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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 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?
Segments - packets - frames - bits
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 routing through an internetwork and logical addressing.
The Network layer creates packets out of segments handed down from the Transport layer.

2. Which layer combines bits into bytes and bytes into frames - uses MAC addressing - and provides error detection?
The Data Link layer is responsible for the framing of data packets.
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
11000000.10101000.00001010.00001111
Switch to switch - host to host - switch to host

3. Which layer 1 devices can be used to enlarge the area covered by a single LAN segment?
Data - segment - packet - frame - bit
Hub and repeater
132.210.184.166
Bridge or switch

4. What are two unique characteristics of half-duplex Ethernet when compared to full-duplex Ethernet?
183/B7
Packet switching - Packet filtering - Internetwork communication - Path selection
The Network layer provides routing through an internetwork and logical addressing.
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.

5. Which layer is represented by bits?
Network
The Transport layer user virtual circuits to create a reliable connection between two hosts.
Transport
The Physical layer is responsible for transporting 1s and 0s in a digital signal.

6. What is the purpose of flow control?
The Network layer provides routing through an internetwork and logical addressing.
Buffering - windowing - congestion avoidance
To provide a means for the receiver to govern the amount of data sent by the sender.
Transport

7. Why does the data communication industry use the layered OSI reference model? (Name two)
The Network layer provides routing through an internetwork and logical addressing.
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.
Transport
Network

8. Which layer is responsible for creating - managing - and terminating sessions between applications?
The Transport layer segments user data.
Hub
RJ45 UTP crossover cable.
The Session layer sets up - maintains - and terminates sessions between applications.

9. 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
Router
3 - 2 - 1 - none
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 - segment - packet - frame - bit

10. This device can never run full duplex.
Transport
00001010.00001011.00001100.01100011
Hub
The Physical layer is responsible for transporting 1s and 0s in a digital signal.

11. Which layer provides the physical transmission of the data and handles error notification - network topology - and flow control?
Source and destination MAC address and FCS field
The Network layer provides logical addressing - typically IP addressing and routing.
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.

12. Convert 172.16.20.55 to binary format.
CA:F5:83:EB
48 bits (6 bytes)
204.51.170.85
10101100.00010000.00010100.00110111

13. This device can measure the distance to a remote 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.
RJ45 UTP crossover cable.
Router
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.

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?
To provide a means for the receiver to govern the amount of data sent by the sender.
The Data Link layer is responsible for the framing of data packets.
Decrease the window size.
Source and destination MAC address and FCS field

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

16. Which layer provides logical addressing that routers will use for path determination?
The Network layer provides logical addressing - typically IP addressing and routing.
00001010.00001011.00001100.01100011
Switch or bridge
Data Link (LLC sublayer)

17. Put the following in order of encapsulation: Packets - Frames - Bits - Segments
11000000.10101000.00001010.00001111
D8:1B:3D:76
Segments - packets - frames - bits
183/B7

18. Logical addressing is used at this layer.
Network
The Session layer creates sessions between different hosts' applications.
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).

19. Name three types of connections that can use full duplex.
3 - 2 - 1 - none
The Session layer sets up - maintains - and terminates sessions between applications.
48 bits (6 bytes)
Switch to switch - host to host - switch to host

20. This device creates many smaller collision domains - but the network is still one large broadcast domain.
Router
Switch or bridge
Hub
Data Link

21. Which layer specifies voltage - wire speed - and pinout cables and moves bits between devices?
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
Data Link (LLC sublayer)
Bridge or switch
The Physical layer is responsible for the electrical and mechanical connections between devices.

22. Convert 192.168.10.15 to binary format.
Fiber-opticcable
11000000.10101000.00001010.00001111
Data Link & Physical
Hub

23. 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.
Transport
Fiber-opticcable
Buffering - windowing - congestion avoidance

24. What type of RJ45 UTP cable is used between switches?
Router
The Network layer provides logical addressing - typically IP addressing and routing.
RJ45 UTP crossover cable.
Transport

25. Convert 10000100.11010010.10111000.10100110 to decimal IP format.
Switch or bridge
Layer 4
The Network layer provides routing through an internetwork and logical addressing.
132.210.184.166

26. Which layer is responsible for converting data packets from the Data Link layer into electrical signals?
Router
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.
183/B7
Layer 4

27. Which layer is represented by segments?
RJ45 UTP rolled cable.
Buffering - windowing - congestion avoidance
The Transport layer segments user data.
The Session layer creates sessions between different hosts' applications.

28. Segmentation of a data stream happens at which layer of the OSI model?
Router
Transport
132.210.184.166
The Session layer creates sessions between different hosts' applications.

29. Ethernet is defined at these layers.
Data Link & Physical
The Data Link layer is responsible for the framing of data packets.
198.211.57.209
To provide a means for the receiver to govern the amount of data sent by the sender.

30. Which of the following are 3 common types of flow control?
11000000.10101000.00001010.00001111
132.210.184.166
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Buffering - windowing - congestion avoidance

31. What are two purposes for segmentation with a bridge?
Router
To create more collision domains and to add more bandwidth for users.
Buffering - windowing - congestion avoidance
Packet switching - Packet filtering - Internetwork communication - Path selection

32. Which layer defines how data is formatted - presented - encoded - and converted for use on the network?
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.
132.210.184.166
Packet switching - Packet filtering - Internetwork communication - Path selection

33. This layer supports flow control and sequencing.
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.
84:D2:43:B3
Transport

34. Convert 11001100.00110011.10101010.01010101 to decimal IP format.
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Source and destination MAC address and FCS field
Transport
204.51.170.85

35. This device breaks up collision domains and broadcast domains.
Router
RJ45 UTP rolled cable.
The Session layer creates sessions between different hosts' applications.
Transport

36. Convert 11011000.00011011.00111101.01110110 to hexadecimal format.
Data Link
D8:1B:3D:76
Bridge or switch
10101100.00010000.00010100.00110111

37. Routers operate at layer __. LAN switches operate at layer __. Ethernet hubs operate at layer __. Word processing operates at layer __.
The Physical layer is responsible for the electrical and mechanical connections between devices.
Decrease the window size.
Switch to switch - host to host - switch to host
3 - 2 - 1 - none

38. Convert 10.11.12.99 to binary format.
CA:F5:83:EB
48 bits (6 bytes)
00001010.00001011.00001100.01100011
RJ45 UTP rolled cable.

39. Convert 10000100.11010010.01000011.10110011 to hexadecimal format.
The Presentation layer makes sure that data is in a readable format for the Application layer.
Router
84:D2:43:B3
11000000.10101000.00001010.00001111

40. Which layer is represented by packets?
The Network layer creates packets out of segments handed down from the Transport layer.
Source and destination MAC address and FCS field
Transport
Router

41. Which layer manages device addressing - tracks the location of devices on the network - and determines the best way to move data?
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
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
D8:1B:3D:76

42. Convert 11001010.11110101.10000011.11101011 to hexadecimal format.
The Session layer sets up - maintains - and terminates sessions between applications.
Router
CA:F5:83:EB
Buffering - windowing - congestion avoidance

43. You have the following binary number: 10110111 - What are the decimal and hexadecimal equivalents?
183/B7
Source and destination MAC address and FCS field
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.

44. 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
The Data Link layer is responsible for the framing of data packets.
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 Data Link layer frames packets received from the Network layer.

45. At which layer is routing implemented - enabling connections and path selection between two end systems?
Network
Data Link
The Network layer provides routing through an internetwork and logical addressing.
Layer 4

46. Convert 11000110.11010011.00111001.11010001 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.
198.211.57.209
Transport
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.

47. Which layer is represented by frames?
3 - 2 - 1 - none
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
Network
The Data Link layer frames packets received from the Network layer.

48. This device creates one big collision domain and one large broadcast domain.
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.
The Session layer creates sessions between different hosts' applications.
The Network layer creates packets out of segments handed down from the Transport layer.

49. You want to implement a network medium that is not susceptible to EMI. Which type of cabling should you use?
The Transport layer segments user data.
The Physical layer is responsible for the electrical and mechanical connections between devices.
Hub
Fiber-opticcable

50. 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?
Network
Transport
183/B7
The Transport layer user virtual circuits to create a reliable connection between two hosts.