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Cisco Prep

Instructions:

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. This device uses hardware addresses to filter a network.
Data Link & Physical
48 bits (6 bytes)
Bridge or switch
The Physical layer is responsible for transporting 1s and 0s in a digital signal.

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

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3. Which two fields are contained within an IEEE Ethernet frame header?
Data Link
Source and destination MAC address and FCS field
Network
The Session layer creates sessions between different hosts' applications.

4. Convert 10.11.12.99 to binary format.
Hub and repeater
Transport
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
00001010.00001011.00001100.01100011

5. You have the following binary number: 10110111 - What are the decimal and hexadecimal equivalents?
00001010.00001011.00001100.01100011
RJ45 UTP crossover cable.
84:D2:43:B3
183/B7

6. What is the bit length and expression form of a MAC address?
48 bits (6 bytes)
Decrease the window size.
The Session layer creates sessions between different hosts' applications.
Fiber-opticcable

7. 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 Network layer provides routing through an internetwork and logical addressing.
Transport
Bridge or switch

8. When data is encapsulated - which is the correct order?
The Presentation layer makes sure that data is in a readable format for the Application layer.
The Session layer creates sessions between different hosts' applications.
The Network layer provides logical addressing - typically IP addressing and routing.
Data - segment - packet - frame - bit

9. You want to implement a network medium that is not susceptible to EMI. Which type of cabling should you use?
Hub
Fiber-opticcable
The Data Link layer frames packets received from the Network layer.
Transport

10. 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.
Fiber-opticcable
198.211.57.209
84:D2:43:B3

11. What are two unique characteristics of half-duplex Ethernet when compared to full-duplex Ethernet?
The Network layer creates packets out of segments handed down from the Transport layer.
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
Transport
Transport

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

13. 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.
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 Data Link layer is responsible for the framing of data packets.
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

14. 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?
Decrease the window size.
The Transport layer user virtual circuits to create a reliable connection between two hosts.
Network
CA:F5:83:EB

15. Which layer is represented by segments?
The Physical layer is responsible for the electrical and mechanical connections between devices.
The Data Link layer frames packets received from the Network layer.
Bridge or switch
The Transport layer segments user data.

16. Segmentation of a data stream happens at which layer of the OSI model?
Network
3 - 2 - 1 - none
Transport
198.211.57.209

17. This device breaks up collision domains and broadcast domains.
Data Link & Physical
Switch to switch - host to host - switch to host
Layer 4
Router

18. Convert 10000100.11010010.01000011.10110011 to hexadecimal format.
84:D2:43:B3
The Transport layer segments user data.
Hub
11000000.10101000.00001010.00001111

19. Acknowledgments - sequencing - and flow control are characteristics of which OSI layer?
Layer 4
The Session layer sets up - maintains - and terminates sessions between applications.
Transport
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.

20. How does a host on an Ethernet LAN know when to transmit after a collision has occurred? (Name two)
Router
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
Hub

21. 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 Network layer provides logical addressing - typically IP addressing and routing.
Router
Hub and repeater
The Transport layer user virtual circuits to create a reliable connection between two hosts.

22. 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
10101100.00010000.00010100.00110111
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 Transport layer segments user data.
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).

23. Convert 11001010.11110101.10000011.11101011 to hexadecimal format.
The Data Link layer frames packets received from the Network layer.
Switch to switch - host to host - switch to host
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
CA:F5:83:EB

24. This device can never run full duplex.
To provide a means for the receiver to govern the amount of data sent by the sender.
The Session layer creates sessions between different hosts' applications.
Hub
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.

25. Which layer provides logical addressing that routers will use for path determination?
Data - segment - packet - frame - bit
RJ45 UTP crossover cable.
The Network layer provides logical addressing - typically IP addressing and routing.
The Physical layer is responsible for the electrical and mechanical connections between devices.

26. Routers operate at layer __. LAN switches operate at layer __. Ethernet hubs operate at layer __. Word processing operates at layer __.
10101100.00010000.00010100.00110111
Bridge or switch
183/B7
3 - 2 - 1 - none

27. What type of RJ45 UTP cable is used between switches?
The Session layer creates sessions between different hosts' applications.
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
RJ45 UTP crossover cable.
3 - 2 - 1 - none

28. This layer creates a virtual circuit before transmitting between two end stations.
The Transport layer user virtual circuits to create a reliable connection between two hosts.
Transport
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

29. Logical addressing is used at this layer.
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).
Network
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.

30. This layer uses service access points.
Data Link (LLC sublayer)
3 - 2 - 1 - none
Router
Segments - packets - frames - bits

31. Which layer combines bits into bytes and bytes into frames - uses MAC addressing - and provides error detection?
The Network layer provides logical addressing - typically IP addressing and routing.
The Data Link layer is responsible for the framing of data packets.
Hub and repeater
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

32. Put the following in order of encapsulation: Packets - Frames - Bits - Segments
To provide a means for the receiver to govern the amount of data sent by the sender.
D8:1B:3D:76
Segments - packets - frames - bits
Transport

33. Name three types of connections that can use full duplex.
Switch to switch - host to host - switch to host
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.
Network
Packet switching - Packet filtering - Internetwork communication - Path selection

34. Convert 11011000.00011011.00111101.01110110 to hexadecimal format.
D8:1B:3D:76
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.
198.211.57.209

35. What are two purposes for segmentation with a bridge?
D8:1B:3D:76
To create more collision domains and to add more bandwidth for users.
Packet switching - Packet filtering - Internetwork communication - Path selection
183/B7

36. This device creates many smaller collision domains - but the network is still one large broadcast domain.
Switch or bridge
The Transport layer user virtual circuits to create a reliable connection between two hosts.
The Transport layer segments user data.
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.

37. Ethernet is defined at these layers.
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).
Data Link & Physical
84:D2:43:B3

38. Which layer is represented by frames?
3 - 2 - 1 - none
The Data Link layer frames packets received from the Network layer.
Router
11000000.10101000.00001010.00001111

39. Which layer 1 devices can be used to enlarge the area covered by a single LAN segment?
Hub and repeater
The Transport layer user virtual circuits to create a reliable connection between two hosts.
Decrease the window size.
198.211.57.209

40. 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?
Network
Router
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
3 - 2 - 1 - none

41. Which layer is responsible for creating - managing - and terminating sessions between applications?
The Session layer sets up - maintains - and terminates sessions between applications.
Router
Packet switching - Packet filtering - Internetwork communication - Path selection
Transport

42. Convert 172.16.20.55 to binary format.
Data Link (LLC sublayer)
10101100.00010000.00010100.00110111
The Session layer creates sessions between different hosts' applications.
RJ45 UTP crossover cable.

43. Convert 11000110.11010011.00111001.11010001 to decimal IP format.
The Session layer sets up - maintains - and terminates sessions between applications.
198.211.57.209
The Data Link layer frames packets received from the Network layer.
Transport

44. Convert 10000100.11010010.10111000.10100110 to decimal IP format.
Transport
132.210.184.166
Data Link (LLC sublayer)
Router

45. This device creates one big collision domain and one large broadcast domain.
Hub
Bridge or switch
Data Link
The Data Link layer frames packets received from the Network layer.

46. Which layer is represented by bits?
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.
The Data Link layer frames packets received from the Network layer.
Router

47. This device can measure the distance to a remote network.
Data Link & Physical
00001010.00001011.00001100.01100011
Network
Router

48. Which of the following are 3 common types of flow control?
Buffering - windowing - congestion avoidance
Source and destination MAC address and FCS field
The Network layer provides logical addressing - typically IP addressing and routing.
RJ45 UTP rolled cable.

49. Which layer is represented by packets?
3 - 2 - 1 - none
The Network layer creates packets out of segments handed down from the Transport layer.
Switch or bridge
Hub and repeater

50. Convert 192.168.10.15 to binary format.
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
Switch to switch - host to host - switch to host
198.211.57.209
11000000.10101000.00001010.00001111

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