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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 is represented by segments?
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 Transport layer segments user data.
Data Link & Physical
Transport

2. What is the bit length and expression form of a MAC address?
Data Link (LLC sublayer)
RJ45 UTP crossover cable.
84:D2:43:B3
48 bits (6 bytes)

3. Name four router functions.
Packet switching - Packet filtering - Internetwork communication - Path selection
The Physical layer is responsible for the electrical and mechanical connections between devices.
To create more collision domains and to add more bandwidth for users.
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.

4. 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
The Data Link layer is responsible for the framing of data packets.
Packet switching - Packet filtering - Internetwork communication - Path selection

5. You want to implement a network medium that is not susceptible to EMI. Which type of cabling should you use?
RJ45 UTP crossover cable.
Fiber-opticcable
132.210.184.166
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).

6. Convert 192.168.10.15 to binary format.
The Session layer sets up - maintains - and terminates sessions between applications.
84:D2:43:B3
11000000.10101000.00001010.00001111
3 - 2 - 1 - none

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?
Network
Decrease the window size.
11000000.10101000.00001010.00001111
Data Link (LLC sublayer)

8. Which layer combines bits into bytes and bytes into frames - uses MAC addressing - and provides error detection?
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.
Layer 4
RJ45 UTP rolled cable.
The Data Link layer is responsible for the framing of data packets.

9. What is the purpose of flow control?
Switch to switch - host to host - switch to host
Network
To provide a means for the receiver to govern the amount of data sent by the sender.
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

10. Which layer is represented by packets?
The Physical layer is responsible for the electrical and mechanical connections between devices.
The Network layer creates packets out of segments handed down from the Transport layer.
Switch or bridge
The Network layer provides routing through an internetwork and logical addressing.

11. 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?
Buffering - windowing - congestion avoidance
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.
CA:F5:83:EB

12. This device can never run full duplex.
Hub
Router
The Presentation layer makes sure that data is in a readable format for the Application layer.
198.211.57.209

13. Convert 10000100.11010010.10111000.10100110 to decimal IP format.
Hub
The Network layer provides logical addressing - typically IP addressing and routing.
132.210.184.166
204.51.170.85

14. This layer creates a virtual circuit before transmitting between two end stations.
183/B7
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
The Transport layer user virtual circuits to create a reliable connection between two hosts.
Transport

15. What are two purposes for segmentation with a bridge?
The Data Link layer frames packets received from the Network layer.
The Physical layer is responsible for the electrical and mechanical connections between devices.
Router
To create more collision domains and to add more bandwidth for users.

16. Which two fields are contained within an IEEE Ethernet frame header?
3 - 2 - 1 - none
Source and destination MAC address and FCS field
Data - segment - packet - frame - bit
10101100.00010000.00010100.00110111

17. Why does the data communication industry use the layered OSI reference model? (Name two)
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.
11000000.10101000.00001010.00001111
The Session layer creates sessions between different hosts' applications.

18. Convert 11011000.00011011.00111101.01110110 to hexadecimal format.
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
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).
Fiber-opticcable

19. Which layer provides the physical transmission of the data and handles error notification - network topology - and flow control?
Router
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Router
Data Link

20. This layer supports flow control and sequencing.
Router
Transport
The Network layer provides routing through an internetwork and logical addressing.
The Physical layer is responsible for transporting 1s and 0s in a digital signal.

21. 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
132.210.184.166
Router
The Transport layer user virtual circuits to create a reliable connection between two hosts.

22. What are two unique characteristics of half-duplex Ethernet when compared to full-duplex Ethernet?
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
The Network layer provides logical addressing - typically IP addressing and routing.
Network
The Session layer sets up - maintains - and terminates sessions between applications.

23. Routers operate at layer __. LAN switches operate at layer __. Ethernet hubs operate at layer __. Word processing operates at layer __.
Transport
3 - 2 - 1 - none
132.210.184.166
The Session layer creates sessions between different hosts' applications.

24. Which layer specifies voltage - wire speed - and pinout cables and moves bits between devices?
The Transport layer segments user data.
10101100.00010000.00010100.00110111
3 - 2 - 1 - none
The Physical layer is responsible for the electrical and mechanical connections between devices.

25. You have the following binary number: 10110111 - What are the decimal and hexadecimal equivalents?
00001010.00001011.00001100.01100011
Hub and repeater
84:D2:43:B3
183/B7

26. Acknowledgments - sequencing - and flow control are characteristics of which OSI layer?
11000000.10101000.00001010.00001111
Layer 4
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
Switch to switch - host to host - switch to host

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

28. Convert 10000100.11010010.01000011.10110011 to hexadecimal format.
84:D2:43:B3
To create more collision domains and to add more bandwidth for users.
Packet switching - Packet filtering - Internetwork communication - Path selection
Data Link

29. Which layer is responsible for converting data packets from the Data Link layer into electrical signals?
The Network layer creates packets out of segments handed down from the Transport layer.
The Session layer creates sessions between different hosts' applications.
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

30. This layer uses service access points.
11000000.10101000.00001010.00001111
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
204.51.170.85
Data Link (LLC sublayer)

31. What type of RJ45 UTP cable is used between switches?
Router
RJ45 UTP crossover cable.
The Data Link layer is responsible for the framing of data packets.
The Session layer creates sessions between different hosts' applications.

32. Ethernet is defined at these layers.
Layer 4
Network
Data Link & Physical
Transport

33. Which layer is responsible for creating - managing - and terminating sessions between applications?
The Physical layer is responsible for the electrical and mechanical connections between devices.
Data Link & Physical
The Transport layer segments user data.
The Session layer sets up - maintains - and terminates sessions between applications.

34. 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).
198.211.57.209
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
11000000.10101000.00001010.00001111

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

36. Convert 172.16.20.55 to binary format.
Packet switching - Packet filtering - Internetwork communication - Path selection
10101100.00010000.00010100.00110111
Segments - packets - frames - bits
D8:1B:3D:76

37. At which layer is routing implemented - enabling connections and path selection between two end systems?
Switch to switch - host to host - switch to host
Data Link
The Network layer provides routing through an internetwork and logical addressing.
Data - segment - packet - frame - bit

38. Which of the following are 3 common types of flow control?
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
Buffering - windowing - congestion avoidance
Router
Transport

39. Convert 11001010.11110101.10000011.11101011 to hexadecimal format.
84:D2:43:B3
CA:F5:83:EB
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).

40. Which layer is represented by frames?
Hub
The Data Link layer frames packets received from the Network layer.
Segments - packets - frames - bits
Buffering - windowing - congestion avoidance

41. When data is encapsulated - which is the correct order?
Data - segment - packet - frame - bit
10101100.00010000.00010100.00110111
48 bits (6 bytes)
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).

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

43. 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.
The Physical layer is responsible for the electrical and mechanical connections between devices.
Router
Switch to switch - host to host - switch to host

44. This device creates many smaller collision domains - but the network is still one large broadcast domain.
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
3 - 2 - 1 - none
Switch or bridge
198.211.57.209

45. Logical addressing is used at this layer.
Network
D8:1B:3D:76
Segments - packets - frames - bits
To create more collision domains and to add more bandwidth for users.

46. Convert 10.11.12.99 to binary format.
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
The Network layer creates packets out of segments handed down from the Transport layer.
00001010.00001011.00001100.01100011
Segments - packets - frames - bits

47. This device creates one big collision domain and one large broadcast domain.
To provide a means for the receiver to govern the amount of data sent by the sender.
Hub
The Session layer creates sessions between different hosts' applications.
Segments - packets - frames - bits

48. Which layer manages device addressing - tracks the location of devices on the network - and determines the best way to move data?
48 bits (6 bytes)
11000000.10101000.00001010.00001111
Network
Packet switching - Packet filtering - Internetwork communication - Path selection

49. 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?
Router
183/B7
RJ45 UTP rolled cable.
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.

50. This device uses hardware addresses to filter a network.
Bridge or switch
Network
The Network layer provides logical addressing - typically IP addressing and routing.
204.51.170.85