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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 1 devices can be used to enlarge the area covered by a single LAN segment?
84:D2:43:B3
Decrease the window size.
Hub and repeater
RJ45 UTP rolled cable.

2. How does a host on an Ethernet LAN know when to transmit after a collision has occurred? (Name two)
Data Link
Router
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

3. This layer creates a virtual circuit before transmitting between two end stations.
Packet switching - Packet filtering - Internetwork communication - Path selection
Transport
Network
Decrease the window size.

4. Ethernet is defined at these layers.
Network
Data Link & Physical
Hub and repeater
CA:F5:83:EB

5. Which layer manages device addressing - tracks the location of devices on the network - and determines the best way to move data?
Bridge or switch
Layer 4
Network
Router

6. Which layer is responsible for converting data packets from the Data Link layer into electrical signals?
The Transport layer segments user data.
00001010.00001011.00001100.01100011
Data - segment - packet - frame - bit
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.

7. This device creates one big collision domain and one large broadcast domain.
Hub
183/B7
Network
Transport

8. At which layer is routing implemented - enabling connections and path selection between two end systems?
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Transport
11000000.10101000.00001010.00001111
The Network layer provides routing through an internetwork and logical addressing.

9. 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 Network layer creates packets out of segments handed down from the Transport layer.
Decrease the window size.
183/B7
Segments - packets - frames - bits

10. This layer uses service access points.
Router
Data Link (LLC sublayer)
Hub and repeater
198.211.57.209

11. What is the purpose of flow control?
The Session layer creates sessions between different hosts' applications.
Hub
To provide a means for the receiver to govern the amount of data sent by the sender.
Router

12. 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
Data Link & Physical
Router
The Transport layer user virtual circuits to create a reliable connection between two hosts.

13. Logical addressing is used at this layer.
Switch or bridge
To provide a means for the receiver to govern the amount of data sent by the sender.
Network
The Transport layer segments user data.

14. Put the following in order of encapsulation: Packets - Frames - Bits - Segments
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
Network
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

15. This layer supports flow control and sequencing.
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
Transport
Segments - packets - frames - bits
3 - 2 - 1 - none

16. Which layer segments and reassembles data into a data stream?
204.51.170.85
Transport
Hub
Data Link & Physical

17. Why does the data communication industry use the layered OSI reference model? (Name two)
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
To create more collision domains and to add more bandwidth for users.
The Network layer creates packets out of segments handed down from the Transport layer.

18. 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)
The Data Link layer is responsible for the framing of data packets.

19. Routers operate at layer __. LAN switches operate at layer __. Ethernet hubs operate at layer __. Word processing operates at layer __.
3 - 2 - 1 - none
Hub
CA:F5:83:EB
The Data Link layer is responsible for the framing of data packets.

20. Segmentation of a data stream happens at which layer of the OSI model?
D8:1B:3D:76
Transport
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
The Physical layer is responsible for transporting 1s and 0s in a digital signal.

21. Which layer is responsible for creating - managing - and terminating sessions between applications?
11000000.10101000.00001010.00001111
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).
Bridge or switch
The Session layer sets up - maintains - and terminates sessions between applications.

22. Which layer defines how data is formatted - presented - encoded - and converted for use on the network?
183/B7
Segments - packets - frames - bits
The Presentation layer makes sure that data is in a readable format for the Application layer.
Transport

23. This device can never run full duplex.
Transport
The Session layer sets up - maintains - and terminates sessions between applications.
48 bits (6 bytes)
Hub

24. What type of RJ45 UTP cable do you use to connect a PC's COM port to a router or switch console port?
00001010.00001011.00001100.01100011
RJ45 UTP rolled cable.
Buffering - windowing - congestion avoidance
Data Link & Physical

25. What are two unique characteristics of half-duplex Ethernet when compared to full-duplex Ethernet?
3 - 2 - 1 - none
Source and destination MAC address and FCS field
CA:F5:83:EB
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.

26. Convert 11000110.11010011.00111001.11010001 to decimal IP format.
198.211.57.209
183/B7
The Data Link layer frames packets received from the Network layer.
10101100.00010000.00010100.00110111

27. What are two purposes for segmentation with a bridge?
Buffering - windowing - congestion avoidance
To create more collision domains and to add more bandwidth for users.
Hub and repeater
The Transport layer segments user data.

28. 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
Decrease the window size.
Switch to switch - host to host - switch to host

29. Convert 10.11.12.99 to binary format.
183/B7
48 bits (6 bytes)
The Data Link layer frames packets received from the Network layer.
00001010.00001011.00001100.01100011

30. You want to implement a network medium that is not susceptible to EMI. Which type of cabling should you use?
Layer 4
Fiber-opticcable
The Data Link layer is responsible for the framing of data packets.
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).

31. 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.
Router
The Data Link layer is responsible for the framing of data packets.
The Transport layer segments user data.

32. Which layer provides the physical transmission of the data and handles error notification - network topology - and flow control?
Hub
Data Link
D8:1B:3D:76
Transport

33. Which of the following are 3 common types of flow control?
Buffering - windowing - congestion avoidance
The Data Link layer frames packets received from the Network 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.
183/B7

34. Convert 10000100.11010010.01000011.10110011 to hexadecimal format.
10101100.00010000.00010100.00110111
84:D2:43:B3
Fiber-opticcable
The Session layer creates sessions between different hosts' applications.

35. 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
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
Hub
The Session layer creates sessions between different hosts' applications.

36. Which layer is represented by bits?
00001010.00001011.00001100.01100011
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)
The Physical layer is responsible for transporting 1s and 0s in a digital signal.

37. Acknowledgments - sequencing - and flow control are characteristics of which OSI layer?
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.
Layer 4
The Presentation layer makes sure that data is in a readable format for the Application layer.

38. When data is encapsulated - which is the correct order?
CA:F5:83:EB
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
Data - segment - packet - frame - bit

39. Which layer is represented by packets?
The Network layer provides logical addressing - typically IP addressing and routing.
10101100.00010000.00010100.00110111
The Network layer creates packets out of segments handed down from the Transport layer.
Network

40. Name four router functions.
D8:1B:3D:76
10101100.00010000.00010100.00110111
Packet switching - Packet filtering - Internetwork communication - Path selection
Bridge or switch

41. This device sends and receives information about the Network layer.
Router
00001010.00001011.00001100.01100011
11000000.10101000.00001010.00001111
The Data Link layer is responsible for the framing of data packets.

42. This device uses hardware addresses to filter a network.
Layer 4
Router
84:D2:43:B3
Bridge or switch

43. Convert 10000100.11010010.10111000.10100110 to decimal IP format.
3 - 2 - 1 - none
48 bits (6 bytes)
The Data Link layer is responsible for the framing of data packets.
132.210.184.166

44. Convert 192.168.10.15 to binary format.
00001010.00001011.00001100.01100011
11000000.10101000.00001010.00001111
Switch or bridge
RJ45 UTP rolled cable.

45. What is the bit length and expression form of a MAC address?
198.211.57.209
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.
Segments - packets - frames - bits
48 bits (6 bytes)

46. You have the following binary number: 10110111 - What are the decimal and hexadecimal equivalents?
183/B7
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).
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.

47. 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
48 bits (6 bytes)
The Data Link layer frames packets received from the Network layer.
10101100.00010000.00010100.00110111
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).

48. Convert 11001100.00110011.10101010.01010101 to decimal IP format.
204.51.170.85
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.
The Network layer provides routing through an internetwork and logical addressing.

49. Which layer is represented by segments?
00001010.00001011.00001100.01100011
The Network layer provides logical addressing - typically IP addressing and routing.
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.

50. Which two fields are contained within an IEEE Ethernet frame header?
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).
Source and destination MAC address and FCS field
Hub and repeater