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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 provides the physical transmission of the data and handles error notification - network topology - and flow control?
Data Link
183/B7
Switch or bridge
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.

2. Convert 11011000.00011011.00111101.01110110 to hexadecimal format.
D8:1B:3D:76
The Transport layer user virtual circuits to create a reliable connection between two hosts.
Layer 4
Switch to switch - host to host - switch to host

3. Which layer is represented by packets?
RJ45 UTP crossover cable.
Router
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.

4. Name four router functions.
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.
48 bits (6 bytes)
The Physical layer is responsible for the electrical and mechanical connections between devices.
Packet switching - Packet filtering - Internetwork communication - Path selection

5. Why does the data communication industry use the layered OSI reference model? (Name two)
Layer 4
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.
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

6. Which layer 1 devices can be used to enlarge the area covered by a single LAN segment?
The Data Link layer is responsible for the framing of data packets.
11000000.10101000.00001010.00001111
Data Link
Hub and repeater

7. 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?
204.51.170.85
00001010.00001011.00001100.01100011
Decrease the window size.
RJ45 UTP rolled cable.

8. Logical addressing is used at this layer.
The Network layer creates packets out of segments handed down from the Transport layer.
Network
Source and destination MAC address and FCS field
The Presentation layer makes sure that data is in a readable format for the Application layer.

9. Convert 10000100.11010010.10111000.10100110 to decimal IP format.
132.210.184.166
198.211.57.209
Data - segment - packet - frame - bit
00001010.00001011.00001100.01100011

10. Convert 172.16.20.55 to binary format.
Transport
10101100.00010000.00010100.00110111
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 or bridge

11. Convert 10.11.12.99 to binary format.
00001010.00001011.00001100.01100011
Bridge or switch
183/B7
The Data Link layer frames packets received from the Network layer.

12. What is the bit length and expression form of a MAC address?
The Network layer creates packets out of segments handed down from the Transport layer.
204.51.170.85
48 bits (6 bytes)
Router

13. Convert 192.168.10.15 to binary format.
11000000.10101000.00001010.00001111
Transport
3 - 2 - 1 - none
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.

14. This layer supports flow control and sequencing.
Transport
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
The Data Link layer is responsible for the framing of data packets.

15. Convert 11000110.11010011.00111001.11010001 to decimal IP format.
198.211.57.209
Decrease the window size.
Layer 4
Data Link

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

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17. Which layer is represented by frames?
The Session layer creates sessions between different hosts' applications.
The Data Link layer frames packets received from the Network layer.
Router
To create more collision domains and to add more bandwidth for users.

18. Name three types of connections that can use full duplex.
10101100.00010000.00010100.00110111
Data Link (LLC sublayer)
Buffering - windowing - congestion avoidance
Switch to switch - host to host - switch to host

19. Which of the following are 3 common types of flow control?
Data - segment - packet - frame - bit
Switch to switch - host to host - switch to host
Buffering - windowing - congestion avoidance
To create more collision domains and to add more bandwidth for users.

20. Convert 11001100.00110011.10101010.01010101 to decimal IP format.
RJ45 UTP crossover cable.
204.51.170.85
The Network layer creates packets out of segments handed down from the Transport layer.
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.

21. This device can measure the distance to a remote network.
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.
Router
Data Link

22. This layer uses service access points.
204.51.170.85
48 bits (6 bytes)
Router
Data Link (LLC sublayer)

23. How does a host on an Ethernet LAN know when to transmit after a collision has occurred? (Name two)
D8:1B:3D:76
198.211.57.209
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)

24. What are two unique characteristics of half-duplex Ethernet when compared to full-duplex Ethernet?
Source and destination MAC address and FCS field
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.
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
Hub and repeater

25. Which layer is responsible for converting data packets from the Data Link layer into electrical signals?
Hub and repeater
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.
The Data Link layer frames packets received from the Network layer.

26. 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
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.
Source and destination MAC address and FCS field
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).

27. Which layer provides logical addressing that routers will use for path determination?
The Session layer creates sessions between different hosts' applications.
The Network layer provides logical addressing - typically IP addressing and routing.
204.51.170.85
The Physical layer is responsible for transporting 1s and 0s in a digital signal.

28. What is the purpose of flow control?
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
To provide a means for the receiver to govern the amount of data sent by the sender.
198.211.57.209
Data Link & Physical

29. Which layer segments and reassembles data into a data stream?
Hub and repeater
The Network layer provides routing through an internetwork and logical addressing.
48 bits (6 bytes)
Transport

30. This device can never run full duplex.
The Network layer creates packets out of segments handed down from the Transport layer.
Data Link
The Network layer provides routing through an internetwork and logical addressing.
Hub

31. This device uses hardware addresses to filter a network.
Switch to switch - host to host - switch to host
Bridge or switch
The Data Link layer is responsible for the framing of data packets.
The Network layer provides logical addressing - typically IP addressing and routing.

32. Which layer is represented by segments?
Fiber-opticcable
Transport
Packet switching - Packet filtering - Internetwork communication - Path selection
The Transport layer segments user data.

33. Ethernet is defined at these layers.
Router
Transport
Data Link & Physical
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

34. What type of RJ45 UTP cable do you use to connect a PC's COM port to a router or switch console port?
D8:1B:3D:76
Transport
RJ45 UTP rolled cable.
Hub and repeater

35. Which layer is represented by bits?
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
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.
The Session layer creates sessions between different hosts' applications.

36. Which layer manages device addressing - tracks the location of devices on the network - and determines the best way to move data?
CA:F5:83:EB
Router
Network
The Session layer creates sessions between different hosts' applications.

37. This device creates one big collision domain and one large broadcast domain.
The Network layer provides logical addressing - typically IP addressing and routing.
Hub
The Network layer creates packets out of segments handed down from the Transport layer.
The Session layer sets up - maintains - and terminates sessions between applications.

38. You have the following binary number: 10110111 - What are the decimal and hexadecimal equivalents?
183/B7
Hub and repeater
Packet switching - Packet filtering - Internetwork communication - Path selection
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.

39. Acknowledgments - sequencing - and flow control are characteristics of which OSI layer?
Layer 4
CA:F5:83:EB
Decrease the window size.
The Transport layer user virtual circuits to create a reliable connection between two hosts.

40. What are two purposes for segmentation with a bridge?
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).
Transport
To create more collision domains and to add more bandwidth for users.
11000000.10101000.00001010.00001111

41. You want to implement a network medium that is not susceptible to EMI. Which type of cabling should you use?
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 Transport layer segments user data.
Fiber-opticcable
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.

42. This layer creates a virtual circuit before transmitting between two end stations.
Data Link & Physical
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
The Presentation layer makes sure that data is in a readable format for the Application layer.
Transport

43. What type of RJ45 UTP cable is used between switches?
Router
CA:F5:83:EB
Network
RJ45 UTP crossover cable.

44. Convert 11001010.11110101.10000011.11101011 to hexadecimal format.
Network
The Transport layer segments user data.
CA:F5:83:EB
11000000.10101000.00001010.00001111

45. Routers operate at layer __. LAN switches operate at layer __. Ethernet hubs operate at layer __. Word processing operates at layer __.
To provide a means for the receiver to govern the amount of data sent by the sender.
The Network layer creates packets out of segments handed down from the Transport layer.
3 - 2 - 1 - none
The Transport layer segments user data.

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?
Layer 4
Switch or bridge
Data Link (LLC sublayer)
The Transport layer user virtual circuits to create a reliable connection between two hosts.

47. 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.
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.
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

48. This device sends and receives information about the Network layer.
Data - segment - packet - frame - bit
84:D2:43:B3
Router
Switch or bridge

49. Put the following in order of encapsulation: Packets - Frames - Bits - Segments
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
Segments - packets - frames - bits
The Data Link layer frames packets received from the Network layer.

50. 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
Layer 4
48 bits (6 bytes)