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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. Convert 172.16.20.55 to binary format.
Router
D8:1B:3D:76
10101100.00010000.00010100.00110111
The Data Link layer is responsible for the framing of data packets.

2. Which layer is represented by frames?
The Data Link layer frames packets received from the Network layer.
48 bits (6 bytes)
Router
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.

3. Which two fields are contained within an IEEE Ethernet frame header?
Data Link
Transport
The Session layer sets up - maintains - and terminates sessions between applications.
Source and destination MAC address and FCS field

4. Which layer is represented by bits?
183/B7
The Network layer provides logical addressing - typically IP addressing and routing.
Buffering - windowing - congestion avoidance
The Physical layer is responsible for transporting 1s and 0s in a digital signal.

5. Why does the data communication industry use the layered OSI reference model? (Name two)
Hub and repeater
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.
11000000.10101000.00001010.00001111

6. This layer supports flow control and sequencing.
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).
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
198.211.57.209

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

8. You want to implement a network medium that is not susceptible to EMI. Which type of cabling should you use?
Hub
Fiber-opticcable
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
183/B7

9. Which layer is represented by 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
The Network layer creates packets out of segments handed down from the Transport layer.
Network
Data Link & Physical

10. 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?
Hub
Router
The Transport layer user virtual circuits to create a reliable connection between two hosts.
Decrease the window size.

11. At which layer is routing implemented - enabling connections and path selection between two end systems?
Router
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
Decrease the window size.
The Network layer provides routing through an internetwork and logical addressing.

12. Name three types of connections that can use full duplex.
11000000.10101000.00001010.00001111
204.51.170.85
Switch to switch - host to host - switch to host
3 - 2 - 1 - none

13. Which layer segments and reassembles data into a data stream?
Transport
Hub
The Transport layer segments user data.
The Network layer provides logical addressing - typically IP addressing and routing.

14. Which of the following are 3 common types of flow control?
Switch or bridge
Buffering - windowing - congestion avoidance
132.210.184.166
00001010.00001011.00001100.01100011

15. What is the bit length and expression form of a MAC address?
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 bits (6 bytes)
84:D2:43:B3
The Physical layer is responsible for the electrical and mechanical connections between devices.

16. What are two purposes for segmentation with a bridge?
Hub
To create more collision domains and to add more bandwidth for users.
Layer 4
132.210.184.166

17. Acknowledgments - sequencing - and flow control are characteristics of which OSI layer?
Router
Layer 4
198.211.57.209
RJ45 UTP crossover cable.

18. Name four router functions.
84:D2:43:B3
Packet switching - Packet filtering - Internetwork communication - Path selection
Network
Switch to switch - host to host - switch to host

19. 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.
Data Link (LLC sublayer)
Switch or bridge
10101100.00010000.00010100.00110111

20. 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 Transport layer segments user data.
Switch to switch - host to host - switch to host
The Presentation layer makes sure that data is in a readable format for the Application layer.

21. 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.
Buffering - windowing - congestion avoidance
Segments - packets - frames - bits
The Physical layer is responsible for the electrical and mechanical connections between devices.

22. 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.
The Session layer sets up - maintains - and terminates sessions between applications.
Layer 4
To provide a means for the receiver to govern the amount of data sent by the sender.

23. What type of RJ45 UTP cable is used between switches?
204.51.170.85
132.210.184.166
RJ45 UTP crossover cable.
Data Link

24. Which layer provides logical addressing that routers will use for path determination?
The Network layer provides logical addressing - typically IP addressing and routing.
D8:1B:3D:76
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.
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.

25. This device uses hardware addresses to filter a network.
The Data Link layer frames packets received from the Network layer.
Segments - packets - frames - bits
Bridge or switch
Data - segment - packet - frame - bit

26. Which layer combines bits into bytes and bytes into frames - uses MAC addressing - and provides error detection?
Bridge or switch
CA:F5:83:EB
00001010.00001011.00001100.01100011
The Data Link layer is responsible for the framing of data packets.

27. Ethernet is defined at these layers.
D8:1B:3D:76
Data Link & Physical
198.211.57.209
11000000.10101000.00001010.00001111

28. This device breaks up collision domains and broadcast domains.
Router
The Physical layer is responsible for the electrical and mechanical connections between devices.
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 Session layer creates sessions between different hosts' applications.

29. Convert 11001100.00110011.10101010.01010101 to decimal IP format.
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
00001010.00001011.00001100.01100011
Data - segment - packet - frame - bit
204.51.170.85

30. Which layer provides the physical transmission of the data and handles error notification - network topology - and flow control?
The Data Link layer is responsible for the framing of data packets.
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
Data Link
D8:1B:3D:76

31. This device sends and receives information about the Network layer.
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Router
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
10101100.00010000.00010100.00110111

32. 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?
132.210.184.166
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).
Router
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.

33. This layer uses service access points.
183/B7
Data Link (LLC sublayer)
RJ45 UTP crossover cable.
Fiber-opticcable

34. Which layer defines how data is formatted - presented - encoded - and converted for use on the network?
RJ45 UTP crossover cable.
The Presentation layer makes sure that data is in a readable format for the Application layer.
10101100.00010000.00010100.00110111
Data Link (LLC sublayer)

35. This device can never run full duplex.
Data - segment - packet - frame - bit
Hub
Source and destination MAC address and FCS field
The Data Link layer is responsible for the framing of data packets.

36. When data is encapsulated - which is the correct order?
Data - segment - packet - frame - bit
The Data Link layer is responsible for the framing of data packets.
Fiber-opticcable
00001010.00001011.00001100.01100011

37. 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.
RJ45 UTP rolled cable.
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.

38. Which layer is responsible for creating - managing - and terminating sessions between applications?
10101100.00010000.00010100.00110111
Layer 4
Network
The Session layer sets up - maintains - and terminates sessions between applications.

39. Convert 11001010.11110101.10000011.11101011 to hexadecimal format.
Router
CA:F5:83:EB
Hub and repeater
3 - 2 - 1 - none

40. Convert 192.168.10.15 to binary format.
The Transport layer user virtual circuits to create a reliable connection between two hosts.
Router
11000000.10101000.00001010.00001111
Hub and repeater

41. Routers operate at layer __. LAN switches operate at layer __. Ethernet hubs operate at layer __. Word processing operates at layer __.
48 bits (6 bytes)
10101100.00010000.00010100.00110111
Fiber-opticcable
3 - 2 - 1 - none

42. Which layer specifies voltage - wire speed - and pinout cables and moves bits between devices?
The Transport layer user virtual circuits to create a reliable connection between two hosts.
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
The Physical layer is responsible for the electrical and mechanical connections between devices.

43. This device can measure the distance to a remote network.
Router
RJ45 UTP rolled cable.
The Session layer sets up - maintains - and terminates sessions between applications.
Bridge or switch

44. Which layer 1 devices can be used to enlarge the area covered by a single LAN segment?
Hub and repeater
The Data Link layer is responsible for the framing of data packets.
The Physical layer is responsible for the electrical and mechanical connections between devices.
Data Link (LLC sublayer)

45. You have the following binary number: 10110111 - What are the decimal and hexadecimal equivalents?
The Network layer provides routing through an internetwork and logical addressing.
183/B7
Data Link
The Physical layer is responsible for transporting 1s and 0s in a digital signal.

46. 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?
3 - 2 - 1 - none
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
Source and destination MAC address and FCS field
The Transport layer user virtual circuits to create a reliable connection between two hosts.

47. Which layer is represented by segments?
The Transport layer segments user data.
D8:1B:3D:76
The Data Link layer frames packets received from the Network layer.
The Data Link layer is responsible for the framing of data packets.

48. Convert 10000100.11010010.01000011.10110011 to hexadecimal format.
84:D2:43:B3
11000000.10101000.00001010.00001111
The Data Link layer is responsible for the framing of data packets.
10101100.00010000.00010100.00110111

49. This layer creates a virtual circuit before transmitting between two end stations.
To create more collision domains and to add more bandwidth for users.
Hub
11000000.10101000.00001010.00001111
Transport

50. This device creates many smaller collision domains - but the network is still one large broadcast domain.
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
204.51.170.85
Transport
Switch or bridge