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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. When data is encapsulated - which is the correct order?
Hub
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
Data - segment - packet - frame - bit
204.51.170.85

2. 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.
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 Network layer provides routing through an internetwork and logical addressing.
The Presentation layer makes sure that data is in a readable format for the Application layer.

3. You want to implement a network medium that is not susceptible to EMI. Which type of cabling should you use?
Hub and repeater
The Network layer provides logical addressing - typically IP addressing and routing.
Fiber-opticcable
The Data Link layer frames packets received from the Network layer.

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

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5. This device can measure the distance to a remote network.
Buffering - windowing - congestion avoidance
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
Router
The Presentation layer makes sure that data is in a readable format for the Application layer.

6. Which layer provides the physical transmission of the data and handles error notification - network topology - and flow control?
Data Link
Transport
The Data Link layer frames packets received from the Network layer.
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.

7. This device creates one big collision domain and one large broadcast domain.
To provide a means for the receiver to govern the amount of data sent by the sender.
Hub
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 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).

8. Which layer is represented by frames?
Layer 4
The Network layer creates packets out of segments handed down from the Transport layer.
The Data Link layer frames packets received from the Network layer.
The Transport layer user virtual circuits to create a reliable connection between two hosts.

9. This device breaks up collision domains and broadcast domains.
The Data Link layer frames packets received from the Network layer.
The Data Link layer is responsible for the framing of data packets.
204.51.170.85
Router

10. Convert 192.168.10.15 to binary format.
The Session layer creates sessions between different hosts' applications.
11000000.10101000.00001010.00001111
Hub
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.

11. 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.
Hub and repeater
The Physical layer is responsible for the electrical and mechanical connections between devices.
Hub

12. This device uses hardware addresses to filter a network.
Bridge or switch
Data - segment - packet - frame - bit
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).
10101100.00010000.00010100.00110111

13. Ethernet is defined at these layers.
Switch to switch - host to host - switch to host
Bridge or switch
Data Link & Physical
The Network layer creates packets out of segments handed down from the Transport layer.

14. Which of the following are 3 common types of flow control?
Router
Buffering - windowing - congestion avoidance
Transport
Fiber-opticcable

15. Which two fields are contained within an IEEE Ethernet frame header?
The Network layer provides routing through an internetwork and logical addressing.
10101100.00010000.00010100.00110111
Source and destination MAC address and FCS field
Buffering - windowing - congestion avoidance

16. 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.
Router
Switch to switch - host to host - switch to host
Segments - packets - frames - bits

17. 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?
183/B7
The Transport layer user virtual circuits to create a reliable connection between two hosts.
84:D2:43:B3
RJ45 UTP crossover cable.

18. What type of RJ45 UTP cable is used between switches?
Data Link
10101100.00010000.00010100.00110111
RJ45 UTP crossover cable.
132.210.184.166

19. At which layer is routing implemented - enabling connections and path selection between two end systems?
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.
10101100.00010000.00010100.00110111
Switch or bridge
The Network layer provides routing through an internetwork and logical addressing.

20. Convert 172.16.20.55 to binary format.
To provide a means for the receiver to govern the amount of data sent by the sender.
D8:1B:3D:76
Transport
10101100.00010000.00010100.00110111

21. Which layer is responsible for creating - managing - and terminating sessions between applications?
132.210.184.166
The Session layer sets up - maintains - and terminates sessions between applications.
00001010.00001011.00001100.01100011
Fiber-opticcable

22. Convert 10.11.12.99 to binary format.
00001010.00001011.00001100.01100011
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.
198.211.57.209

23. Acknowledgments - sequencing - and flow control are characteristics of which OSI layer?
Layer 4
The Network layer creates packets out of segments handed down from the Transport layer.
Segments - packets - frames - bits
The Session layer creates sessions between different hosts' applications.

24. What are two purposes for segmentation with a bridge?
The Physical layer is responsible for the electrical and mechanical connections between devices.
204.51.170.85
To create more collision domains and to add more bandwidth for users.
To provide a means for the receiver to govern the amount of data sent by the sender.

25. Convert 11001010.11110101.10000011.11101011 to hexadecimal format.
Router
CA:F5:83:EB
198.211.57.209
D8:1B:3D:76

26. Put the following in order of encapsulation: Packets - Frames - Bits - Segments
Layer 4
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.
Bridge or switch
Segments - packets - frames - bits

27. How does a host on an Ethernet LAN know when to transmit after a collision has occurred? (Name two)
00001010.00001011.00001100.01100011
Data Link & Physical
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 Data Link layer is responsible for the framing of data packets.

28. 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.
48 bits (6 bytes)
D8:1B:3D:76
The Network layer provides logical addressing - typically IP addressing and routing.

29. Which layer is represented by bits?
Switch or bridge
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Layer 4
Packet switching - Packet filtering - Internetwork communication - Path selection

30. Routers operate at layer __. LAN switches operate at layer __. Ethernet hubs operate at layer __. Word processing operates at layer __.
3 - 2 - 1 - none
The Session layer sets up - maintains - and terminates sessions between applications.
Data - segment - packet - frame - bit
RJ45 UTP crossover cable.

31. Convert 11000110.11010011.00111001.11010001 to decimal IP format.
Transport
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).
198.211.57.209
Buffering - windowing - congestion avoidance

32. Which layer 1 devices can be used to enlarge the area covered by a single LAN segment?
Hub and repeater
Router
11000000.10101000.00001010.00001111
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.

33. This layer supports flow control and sequencing.
The Session layer sets up - maintains - and terminates sessions between applications.
84:D2:43:B3
Transport
132.210.184.166

34. 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 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.
Network
10101100.00010000.00010100.00110111

35. This device creates many smaller collision domains - but the network is still one large broadcast domain.
Switch or bridge
204.51.170.85
The Physical layer is responsible for the electrical and mechanical connections between devices.
10101100.00010000.00010100.00110111

36. This device can never run full duplex.
Hub
Bridge or switch
The Transport layer segments user data.
Fiber-opticcable

37. Which layer is represented by segments?
Fiber-opticcable
The Transport layer segments user data.
198.211.57.209
Decrease the window size.

38. You have the following binary number: 10110111 - What are the decimal and hexadecimal equivalents?
183/B7
Fiber-opticcable
Layer 4
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.

39. What is the bit length and expression form of a MAC address?
Router
The Network layer creates packets out of segments handed down from the Transport layer.
84:D2:43:B3
48 bits (6 bytes)

40. This layer uses service access points.
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
Decrease the window size.
Data Link & Physical
Data Link (LLC sublayer)

41. Logical addressing is used at this layer.
Network
The Network layer provides routing through an internetwork and logical addressing.
Transport
RJ45 UTP rolled cable.

42. Which layer is represented by packets?
RJ45 UTP crossover cable.
The Network layer creates packets out of segments handed down from the Transport layer.
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

43. Which layer combines bits into bytes and bytes into frames - uses MAC addressing - and provides error detection?
The Network layer provides routing through an internetwork and logical addressing.
The Physical layer is responsible for the electrical and mechanical connections between devices.
The Data Link layer is responsible for the framing of data packets.
84:D2:43:B3

44. This layer creates a virtual circuit before transmitting between two end stations.
The Network layer provides logical addressing - typically IP addressing and routing.
Transport
Switch or bridge
Segments - packets - frames - bits

45. Which layer provides logical addressing that routers will use for path determination?
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 Network layer provides logical addressing - typically IP addressing and routing.
Transport
Network

46. Which layer manages device addressing - tracks the location of devices on the network - and determines the best way to move data?
Router
10101100.00010000.00010100.00110111
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
Network

47. Which layer specifies voltage - wire speed - and pinout cables and moves bits between devices?
Transport
RJ45 UTP rolled cable.
The Physical layer is responsible for the electrical and mechanical connections between devices.
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. What is the purpose of flow control?
Bridge or switch
Buffering - windowing - congestion avoidance
Transport
To provide a means for the receiver to govern the amount of data sent by the sender.

49. Convert 11011000.00011011.00111101.01110110 to hexadecimal format.
The Transport layer segments user data.
Router
CA:F5:83:EB
D8:1B:3D:76

50. Name four router functions.
Router
Fiber-opticcable
The Session layer creates sessions between different hosts' applications.
Packet switching - Packet filtering - Internetwork communication - Path selection

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