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Cisco Prep

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Answer 50 questions in 15 minutes.
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Match each statement with the correct term.
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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
The Transport layer user virtual circuits to create a reliable connection between two hosts.
Hub and repeater
Router

2. Which layer specifies voltage - wire speed - and pinout cables and moves bits between devices?
Router
Packet switching - Packet filtering - Internetwork communication - Path selection
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
The Physical layer is responsible for the electrical and mechanical connections between devices.

3. Logical addressing is used at this layer.
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Switch to switch - host to host - switch to host
Network
The Transport layer segments user data.

4. Convert 11011000.00011011.00111101.01110110 to hexadecimal format.
The Data Link layer is responsible for the framing of data packets.
Router
The Network layer provides routing through an internetwork and logical addressing.
D8:1B:3D:76

5. What is the purpose of flow control?
Packet switching - Packet filtering - Internetwork communication - Path selection
The Data Link layer frames packets received from the Network layer.
Transport
To provide a means for the receiver to govern the amount of data sent by the sender.

6. Which layer combines bits into bytes and bytes into frames - uses MAC addressing - and provides error detection?
132.210.184.166
CA:F5:83:EB
The Data Link layer is responsible for the framing of data packets.
D8:1B:3D:76

7. What type of RJ45 UTP cable do you use to connect a PC's COM port to a router or switch console port?
RJ45 UTP rolled cable.
204.51.170.85
11000000.10101000.00001010.00001111
Bridge or switch

8. Which two fields are contained within an IEEE Ethernet frame header?
Source and destination MAC address and FCS field
The Data Link layer is responsible for the framing of data packets.
The Presentation layer makes sure that data is in a readable format for the Application layer.
Network

9. What are two purposes for segmentation with a bridge?
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.
To create more collision domains and to add more bandwidth for users.
The Data Link layer frames packets received from the Network layer.

10. This layer supports flow control and sequencing.
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).
Transport
The Transport layer segments user data.
D8:1B:3D:76

11. Convert 11001010.11110101.10000011.11101011 to hexadecimal format.
Network
Decrease the window size.
The Network layer creates packets out of segments handed down from the Transport layer.
CA:F5:83:EB

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?
Hub and repeater
The Session layer sets up - maintains - and terminates sessions between applications.
Switch to switch - host to host - switch to host
The Transport layer user virtual circuits to create a reliable connection between two hosts.

13. Which of the following are 3 common types of flow control?
Data Link
11000000.10101000.00001010.00001111
Buffering - windowing - congestion avoidance
Switch to switch - host to host - switch to host

14. Which layer 1 devices can be used to enlarge the area covered by a single LAN segment?
Switch or bridge
RJ45 UTP crossover cable.
Data - segment - packet - frame - bit
Hub and repeater

15. What type of RJ45 UTP cable is used between switches?
Layer 4
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.
RJ45 UTP crossover cable.

16. This layer creates a virtual circuit before transmitting between two end stations.
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.
To provide a means for the receiver to govern the amount of data sent by the sender.
Transport
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.

17. Which layer is represented by frames?
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
D8:1B:3D:76
Network
The Data Link layer frames packets received from the Network layer.

18. What are two unique characteristics of half-duplex Ethernet when compared to full-duplex Ethernet?
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
Bridge or switch
The Presentation layer makes sure that data is in a readable format for the Application layer.
Transport

19. This device uses hardware addresses to filter a network.
Bridge or switch
Transport
Switch or bridge
Source and destination MAC address and FCS field

20. Which layer is responsible for converting data packets from the Data Link layer into electrical signals?
The Session layer creates sessions between different hosts' applications.
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 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).
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.

21. Which layer provides logical addressing that routers will use for path determination?
Buffering - windowing - congestion avoidance
Hub
RJ45 UTP crossover cable.
The Network layer provides logical addressing - typically IP addressing and routing.

22. Which layer manages device addressing - tracks the location of devices on the network - and determines the best way to move data?
Transport
RJ45 UTP rolled cable.
Network
204.51.170.85

23. Put the following in order of encapsulation: Packets - Frames - Bits - Segments
The Session layer creates sessions between different hosts' applications.
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
Segments - packets - frames - bits
To create more collision domains and to add more bandwidth for users.

24. Convert 10000100.11010010.10111000.10100110 to decimal IP format.
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.
10101100.00010000.00010100.00110111
132.210.184.166
Hub and repeater

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

26. Which layer is represented by packets?
Buffering - windowing - congestion avoidance
The Network layer creates packets out of segments handed down from the Transport layer.
48 bits (6 bytes)
Data Link (LLC sublayer)

27. Convert 192.168.10.15 to binary format.
3 - 2 - 1 - none
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
11000000.10101000.00001010.00001111
The Session layer creates sessions between different hosts' applications.

28. Which layer segments and reassembles data into a data stream?
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Transport
Data Link (LLC sublayer)

29. Which layer defines how data is formatted - presented - encoded - and converted for use on the 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
Segments - packets - frames - bits
Router
The Presentation layer makes sure that data is in a readable format for the Application layer.

30. This device breaks up collision domains and broadcast domains.
132.210.184.166
183/B7
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Router

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

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32. Why does the data communication industry use the layered OSI reference model? (Name two)
198.211.57.209
Switch to switch - host to host - switch to host
Bridge or switch
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.

33. Which layer is represented by bits?
CA:F5:83:EB
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Transport
Router

34. Routers operate at layer __. LAN switches operate at layer __. Ethernet hubs operate at layer __. Word processing operates at layer __.
The Data Link layer frames packets received from the Network layer.
Network
3 - 2 - 1 - none
To provide a means for the receiver to govern the amount of data sent by the sender.

35. 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 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).
D8:1B:3D:76
48 bits (6 bytes)
Decrease the window size.

36. 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
Hub and repeater
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 transporting 1s and 0s in a digital signal.
To create more collision domains and to add more bandwidth for users.

37. Which layer is responsible for creating - managing - and terminating sessions between applications?
The Session layer sets up - maintains - and terminates sessions between applications.
Switch or bridge
Layer 4
11000000.10101000.00001010.00001111

38. 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.
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).
Packet switching - Packet filtering - Internetwork communication - Path selection
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

39. This device creates one big collision domain and one large broadcast domain.
The Network layer provides logical addressing - typically IP addressing and routing.
Network
Hub
Switch or bridge

40. This device can never run full duplex.
Hub
198.211.57.209
204.51.170.85
Data - segment - packet - frame - bit

41. Convert 172.16.20.55 to binary format.
The Network layer provides routing through an internetwork and logical addressing.
10101100.00010000.00010100.00110111
204.51.170.85
Transport

42. Segmentation of a data stream happens at which layer of the OSI model?
Bridge or switch
Transport
RJ45 UTP crossover cable.
CA:F5:83:EB

43. 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.
3 - 2 - 1 - none
183/B7
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.

44. Name three types of connections that can use full duplex.
Data Link & Physical
132.210.184.166
Buffering - windowing - congestion avoidance
Switch to switch - host to host - switch to host

45. Acknowledgments - sequencing - and flow control are characteristics of which OSI layer?
Layer 4
Router
Data - segment - packet - frame - bit
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

46. This layer uses service access points.
Network
The Session layer sets up - maintains - and terminates sessions between applications.
Data Link (LLC sublayer)
To create more collision domains and to add more bandwidth for users.

47. When data is encapsulated - which is the correct order?
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
Data - segment - packet - frame - bit
Data Link (LLC sublayer)
The Network layer provides routing through an internetwork and logical addressing.

48. This device sends and receives information about the Network layer.
00001010.00001011.00001100.01100011
Router
Transport
204.51.170.85

49. Convert 10000100.11010010.01000011.10110011 to hexadecimal format.
84:D2:43:B3
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 Network layer provides logical addressing - typically IP addressing and routing.

50. Convert 11001100.00110011.10101010.01010101 to decimal IP format.
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.
204.51.170.85
To create more collision domains and to add more bandwidth for users.
00001010.00001011.00001100.01100011

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