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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 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.
To provide a means for the receiver to govern the amount of data sent by the sender.
10101100.00010000.00010100.00110111
The Session layer creates sessions between different hosts' applications.

2. Which layer 1 devices can be used to enlarge the area covered by a single LAN segment?
Hub and repeater
The Network layer creates packets out of segments handed down from the Transport layer.
Switch or bridge
Network

3. 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?
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.
Transport
Buffering - windowing - congestion avoidance

4. Logical addressing is used at this layer.
Network
Data Link
11000000.10101000.00001010.00001111
Hub and repeater

5. What is the purpose of flow control?
Router
Network
To provide a means for the receiver to govern the amount of data sent by the sender.
RJ45 UTP rolled cable.

6. Which layer is represented by segments?
To create more collision domains and to add more bandwidth for users.
Transport
The Transport layer segments user data.
The Network layer creates packets out of segments handed down from the Transport layer.

7. Which layer specifies voltage - wire speed - and pinout cables and moves bits between devices?
00001010.00001011.00001100.01100011
Data - segment - packet - frame - bit
The Physical layer is responsible for the electrical and mechanical connections between devices.
RJ45 UTP crossover cable.

8. Name four router functions.
Data Link (LLC sublayer)
The Physical layer is responsible for the electrical and mechanical connections between devices.
Decrease the window size.
Packet switching - Packet filtering - Internetwork communication - Path selection

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

10. This device breaks up collision domains and broadcast domains.
CA:F5:83:EB
Router
Bridge or switch
204.51.170.85

11. Which layer is represented by bits?
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
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.
Switch or bridge
00001010.00001011.00001100.01100011

12. 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 Transport layer segments user data.
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
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.

13. Convert 192.168.10.15 to binary format.
11000000.10101000.00001010.00001111
Network
RJ45 UTP crossover cable.
Decrease the window size.

14. This device sends and receives information about the Network layer.
Network
Router
Transport
The Transport layer segments user data.

15. This device creates many smaller collision domains - but the network is still one large broadcast domain.
The Transport layer user virtual circuits to create a reliable connection between two hosts.
3 - 2 - 1 - none
11000000.10101000.00001010.00001111
Switch or bridge

16. Convert 10.11.12.99 to binary format.
00001010.00001011.00001100.01100011
Data Link (LLC sublayer)
Router
The Transport layer user virtual circuits to create a reliable connection between two hosts.

17. This layer uses service access points.
Decrease the window size.
Data Link (LLC sublayer)
The Physical layer is responsible for the electrical and mechanical connections between devices.
Segments - packets - frames - bits

18. Acknowledgments - sequencing - and flow control are characteristics of which OSI layer?
Layer 4
10101100.00010000.00010100.00110111
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
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.

19. At which layer is routing implemented - enabling connections and path selection between two end systems?
The Session layer sets up - maintains - and terminates sessions between applications.
The Network layer provides routing through an internetwork and logical addressing.
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).
RJ45 UTP rolled cable.

20. Which layer is represented by frames?
To provide a means for the receiver to govern the amount of data sent by the sender.
Hub
Data Link (LLC sublayer)
The Data Link layer frames packets received from the Network layer.

21. You have the following binary number: 10110111 - What are the decimal and hexadecimal equivalents?
To create more collision domains and to add more bandwidth for users.
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
183/B7
The Network layer provides logical addressing - typically IP addressing and routing.

22. Which layer provides the physical transmission of the data and handles error notification - network topology - and flow control?
Data Link
Hub
Router
84:D2:43:B3

23. Which two fields are contained within an IEEE Ethernet frame header?
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
48 bits (6 bytes)
00001010.00001011.00001100.01100011

24. 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 Session layer sets up - maintains - and terminates sessions between applications.
The Presentation layer makes sure that data is in a readable format for the Application layer.
Network

25. Routers operate at layer __. LAN switches operate at layer __. Ethernet hubs operate at layer __. Word processing operates at layer __.
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).
Data - segment - packet - frame - bit
3 - 2 - 1 - none
Router

26. Which layer provides logical addressing that routers will use for path determination?
The Network layer provides logical addressing - typically IP addressing and routing.
10101100.00010000.00010100.00110111
Switch or bridge
Data Link (LLC sublayer)

27. Which layer defines how data is formatted - presented - encoded - and converted for use on the network?
Hub and repeater
Router
Transport
The Presentation layer makes sure that data is in a readable format for the Application layer.

28. Which layer is responsible for creating - managing - and terminating sessions between applications?
Source and destination MAC address and FCS field
Packet switching - Packet filtering - Internetwork communication - Path selection
The Session layer sets up - maintains - and terminates sessions between applications.
RJ45 UTP rolled cable.

29. You want to implement a network medium that is not susceptible to EMI. Which type of cabling should you use?
Fiber-opticcable
204.51.170.85
11000000.10101000.00001010.00001111
The Data Link layer frames packets received from the Network layer.

30. Convert 11001100.00110011.10101010.01010101 to decimal IP format.
204.51.170.85
To provide a means for the receiver to govern the amount of data sent by the sender.
CA:F5:83:EB
Fiber-opticcable

31. 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
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
3 - 2 - 1 - none

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

33. Which layer combines bits into bytes and bytes into frames - uses MAC addressing - and provides error detection?
To create more collision domains and to add more bandwidth for users.
Transport
The Data Link layer is responsible for the framing of data packets.
132.210.184.166

34. This device can never run full duplex.
Router
Packet switching - Packet filtering - Internetwork communication - Path selection
Hub
To create more collision domains and to add more bandwidth for users.

35. Convert 172.16.20.55 to binary format.
10101100.00010000.00010100.00110111
Network
198.211.57.209
132.210.184.166

36. Which layer manages device addressing - tracks the location of devices on the network - and determines the best way to move data?
Router
Network
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
The Transport layer user virtual circuits to create a reliable connection between two hosts.

37. When data is encapsulated - which is the correct order?
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 - segment - packet - frame - bit
Data Link (LLC sublayer)
The Session layer creates sessions between different hosts' applications.

38. Convert 10000100.11010010.01000011.10110011 to hexadecimal format.
Router
Hub
84:D2:43:B3
3 - 2 - 1 - none

39. 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?
Transport
The Network layer provides routing through an internetwork and logical addressing.
Decrease the window size.
Bridge or switch

40. This layer supports flow control and sequencing.
D8:1B:3D:76
Switch to switch - host to host - switch to host
Decrease the window size.
Transport

41. 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?
The Presentation layer makes sure that data is in a readable format for the Application layer.
The Transport layer user virtual circuits to create a reliable connection between two hosts.
The Session layer sets up - maintains - and terminates sessions between applications.
The Network layer creates packets out of segments handed down from the Transport layer.

42. Which layer is represented by packets?
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
The Network layer creates packets out of segments handed down from the Transport layer.
Segments - packets - frames - bits
Network

43. What type of RJ45 UTP cable do you use to connect a PC's COM port to a router or switch console port?
The Physical layer is responsible for the electrical and mechanical connections between devices.
Data - segment - packet - frame - bit
204.51.170.85
RJ45 UTP rolled cable.

44. This layer creates a virtual circuit before transmitting between two end stations.
Transport
Hub
The Network layer provides routing through an internetwork and logical addressing.
The Network layer creates packets out of segments handed down from the Transport layer.

45. What is the bit length and expression form of a MAC address?
84:D2:43:B3
The Physical layer is responsible for the electrical and mechanical connections between devices.
48 bits (6 bytes)
The Network layer provides routing through an internetwork and logical addressing.

46. Which layer segments and reassembles data into a data stream?
Router
The Network layer provides routing through an internetwork and logical addressing.
Router
Transport

47. This device can measure the distance to a remote network.
132.210.184.166
Router
The Presentation layer makes sure that data is in a readable format for the Application layer.
Data - segment - packet - frame - bit

48. Segmentation of a data stream happens at which layer of the OSI model?
Router
The Data Link layer is responsible for the framing of data packets.
Transport
The Network layer provides routing through an internetwork and logical addressing.

49. What are two purposes for segmentation with a bridge?
The Session layer creates sessions between different hosts' applications.
Segments - packets - frames - bits
00001010.00001011.00001100.01100011
To create more collision domains and to add more bandwidth for users.

50. Which of the following are 3 common types of flow control?
Network
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
The Session layer creates sessions between different hosts' applications.
Buffering - windowing - congestion avoidance