from the Transport layer.
Data Link & Physical
Network

18. What type of RJ45 UTP cable is used between switches?
The Transport layer user virtual circuits to create a reliable connection between two hosts.
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.
RJ45 UTP crossover cable.

19. 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?
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.
Switch or bridge
Layer 4

20. Convert 11001100.00110011.10101010.01010101 to decimal IP format.
The Data Link layer is responsible for the framing of data packets.
The Transport layer user virtual circuits to create a reliable connection between two hosts.
204.51.170.85
Buffering - windowing - congestion avoidance

21. This device sends and receives information about the Network layer.
Router
Data Link
The Presentation layer makes sure that data is in a readable format for the Application 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.

22. Convert 10000100.11010010.01000011.10110011 to hexadecimal format.
The Transport layer segments user data.
Network
183/B7
84:D2:43:B3

23. 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?
CA:F5:83:EB
Decrease the window size.
Bridge or switch
198.211.57.209

24. Which layer is represented by segments?
Transport
The Transport layer user virtual circuits to create a reliable connection between two hosts.
The Transport layer segments user data.
Layer 4

25. Which layer segments and reassembles data into a data stream?
Transport
To provide a means for the receiver to govern the amount of data sent by the sender.
84:D2:43:B3
11000000.10101000.00001010.00001111

26. What are two purposes for segmentation with a bridge?
The Physical layer is responsible for the electrical and mechanical connections between devices.
00001010.00001011.00001100.01100011
To create more collision domains and to add more bandwidth for users.
Data Link & Physical

27. Put the following in order of encapsulation: Packets - Frames - Bits - Segments
Switch or bridge
Segments - packets - frames - bits
10101100.00010000.00010100.00110111
48 bits (6 bytes)

28. Convert 10.11.12.99 to binary format.
48 bits (6 bytes)
00001010.00001011.00001100.01100011
The Session layer sets up - maintains - and terminates sessions between applications.
Data - segment - packet - frame - bit

29. This device can never run full duplex.
Router
Hub
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
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).

30. Which layer provides logical addressing that routers will use for path determination?
Transport
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
The Network layer provides logical addressing - typically IP addressing and routing.
3 - 2 - 1 - none

31. 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.
Packet switching - Packet filtering - Internetwork communication - Path selection
Decrease the window size.
11000000.10101000.00001010.00001111

32. 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.
Decrease the window size.
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).

33. Convert 11000110.11010011.00111001.11010001 to decimal IP format.
The Network layer creates packets out of segments handed down from the Transport layer.
198.211.57.209
RJ45 UTP crossover cable.
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

34. Convert 10000100.11010010.10111000.10100110 to decimal IP format.
The Session layer sets up - maintains - and terminates sessions between applications.
132.210.184.166
Transport
Router

35. What is the purpose of flow control?
RJ45 UTP rolled cable.
183/B7
To provide a means for the receiver to govern the amount of data sent by the sender.
The Network layer provides logical addressing - typically IP addressing and routing.

36. You have the following binary number: 10110111 - What are the decimal and hexadecimal equivalents?
Network
Hub
Data Link
183/B7

37. Which layer provides the physical transmission of the data and handles error notification - network topology - and flow control?
The Data Link layer is responsible for the framing of data packets.
Data Link
RJ45 UTP rolled cable.
Network

38. 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?
204.51.170.85
Decrease the window size.
Source and destination MAC address and FCS field
The Transport layer user virtual circuits to create a reliable connection between two hosts.

39. Which layer combines bits into bytes and bytes into frames - uses MAC addressing - and provides error detection?
Network
The Data Link layer is responsible for the framing of data packets.
Hub
3 - 2 - 1 - none

40. Which of the following are 3 common types of flow control?
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
RJ45 UTP rolled cable.
Buffering - windowing - congestion avoidance
Data - segment - packet - frame - bit

41. This device creates one big collision domain and one large broadcast domain.
00001010.00001011.00001100.01100011
Network
Hub
The Presentation layer makes sure that data is in a readable format for the Application layer.

42. Which two fields are contained within an IEEE Ethernet frame header?
Source and destination MAC address and FCS field
The Physical layer is responsible for the electrical and mechanical connections between devices.
The Session layer creates sessions between different hosts' applications.
3 - 2 - 1 - none

43. What are two unique characteristics of half-duplex Ethernet when compared to full-duplex Ethernet?
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).
48 bits (6 bytes)
84:D2:43:B3
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.

44. How does a host on an Ethernet LAN know when to transmit after a collision has occurred? (Name two)
The Physical layer is responsible for the electrical and mechanical connections between devices.
The Transport layer user virtual circuits to create a reliable connection between two hosts.
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 Presentation layer makes sure that data is in a readable format for the Application layer.

45. You want to implement a network medium that is not susceptible to EMI. Which type of cabling should you use?
Hub
Bridge or switch
The Presentation layer makes sure that data is in a readable format for the Application layer.
Fiber-opticcable

46. 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.
The Physical layer is responsible for the electrical and mechanical connections between devices.
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).

47. Acknowledgments - sequencing - and flow control are characteristics of which OSI layer?
The Network layer provides routing through an internetwork and logical addressing.
Layer 4
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
132.210.184.166

48. This device breaks up collision domains and broadcast domains.
11000000.10101000.00001010.00001111
The Transport layer segments user data.
Router
10101100.00010000.00010100.00110111

49. At which layer is routing implemented - enabling connections and path selection between two end systems?
The Transport layer user virtual circuits to create a reliable connection between two hosts.
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 routing through an internetwork and logical addressing.
Switch or bridge

50. Logical addressing is used at this layer.
Network
Packet switching - Packet filtering - Internetwork communication - Path selection
The Transport layer user virtual circuits to create a reliable connection between two hosts.
11000000.10101000.00001010.00001111