Test your basic knowledge |

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 10000100.11010010.01000011.10110011 to hexadecimal format.
The Transport layer user virtual circuits to create a reliable connection between two hosts.
48 bits (6 bytes)
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
84:D2:43:B3

2. Which layer is represented by packets?
To provide a means for the receiver to govern the amount of data sent by the sender.
Data - segment - packet - frame - bit
The Network layer creates packets out of segments handed down from the Transport layer.
Bridge or switch

3. Acknowledgments - sequencing - and flow control are characteristics of which OSI layer?
The Session layer creates sessions between different hosts' applications.
Layer 4
RJ45 UTP crossover cable.
3 - 2 - 1 - none

4. Convert 172.16.20.55 to binary format.
Switch to switch - host to host - switch to host
The Transport layer user virtual circuits to create a reliable connection between two hosts.
Transport
10101100.00010000.00010100.00110111

5. This device breaks up collision domains and broadcast domains.
Segments - packets - frames - bits
132.210.184.166
Router
The Physical layer is responsible for the electrical and mechanical connections between devices.

6. This device sends and receives information about the Network layer.
Fiber-opticcable
Segments - packets - frames - bits
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.
Router

7. This device creates one big collision domain and one large broadcast domain.
RJ45 UTP crossover cable.
The Network layer creates packets out of segments handed down from the Transport layer.
Bridge or switch
Hub

8. How does a host on an Ethernet LAN know when to transmit after a collision has occurred? (Name two)
Data Link
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
The Presentation layer makes sure that data is in a readable format for the Application layer.

9. Which layer specifies voltage - wire speed - and pinout cables and moves bits between devices?
Transport
The Physical layer is responsible for the electrical and mechanical connections between devices.
48 bits (6 bytes)
Data Link (LLC sublayer)

10. What are two unique characteristics of half-duplex Ethernet when compared to full-duplex Ethernet?
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.
10101100.00010000.00010100.00110111
Packet switching - Packet filtering - Internetwork communication - Path selection
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.

11. Which layer is represented by bits?
Decrease the window size.
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 Physical layer is responsible for transporting 1s and 0s in a digital signal.
D8:1B:3D:76

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

13. Convert 11011000.00011011.00111101.01110110 to hexadecimal format.
The Transport layer user virtual circuits to create a reliable connection between two hosts.
Transport
D8:1B:3D:76
To create more collision domains and to add more bandwidth for users.

14. Routers operate at layer __. LAN switches operate at layer __. Ethernet hubs operate at layer __. Word processing operates at layer __.
198.211.57.209
84:D2:43:B3
3 - 2 - 1 - none
The Network layer provides routing through an internetwork and logical addressing.

15. Name three types of connections that can use full duplex.
Switch to switch - host to host - switch to host
Data Link
Bridge or switch
10101100.00010000.00010100.00110111

16. Which of the following are 3 common types of flow control?
11000000.10101000.00001010.00001111
Buffering - windowing - congestion avoidance
CA:F5:83:EB
Packet switching - Packet filtering - Internetwork communication - Path selection

17. 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?
Buffering - windowing - congestion avoidance
Decrease the window size.
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.

18. You want to implement a network medium that is not susceptible to EMI. Which type of cabling should you use?
00001010.00001011.00001100.01100011
Fiber-opticcable
Source and destination MAC address and FCS field
Router

19. Convert 10.11.12.99 to binary format.
Network
00001010.00001011.00001100.01100011
Transport
Data - segment - packet - frame - bit

20. Which layer is represented by frames?
Packet switching - Packet filtering - Internetwork communication - Path selection
The Data Link layer frames packets received from the Network layer.
Network
48 bits (6 bytes)

21. Which layer defines how data is formatted - presented - encoded - and converted for use on the network?
Router
Transport
Source and destination MAC address and FCS field
The Presentation layer makes sure that data is in a readable format for the Application layer.

22. This layer uses service access points.
The Network layer provides logical addressing - typically IP addressing and routing.
10101100.00010000.00010100.00110111
The Transport layer user virtual circuits to create a reliable connection between two hosts.
Data Link (LLC sublayer)

23. Convert 11001100.00110011.10101010.01010101 to decimal IP format.
RJ45 UTP crossover cable.
Network
Fiber-opticcable
204.51.170.85

24. Which two fields are contained within an IEEE Ethernet frame header?
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.
Data Link (LLC sublayer)
Source and destination MAC address and FCS field
Hub

25. Convert 10000100.11010010.10111000.10100110 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.
132.210.184.166
Hub and repeater
Source and destination MAC address and FCS field

26. Which layer segments and reassembles data into a data stream?
Transport
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).
183/B7

27. 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.
204.51.170.85
Hub
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.

28. 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).
Data Link (LLC sublayer)
Switch or bridge
RJ45 UTP crossover cable.

29. 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.
00001010.00001011.00001100.01100011
198.211.57.209
The Session layer creates sessions between different hosts' applications.

30. When data is encapsulated - which is the correct order?
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.
198.211.57.209
Network
Data - segment - packet - frame - bit

31. What is the purpose of flow control?
The Data Link layer frames packets received from the Network layer.
The Network layer creates packets out of segments handed down from the Transport layer.
To provide a means for the receiver to govern the amount of data sent by the sender.
Decrease the window size.

32. 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.
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
Router
10101100.00010000.00010100.00110111

33. This device can never run full duplex.
3 - 2 - 1 - none
RJ45 UTP crossover cable.
Hub
132.210.184.166

34. This device creates many smaller collision domains - but the network is still one large broadcast domain.
Switch or bridge
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
Data Link & Physical
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.

35. Which layer provides the physical transmission of the data and handles error notification - network topology - and flow control?
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
Router
Data Link

36. This device can measure the distance to a remote network.
Router
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
The Presentation layer makes sure that data is in a readable format for the Application layer.

37. Convert 192.168.10.15 to binary format.
11000000.10101000.00001010.00001111
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
183/B7
RJ45 UTP crossover cable.

38. Why does the data communication industry use the layered OSI reference model? (Name two)
The Data Link layer is responsible for the framing of data packets.
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.
Switch to switch - host to host - switch to host
00001010.00001011.00001100.01100011

39. Which layer manages device addressing - tracks the location of devices on the network - and determines the best way to move data?
Data Link & Physical
Network
Segments - packets - frames - bits
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).

40. What type of RJ45 UTP cable is used between switches?
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
RJ45 UTP crossover cable.
The Network layer creates packets out of segments handed down from the Transport layer.
Switch or bridge

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

42. Which layer is responsible for creating - managing - and terminating sessions between applications?
Source and destination MAC address and FCS field
Switch or bridge
Router
The Session layer sets up - maintains - and terminates sessions between applications.

43. Segmentation of a data stream happens at which layer of the OSI model?
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
Transport
Data Link & Physical

44. Ethernet is defined at these layers.
CA:F5:83:EB
Data Link & Physical
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.
Router

45. Put the following in order of encapsulation: Packets - Frames - Bits - Segments
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
84:D2:43:B3
Segments - packets - frames - bits
Data Link

46. You have the following binary number: 10110111 - What are the decimal and hexadecimal equivalents?
11000000.10101000.00001010.00001111
The Network layer creates packets out of segments handed down from the Transport layer.
Transport
183/B7

47. What are two purposes for segmentation with a bridge?
Packet switching - Packet filtering - Internetwork communication - Path selection
The Presentation layer makes sure that data is in a readable format for the Application layer.
Data Link (LLC sublayer)
To create more collision domains and to add more bandwidth for users.

48. 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
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
Source and destination MAC address and FCS field

49. 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.
To create more collision domains and to add more bandwidth for users.
The Presentation layer makes sure that data is in a readable format for the Application layer.
Transport

50. What is the bit length and expression form of a MAC address?
Data - segment - packet - frame - bit
Switch to switch - host to host - switch to host
48 bits (6 bytes)
The Physical layer is responsible for the electrical and mechanical connections between devices.