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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. 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.
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
10101100.00010000.00010100.00110111
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.

2. Why does the data communication industry use the layered OSI reference model? (Name two)
To create more collision domains and to add more bandwidth for users.
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.
Router

3. Put the following in order of encapsulation: Packets - Frames - Bits - Segments
CA:F5:83:EB
Segments - packets - frames - bits
Hub and repeater
The Session layer creates sessions between different hosts' applications.

4. Which layer is represented by frames?
Hub and repeater
3 - 2 - 1 - none
The Data Link layer frames packets received from the Network layer.
Router

5. 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?
3 - 2 - 1 - none
Decrease the window size.
The Network layer creates packets out of segments handed down from the Transport layer.
Hub

6. 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 Transport layer user virtual circuits to create a reliable connection between two hosts.
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.
Router

7. This layer creates a virtual circuit before transmitting between two end stations.
The Physical layer is responsible for the electrical and mechanical connections between devices.
RJ45 UTP crossover cable.
Data Link
Transport

8. 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
Switch or bridge
To create more collision domains and to add more bandwidth for users.
Router

9. This layer supports flow control and sequencing.
The Data Link layer is responsible for the framing of data packets.
Transport
The Physical layer is responsible for the electrical and mechanical connections between devices.
RJ45 UTP crossover cable.

10. Which layer is represented by bits?
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Transport
The Physical layer is responsible for the electrical and mechanical connections between devices.
Network

11. Routers operate at layer __. LAN switches operate at layer __. Ethernet hubs operate at layer __. Word processing operates at layer __.
Transport
3 - 2 - 1 - none
The Presentation layer makes sure that data is in a readable format for the Application layer.
The Physical layer is responsible for transporting 1s and 0s in a digital signal.

12. This device can never run full duplex.
Decrease the window size.
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Hub
10101100.00010000.00010100.00110111

13. At which layer is routing implemented - enabling connections and path selection between two end systems?
Router
The Network layer provides routing through an internetwork and logical addressing.
The Session layer creates sessions between different hosts' applications.
Transport

14. Which layer combines bits into bytes and bytes into frames - uses MAC addressing - and provides error detection?
Segments - packets - frames - bits
Fiber-opticcable
The Data Link layer is responsible for the framing of data packets.
Network

15. This device sends and receives information about the Network layer.
Router
10101100.00010000.00010100.00110111
84:D2:43:B3
Transport

16. What is the purpose of flow control?
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 provide a means for the receiver to govern the amount of data sent by the sender.
Router
Segments - packets - frames - bits

17. Which layer is represented by packets?
The Data Link layer is responsible for the framing of data packets.
Data - segment - packet - frame - bit
The Network layer creates packets out of segments handed down from the Transport layer.
The Network layer provides logical addressing - typically IP addressing and routing.

18. This device creates one big collision domain and one large broadcast domain.
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.
00001010.00001011.00001100.01100011
Hub

19. Convert 11011000.00011011.00111101.01110110 to hexadecimal format.
D8:1B:3D:76
Transport
Network
Buffering - windowing - congestion avoidance

20. Logical addressing is used at this layer.
Transport
00001010.00001011.00001100.01100011
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Network

21. What is the bit length and expression form of a MAC address?
48 bits (6 bytes)
Decrease the window size.
84:D2:43:B3
Network

22. 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
Transport
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
RJ45 UTP crossover cable.

23. Which layer is represented by segments?
Router
The Session layer sets up - maintains - and terminates sessions between applications.
Switch to switch - host to host - switch to host
The Transport layer segments user data.

24. When data is encapsulated - which is the correct order?
RJ45 UTP rolled cable.
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Data - segment - packet - frame - bit
Switch to switch - host to host - switch to host

25. Which layer is responsible for converting data packets from the Data Link layer into electrical signals?
Transport
Switch to switch - host to host - switch to host
To provide a means for the receiver to govern the amount of data sent by the sender.
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.

26. Convert 172.16.20.55 to binary format.
10101100.00010000.00010100.00110111
The Presentation layer makes sure that data is in a readable format for the Application layer.
Router
The Physical layer is responsible for transporting 1s and 0s in a digital signal.

27. This device can measure the distance to a remote network.
Transport
Router
The Physical layer is responsible for the electrical and mechanical connections between devices.
Data - segment - packet - frame - bit

28. What are two purposes for segmentation with a bridge?
To create more collision domains and to add more bandwidth for users.
Router
Hub
10101100.00010000.00010100.00110111

29. This device creates many smaller collision domains - but the network is still one large broadcast domain.
Transport
Packet switching - Packet filtering - Internetwork communication - Path selection
Switch or bridge
Segments - packets - frames - bits

30. Segmentation of a data stream happens at which layer of the OSI model?
Transport
00001010.00001011.00001100.01100011
132.210.184.166
The Data Link layer is responsible for the framing of data packets.

31. Convert 11000110.11010011.00111001.11010001 to decimal IP format.
RJ45 UTP crossover cable.
11000000.10101000.00001010.00001111
The Presentation layer makes sure that data is in a readable format for the Application layer.
198.211.57.209

32. Ethernet is defined at these layers.
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Data Link
Data Link & Physical
The Data Link layer frames packets received from the Network layer.

33. Name four router functions.
Segments - packets - frames - bits
Fiber-opticcable
Packet switching - Packet filtering - Internetwork communication - Path selection
Source and destination MAC address and FCS field

34. Convert 10000100.11010010.10111000.10100110 to decimal IP format.
204.51.170.85
132.210.184.166
Data Link & Physical
The Physical layer is responsible for the electrical and mechanical connections between devices.

35. 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.
Router
Source and destination MAC address and FCS field
The Data Link layer frames packets received from the Network layer.

36. Which of the following are 3 common types of flow control?
Buffering - windowing - congestion avoidance
Switch or bridge
Network
204.51.170.85

37. Convert 10000100.11010010.01000011.10110011 to hexadecimal format.
Layer 4
84:D2:43:B3
Decrease the window size.
Packet switching - Packet filtering - Internetwork communication - Path selection

38. Which two fields are contained within an IEEE Ethernet frame header?
Hub
10101100.00010000.00010100.00110111
Source and destination MAC address and FCS field
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).

39. Acknowledgments - sequencing - and flow control are characteristics of which OSI layer?
Layer 4
RJ45 UTP crossover cable.
The Network layer provides logical addressing - typically IP addressing and routing.
The Transport layer user virtual circuits to create a reliable connection between two hosts.

40. This device breaks up collision domains and broadcast domains.
Router
To create more collision domains and to add more bandwidth for users.
Layer 4
The Transport layer segments user data.

41. Convert 11001010.11110101.10000011.11101011 to hexadecimal format.
CA:F5:83:EB
00001010.00001011.00001100.01100011
The Network layer provides routing through an internetwork and logical addressing.
The Physical layer is responsible for transporting 1s and 0s in a digital signal.

42. 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.
204.51.170.85
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.

43. This device uses hardware addresses to filter a network.
To create more collision domains and to add more bandwidth for users.
Hub
Router
Bridge or switch

44. Which layer manages device addressing - tracks the location of devices on the network - and determines the best way to move data?
204.51.170.85
Router
Network
3 - 2 - 1 - none

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

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46. Which layer provides the physical transmission of the data and handles error notification - network topology - and flow control?
198.211.57.209
Data Link
D8:1B:3D:76
RJ45 UTP rolled cable.

47. Which layer is responsible for creating - managing - and terminating sessions between 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 Session layer sets up - maintains - and terminates sessions between applications.
183/B7
Hub

48. 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
84:D2:43:B3
204.51.170.85
Hub
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).

49. You have the following binary number: 10110111 - What are the decimal and hexadecimal equivalents?
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.
183/B7
Transport

50. What type of RJ45 UTP cable do you use to connect a PC's COM port to a router or switch console port?
183/B7
RJ45 UTP rolled cable.
The Presentation layer makes sure that data is in a readable format for the Application layer.
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.