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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.
The Network layer creates packets out of segments handed down from the Transport layer.
198.211.57.209
Data Link (LLC sublayer)
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.

2. This device sends and receives information about 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.
84:D2:43:B3
Network
Router

3. Put the following in order of encapsulation: Packets - Frames - Bits - Segments
To create more collision domains and to add more bandwidth for users.
Segments - packets - frames - bits
The Network layer creates packets out of segments handed down from the Transport layer.
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.

4. What type of RJ45 UTP cable is used between switches?
48 bits (6 bytes)
The Transport layer user virtual circuits to create a reliable connection between two hosts.
RJ45 UTP crossover cable.
The Session layer sets up - maintains - and terminates sessions between applications.

5. Which layer is represented by bits?
198.211.57.209
Layer 4
CA:F5:83:EB
The Physical layer is responsible for transporting 1s and 0s in a digital signal.

6. 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.
RJ45 UTP rolled cable.
Hub
CA:F5:83:EB

7. Segmentation of a data stream happens at which layer of the OSI model?
D8:1B:3D:76
Transport
Buffering - windowing - congestion avoidance
Data Link

8. Convert 11001010.11110101.10000011.11101011 to hexadecimal format.
The Transport layer segments user data.
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
The Session layer creates sessions between different hosts' applications.
CA:F5:83:EB

9. Which layer is represented by packets?
Segments - packets - frames - bits
198.211.57.209
The Session layer creates sessions between different hosts' applications.
The Network layer creates packets out of segments handed down from the Transport layer.

10. Convert 10000100.11010010.10111000.10100110 to decimal IP format.
132.210.184.166
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
The Data Link layer frames packets received from the Network layer.
Transport

11. This layer supports flow control and sequencing.
Source and destination MAC address and FCS field
CA:F5:83:EB
Transport
Router

12. Which of the following are 3 common types of flow control?
Decrease the window size.
RJ45 UTP rolled cable.
D8:1B:3D:76
Buffering - windowing - congestion avoidance

13. Name three types of connections that can use full duplex.
Data Link (LLC sublayer)
Router
To create more collision domains and to add more bandwidth for users.
Switch to switch - host to host - switch to host

14. Which layer is represented by segments?
Decrease the window size.
To create more collision domains and to add more bandwidth for users.
Network
The Transport layer segments user data.

15. Which layer provides logical addressing that routers will use for path determination?
The Network layer provides logical addressing - typically IP addressing and routing.
Segments - packets - frames - bits
RJ45 UTP crossover cable.
Switch or bridge

16. Which layer is represented by frames?
Decrease the window size.
To create more collision domains and to add more bandwidth for users.
The Data Link layer frames packets received from the Network layer.
To provide a means for the receiver to govern the amount of data sent by the sender.

17. Routers operate at layer __. LAN switches operate at layer __. Ethernet hubs operate at layer __. Word processing operates at layer __.
The Presentation layer makes sure that data is in a readable format for the Application layer.
3 - 2 - 1 - none
198.211.57.209
The Network layer creates packets out of segments handed down from the Transport layer.

18. Why does the data communication industry use the layered OSI reference model? (Name two)
Decrease the window size.
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
The Physical layer is responsible for the electrical and mechanical connections between devices.

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

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20. 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.
CA:F5:83:EB
Transport

21. Which layer 1 devices can be used to enlarge the area covered by a single LAN segment?
Hub and repeater
84:D2:43:B3
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Network

22. Convert 11000110.11010011.00111001.11010001 to decimal IP 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).
The Presentation layer makes sure that data is in a readable format for the Application layer.
198.211.57.209
Data Link (LLC sublayer)

23. 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 Data Link layer frames packets received from the Network layer.
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Router
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).

24. 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?
Transport
The Transport layer user virtual circuits to create a reliable connection between two hosts.
The Presentation layer makes sure that data is in a readable format for the Application layer.
The Network layer provides routing through an internetwork and logical addressing.

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

26. Which layer is responsible for creating - managing - and terminating sessions between applications?
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 Session layer sets up - maintains - and terminates sessions between applications.
The Transport layer segments user data.
Buffering - windowing - congestion avoidance

27. Which layer combines bits into bytes and bytes into frames - uses MAC addressing - and provides error detection?
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
The Data Link layer is responsible for the framing of data packets.
The Session layer creates sessions between different hosts' applications.
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

28. This layer creates a virtual circuit before transmitting between two end stations.
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
84:D2:43:B3
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).

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.
Segments - packets - frames - bits
Buffering - windowing - congestion avoidance
RJ45 UTP crossover cable.

30. Convert 172.16.20.55 to binary format.
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.
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

31. You want to implement a network medium that is not susceptible to EMI. Which type of cabling should you use?
132.210.184.166
The Transport layer user virtual circuits to create a reliable connection between two hosts.
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Fiber-opticcable

32. You have the following binary number: 10110111 - What are the decimal and hexadecimal equivalents?
183/B7
To provide a means for the receiver to govern the amount of data sent by the sender.
RJ45 UTP rolled cable.
Hub and repeater

33. 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).
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.
11000000.10101000.00001010.00001111
The Network layer provides routing through an internetwork and logical addressing.

34. What are two purposes for segmentation with a bridge?
To create more collision domains and to add more bandwidth for users.
Data - segment - packet - frame - bit
Router
Hub

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

36. 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.
Source and destination MAC address and FCS field
Router
To create more collision domains and to add more bandwidth for users.

37. Convert 11011000.00011011.00111101.01110110 to hexadecimal format.
D8:1B:3D:76
The Presentation layer makes sure that data is in a readable format for the Application layer.
The Physical layer is responsible for the electrical and mechanical connections between devices.
Data Link & Physical

38. Acknowledgments - sequencing - and flow control are characteristics of which OSI layer?
Hub and repeater
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.
Bridge or switch
Layer 4

39. Name four router functions.
Data - segment - packet - frame - bit
183/B7
Packet switching - Packet filtering - Internetwork communication - Path selection
Data Link

40. Convert 11001100.00110011.10101010.01010101 to decimal IP format.
204.51.170.85
The Network layer creates packets out of segments handed down from the Transport layer.
10101100.00010000.00010100.00110111
The Physical layer is responsible for the electrical and mechanical connections between devices.

41. What is the bit length and expression form of a MAC address?
48 bits (6 bytes)
The Transport layer user virtual circuits to create a reliable connection between two hosts.
Router
Transport

42. What are two unique characteristics of half-duplex Ethernet when compared to full-duplex Ethernet?
11000000.10101000.00001010.00001111
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
Fiber-opticcable
The Physical layer is responsible for the electrical and mechanical connections between devices.

43. 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.
Transport
Network
Bridge or switch

44. When data is encapsulated - which is the correct order?
The Transport layer user virtual circuits to create a reliable connection between two hosts.
Data - segment - packet - frame - bit
Router
The Physical layer is responsible for transporting 1s and 0s in a digital signal.

45. Which layer manages device addressing - tracks the location of devices on the network - and determines the best way to move data?
Hub
Network
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.

46. This device creates many smaller collision domains - but the network is still one large broadcast domain.
10101100.00010000.00010100.00110111
Switch or bridge
To create more collision domains and to add more bandwidth for users.
The Network layer provides logical addressing - typically IP addressing and routing.

47. Which layer defines how data is formatted - presented - encoded - and converted for use on the network?
Transport
11000000.10101000.00001010.00001111
The Presentation layer makes sure that data is in a readable format for the Application layer.
To create more collision domains and to add more bandwidth for users.

48. 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?
The Session layer creates sessions between different hosts' applications.
Decrease the window size.
To create more collision domains and to add more bandwidth for users.
132.210.184.166

49. 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.
Switch to switch - host to host - switch to host
Bridge or switch
The Network layer provides logical addressing - typically IP addressing and routing.

50. This device can never run full duplex.
Hub
Transport
To provide a means for the receiver to govern the amount of data sent by the sender.
Data Link