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Cisco Prep

Instructions:

Answer 50 questions in 15 minutes.
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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 is represented by bits?
Switch or bridge
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
48 bits (6 bytes)
11000000.10101000.00001010.00001111

2. This device creates one big collision domain and one large broadcast domain.
The Network layer provides routing through an internetwork and logical addressing.
Hub
The Data Link layer is responsible for the framing of data packets.
To provide a means for the receiver to govern the amount of data sent by the sender.

3. This device can never run full duplex.
Buffering - windowing - congestion avoidance
D8:1B:3D:76
Hub
CA:F5:83:EB

4. 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.
Transport
Router
Router

5. Which layer provides logical addressing that routers will use for path determination?
84:D2:43:B3
The Network layer provides logical addressing - typically IP addressing and routing.
Transport
00001010.00001011.00001100.01100011

6. Convert 172.16.20.55 to binary format.
10101100.00010000.00010100.00110111
The Transport layer user virtual circuits to create a reliable connection between two hosts.
To create more collision domains and to add more bandwidth for users.
The Network layer provides logical addressing - typically IP addressing and routing.

7. What is the bit length and expression form of a MAC address?
84:D2:43:B3
48 bits (6 bytes)
204.51.170.85
Switch or bridge

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

9. Put the following in order of encapsulation: Packets - Frames - Bits - Segments
Segments - packets - frames - bits
Hub
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.
Router

10. What type of RJ45 UTP cable is used between switches?
Fiber-opticcable
Transport
The Transport layer segments user data.
RJ45 UTP crossover cable.

11. Which layer combines bits into bytes and bytes into frames - uses MAC addressing - and provides error detection?
The Data Link layer is responsible for the framing of data packets.
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.
Layer 4
The Data Link layer frames packets received from the Network layer.

12. 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
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.
Router
RJ45 UTP crossover cable.

13. 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 user virtual circuits to create a reliable connection between two hosts.
The Transport layer segments user data.
The Data Link layer is responsible for the framing of data 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).

14. This device can measure the distance to a remote network.
Source and destination MAC address and FCS field
Router
The Session layer creates sessions between different hosts' applications.
11000000.10101000.00001010.00001111

15. Which layer is responsible for creating - managing - and terminating sessions between applications?
To create more collision domains and to add more bandwidth for users.
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.
The Presentation layer makes sure that data is in a readable format for the Application layer.

16. Name three types of connections that can use full duplex.
Switch to switch - host to host - switch to host
The Data Link layer is responsible for the framing of data packets.
Segments - packets - frames - bits
The Presentation layer makes sure that data is in a readable format for the Application layer.

17. 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?
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
RJ45 UTP crossover cable.
Decrease the window size.
Network

18. Which layer is represented by packets?
Router
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 creates packets out of segments handed down from the Transport layer.
CA:F5:83:EB

19. Convert 11001010.11110101.10000011.11101011 to hexadecimal format.
CA:F5:83:EB
D8:1B:3D:76
Segments - packets - frames - bits
The Network layer provides routing through an internetwork and logical addressing.

20. This device sends and receives information about the Network layer.
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
Router
RJ45 UTP rolled 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

21. Convert 10000100.11010010.10111000.10100110 to decimal IP format.
Transport
The Presentation layer makes sure that data is in a readable format for the Application layer.
Network
132.210.184.166

22. Convert 11000110.11010011.00111001.11010001 to decimal IP format.
The Session layer creates sessions between different hosts' applications.
The Network layer provides routing through an internetwork and logical addressing.
198.211.57.209
Router

23. Which layer segments and reassembles data into a data stream?
Transport
Data - segment - packet - frame - bit
RJ45 UTP crossover cable.
The Transport layer segments user data.

24. What are two unique characteristics of half-duplex Ethernet when compared to full-duplex Ethernet?
The Data Link layer frames packets received from the Network layer.
3 - 2 - 1 - none
The Session layer sets up - maintains - and terminates sessions between applications.
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.

25. Acknowledgments - sequencing - and flow control are characteristics of which OSI layer?
Layer 4
To provide a means for the receiver to govern the amount of data sent by the sender.
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
Hub

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

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27. Which layer 1 devices can be used to enlarge the area covered by a single LAN segment?
The Data Link layer is responsible for the framing of data packets.
Fiber-opticcable
Hub and repeater
Transport

28. This device creates many smaller collision domains - but the network is still one large broadcast domain.
Fiber-opticcable
Data Link & Physical
Data Link
Switch or bridge

29. 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.
RJ45 UTP rolled cable.
Transport
00001010.00001011.00001100.01100011

30. Which two fields are contained within an IEEE Ethernet frame header?
Buffering - windowing - congestion avoidance
The Physical layer is responsible for the electrical and mechanical connections between devices.
Hub
Source and destination MAC address and FCS field

31. This layer uses service access points.
Data Link (LLC sublayer)
Segments - packets - frames - bits
132.210.184.166
10101100.00010000.00010100.00110111

32. What type of RJ45 UTP cable do you use to connect a PC's COM port to a router or switch console port?
Network
RJ45 UTP rolled cable.
Data Link
To create more collision domains and to add more bandwidth for users.

33. 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.
11000000.10101000.00001010.00001111
204.51.170.85
The Data Link layer is responsible for the framing of data packets.

34. Which of the following are 3 common types of flow control?
Transport
84:D2:43:B3
Buffering - windowing - congestion avoidance
Router

35. This layer creates a virtual circuit before transmitting between two end stations.
Switch or bridge
Network
Source and destination MAC address and FCS field
Transport

36. Which layer is represented by segments?
The Transport layer segments user data.
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Switch or bridge
Hub and repeater

37. What are two purposes for segmentation with a bridge?
Data - segment - packet - frame - bit
RJ45 UTP crossover cable.
Network
To create more collision domains and to add more bandwidth for users.

38. You want to implement a network medium that is not susceptible to EMI. Which type of cabling should you use?
Transport
Fiber-opticcable
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Packet switching - Packet filtering - Internetwork communication - Path selection

39. Convert 192.168.10.15 to binary format.
11000000.10101000.00001010.00001111
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
Router

40. Convert 10.11.12.99 to binary format.
Bridge or switch
00001010.00001011.00001100.01100011
D8:1B:3D:76
The Presentation layer makes sure that data is in a readable format for the Application layer.

41. Name four router functions.
CA:F5:83:EB
Packet switching - Packet filtering - Internetwork communication - Path selection
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Transport

42. Convert 10000100.11010010.01000011.10110011 to hexadecimal format.
The Transport layer segments user data.
Data Link
84:D2:43:B3
Hub and repeater

43. Which layer manages device addressing - tracks the location of devices on the network - and determines the best way to move data?
Network
Segments - packets - frames - bits
Transport
204.51.170.85

44. Convert 11011000.00011011.00111101.01110110 to hexadecimal format.
Transport
The Network layer provides logical addressing - typically IP addressing and routing.
CA:F5:83:EB
D8:1B:3D:76

45. This layer supports flow control and sequencing.
Data Link (LLC sublayer)
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.
Transport

46. When data is encapsulated - which is the correct order?
132.210.184.166
Data - segment - packet - frame - bit
Router
The Data Link layer is responsible for the framing of data packets.

47. Why does the data communication industry use the layered OSI reference model? (Name two)
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
183/B7
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).
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.

48. 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 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 Transport layer user virtual circuits to create a reliable connection between two hosts.
Switch to switch - host to host - switch to host
Buffering - windowing - congestion avoidance

49. Which layer is represented by frames?
The Data Link layer frames packets received from the Network layer.
The Physical layer is responsible for the electrical and mechanical connections between devices.
Network
RJ45 UTP rolled cable.

50. What is the purpose of flow control?
Switch to switch - host to host - switch to host
RJ45 UTP rolled cable.
Transport
To provide a means for the receiver to govern the amount of data sent by the sender.

Can you answer 50 questions in 15 minutes?

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