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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. This layer uses service access points.
Data Link (LLC sublayer)
The Data Link layer frames packets received from the Network layer.
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.

2. Acknowledgments - sequencing - and flow control are characteristics of which OSI layer?
The Session layer sets up - maintains - and terminates sessions between applications.
Buffering - windowing - congestion avoidance
The Network layer creates packets out of segments handed down from the Transport layer.
Layer 4

3. Which layer provides logical addressing that routers will use for path determination?
The Network layer provides logical addressing - typically IP addressing and routing.
Data - segment - packet - frame - bit
Switch to switch - host to host - switch to host
Decrease the window size.

4. What type of RJ45 UTP cable is used between switches?
The Session layer creates sessions between different hosts' applications.
Segments - packets - frames - bits
Hub and repeater
RJ45 UTP crossover cable.

5. This layer supports flow control and sequencing.
The Presentation layer makes sure that data is in a readable format for the Application layer.
Transport
The Network layer creates packets out of segments handed down from the Transport layer.
10101100.00010000.00010100.00110111

6. This device can never run full duplex.
Hub
Source and destination MAC address and FCS field
The Network layer provides logical addressing - typically IP addressing and routing.
198.211.57.209

7. 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.
The Physical layer is responsible for the electrical and mechanical connections between devices.
Hub and repeater
183/B7

8. Name four router functions.
RJ45 UTP rolled cable.
Packet switching - Packet filtering - Internetwork communication - Path selection
The Network layer provides logical addressing - typically IP addressing and routing.
Hub and repeater

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
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.
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).

10. Convert 172.16.20.55 to binary format.
The Presentation layer makes sure that data is in a readable format for the Application layer.
10101100.00010000.00010100.00110111
Packet switching - Packet filtering - Internetwork communication - Path selection
Transport

11. Convert 11001100.00110011.10101010.01010101 to decimal IP format.
204.51.170.85
The Physical layer is responsible for the electrical and mechanical connections between devices.
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.

12. This device sends and receives information about the Network layer.
The Session layer creates sessions between different hosts' applications.
Data - segment - packet - frame - bit
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
Router

13. What are two unique characteristics of half-duplex Ethernet when compared to full-duplex Ethernet?
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).
Router
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.

14. Which layer segments and reassembles data into a data stream?
CA:F5:83:EB
Transport
Data - segment - packet - frame - bit
D8:1B:3D:76

15. At which layer is routing implemented - enabling connections and path selection between two end systems?
The Network layer provides routing through an internetwork and logical addressing.
Switch to switch - host to host - switch to host
48 bits (6 bytes)
The Presentation layer makes sure that data is in a readable format for the Application layer.

16. What type of RJ45 UTP cable do you use to connect a PC's COM port to a router or switch console port?
The Session layer creates sessions between different hosts' applications.
RJ45 UTP rolled cable.
Hub and repeater
Segments - packets - frames - bits

17. Convert 11011000.00011011.00111101.01110110 to hexadecimal format.
D8:1B:3D:76
Router
Packet switching - Packet filtering - Internetwork communication - Path selection
Network

18. This device can measure the distance to a remote network.
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
Router
The Network layer provides routing through an internetwork and logical addressing.
The Transport layer user virtual circuits to create a reliable connection between two hosts.

19. Convert 11000110.11010011.00111001.11010001 to decimal IP format.
Transport
198.211.57.209
Data Link (LLC sublayer)
To create more collision domains and to add more bandwidth for users.

20. 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?
The Presentation layer makes sure that data is in a readable format for the Application layer.
Transport
183/B7
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.

21. Which of the following are 3 common types of flow control?
Transport
11000000.10101000.00001010.00001111
Buffering - windowing - congestion avoidance
RJ45 UTP crossover cable.

22. Which layer is represented by frames?
The Physical layer is responsible for the electrical and mechanical connections between devices.
The Data Link layer frames packets received from the Network layer.
The Network layer provides routing through an internetwork and logical addressing.
84:D2:43:B3

23. Routers operate at layer __. LAN switches operate at layer __. Ethernet hubs operate at layer __. Word processing operates at layer __.
3 - 2 - 1 - none
198.211.57.209
Router
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.

24. When data is encapsulated - which is the correct order?
Data - segment - packet - frame - bit
Network
The Network layer provides routing through an internetwork and logical addressing.
RJ45 UTP crossover cable.

25. You have the following binary number: 10110111 - What are the decimal and hexadecimal equivalents?
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Router
183/B7
Network

26. Convert 192.168.10.15 to binary format.
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).
Switch or bridge
The Transport layer user virtual circuits to create a reliable connection between two hosts.
11000000.10101000.00001010.00001111

27. Segmentation of a data stream happens at which layer of the OSI model?
Bridge or switch
The Presentation layer makes sure that data is in a readable format for the Application layer.
Transport
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.

28. Which layer is represented by bits?
Layer 4
Hub and repeater
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Data Link & Physical

29. 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?
Segments - packets - frames - bits
Hub
Decrease the window size.
CA:F5:83:EB

30. Name three types of connections that can use full duplex.
Switch to switch - host to host - switch to host
Hub
The Presentation layer makes sure that data is in a readable format for the Application layer.
Hub and repeater

31. This layer creates a virtual circuit before transmitting between two end stations.
Transport
Router
Hub
Data - segment - packet - frame - bit

32. What is the purpose of flow control?
To provide a means for the receiver to govern the amount of data sent by the sender.
The Network layer provides logical addressing - typically IP addressing and routing.
Decrease the window size.
Router

33. Which layer is represented by packets?
The Network layer creates packets out of segments handed down from the Transport layer.
The Data Link layer frames packets received from the Network layer.
The Presentation layer makes sure that data is in a readable format for the Application layer.
Network

34. Convert 10.11.12.99 to binary format.
Data Link (LLC sublayer)
11000000.10101000.00001010.00001111
Bridge or switch
00001010.00001011.00001100.01100011

35. This device creates many smaller collision domains - but the network is still one large broadcast domain.
Data - segment - packet - frame - bit
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
Switch or bridge

36. This device uses hardware addresses to filter a network.
132.210.184.166
Bridge or switch
The Presentation layer makes sure that data is in a readable format for the Application layer.
Transport

37. Which two fields are contained within an IEEE Ethernet frame header?
Source and destination MAC address and FCS field
Data Link (LLC sublayer)
RJ45 UTP crossover cable.
204.51.170.85

38. Which layer 1 devices can be used to enlarge the area covered by a single LAN segment?
Hub and repeater
Router
The Presentation layer makes sure that data is in a readable format for the Application layer.
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.

39. What are two purposes for segmentation with a bridge?
Data Link
To create more collision domains and to add more bandwidth for users.
The Physical layer is responsible for the electrical and mechanical connections between devices.
Data - segment - packet - frame - bit

40. Which layer defines how data is formatted - presented - encoded - and converted for use on the 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
Data Link
Transport
The Presentation layer makes sure that data is in a readable format for the Application layer.

41. Which layer is represented by segments?
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).
D8:1B:3D:76
The Session layer creates sessions between different hosts' applications.
The Transport layer segments user data.

42. Put the following in order of encapsulation: Packets - Frames - Bits - Segments
Packet switching - Packet filtering - Internetwork communication - Path selection
Segments - packets - frames - bits
Decrease the window size.
11000000.10101000.00001010.00001111

43. Convert 11001010.11110101.10000011.11101011 to hexadecimal format.
Decrease the window size.
Data Link
CA:F5:83:EB
Router

44. Why does the data communication industry use the layered OSI reference model? (Name two)
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).
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.
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.

45. Ethernet is defined at these layers.
10101100.00010000.00010100.00110111
Data Link & Physical
198.211.57.209
D8:1B:3D:76

46. What is the bit length and expression form of a MAC address?
48 bits (6 bytes)
D8:1B:3D:76
84:D2:43:B3
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.

47. 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?
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
Bridge or switch
Switch or bridge
The Transport layer user virtual circuits to create a reliable connection between two hosts.

48. Which layer specifies voltage - wire speed - and pinout cables and moves bits between devices?
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 creates sessions between different hosts' applications.
The Physical layer is responsible for the electrical and mechanical connections between devices.
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.

49. Convert 10000100.11010010.10111000.10100110 to decimal IP format.
Hub
Data Link & Physical
11000000.10101000.00001010.00001111
132.210.184.166

50. This device creates one big collision domain and one large broadcast domain.
The Network layer provides routing through an internetwork and logical addressing.
Hub
Router
Switch or bridge