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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 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?
183/B7
11000000.10101000.00001010.00001111
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.

2. Convert 10.11.12.99 to binary format.
The Network layer provides routing through an internetwork and logical addressing.
84:D2:43:B3
Router
00001010.00001011.00001100.01100011

3. This layer creates a virtual circuit before transmitting between two end stations.
Data Link
Transport
RJ45 UTP crossover cable.
The Network layer provides logical addressing - typically IP addressing and routing.

4. Which layer specifies voltage - wire speed - and pinout cables and moves bits between devices?
The Session layer creates sessions between different hosts' applications.
The Physical layer is responsible for the electrical and mechanical connections between devices.
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
Hub and repeater

5. Convert 192.168.10.15 to binary format.
Network
Layer 4
The Transport layer user virtual circuits to create a reliable connection between two hosts.
11000000.10101000.00001010.00001111

6. Which layer 1 devices can be used to enlarge the area covered by a single LAN segment?
Transport
Router
204.51.170.85
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?
The Presentation layer makes sure that data is in a readable format for the Application layer.
Transport
Router
Decrease the window size.

8. Which layer is responsible for creating - managing - and terminating sessions between applications?
The Session layer sets up - maintains - and terminates sessions between applications.
48 bits (6 bytes)
RJ45 UTP crossover cable.
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).

9. How does a host on an Ethernet LAN know when to transmit after a collision has occurred? (Name two)
Layer 4
Switch or bridge
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
Transport

10. Convert 11001100.00110011.10101010.01010101 to decimal IP format.
Buffering - windowing - congestion avoidance
204.51.170.85
The Transport layer segments user data.
Hub

11. Why does the data communication industry use the layered OSI reference model? (Name two)
Data Link (LLC sublayer)
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.
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
Hub

12. When data is encapsulated - which is the correct order?
Network
Data - segment - packet - frame - bit
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
3 - 2 - 1 - none

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

14. You want to implement a network medium that is not susceptible to EMI. Which type of cabling should you use?
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 Session layer creates sessions between different hosts' applications.
Fiber-opticcable
Packet switching - Packet filtering - Internetwork communication - Path selection

15. Convert 11001010.11110101.10000011.11101011 to hexadecimal format.
132.210.184.166
Router
Segments - packets - frames - bits
CA:F5:83:EB

16. 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
Switch to switch - host to host - switch to host
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.
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).

17. Routers operate at layer __. LAN switches operate at layer __. Ethernet hubs operate at layer __. Word processing operates at layer __.
The Transport layer segments user data.
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).
3 - 2 - 1 - none

18. What are two unique characteristics of half-duplex Ethernet when compared to full-duplex Ethernet?
The Network layer provides routing through an internetwork and logical addressing.
00001010.00001011.00001100.01100011
Data Link & Physical
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.

19. This device can never run full duplex.
204.51.170.85
Hub
Decrease the window size.
Layer 4

20. This layer uses service access points.
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)
Data Link & Physical
Segments - packets - frames - bits

21. What type of RJ45 UTP cable is used between switches?
RJ45 UTP crossover cable.
Router
Switch to switch - host to host - switch to host
Source and destination MAC address and FCS field

22. Put the following in order of encapsulation: Packets - Frames - Bits - Segments
Segments - packets - frames - bits
The Network layer provides logical addressing - typically IP addressing and routing.
Buffering - windowing - congestion avoidance
The Data Link layer frames packets received from the Network layer.

23. This device sends and receives information about the Network layer.
204.51.170.85
Router
Bridge or switch
Source and destination MAC address and FCS field

24. Name three types of connections that can use full duplex.
48 bits (6 bytes)
Transport
Fiber-opticcable
Switch to switch - host to host - switch to host

25. This device uses hardware addresses to filter a network.
Data Link
Router
Bridge or switch
The Network layer creates packets out of segments handed down from the Transport layer.

26. What are two purposes for segmentation with a bridge?
The Session layer sets up - maintains - and terminates sessions between applications.
To create more collision domains and to add more bandwidth for users.
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Data - segment - packet - frame - bit

27. Which layer is represented by segments?
Transport
Segments - packets - frames - bits
Fiber-opticcable
The Transport layer segments user data.

28. Which of the following are 3 common types of flow control?
Buffering - windowing - congestion avoidance
Bridge or switch
Data Link
RJ45 UTP rolled cable.

29. Segmentation of a data stream happens at which layer of the OSI model?
183/B7
Transport
Hub
Data - segment - packet - frame - bit

30. Convert 10000100.11010010.10111000.10100110 to decimal IP format.
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
132.210.184.166
Router
The Physical layer is responsible for the electrical and mechanical connections between devices.

31. Which layer provides logical addressing that routers will use for path determination?
10101100.00010000.00010100.00110111
The Network layer provides logical addressing - typically IP addressing and routing.
The Transport layer segments user data.
The Transport layer user virtual circuits to create a reliable connection between two hosts.

32. What is the purpose of flow control?
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).
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
Fiber-opticcable
To provide a means for the receiver to govern the amount of data sent by the sender.

33. You have the following binary number: 10110111 - What are the decimal and hexadecimal equivalents?
Buffering - windowing - congestion avoidance
Transport
183/B7
Bridge or switch

34. 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.
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.
The Data Link layer frames packets received from the Network layer.

35. Which layer defines how data is formatted - presented - encoded - and converted for use on the network?
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Decrease the window size.
Hub
The Presentation layer makes sure that data is in a readable format for the Application layer.

36. This device breaks up collision domains and broadcast domains.
Router
Transport
Bridge or switch
RJ45 UTP rolled cable.

37. Which layer is responsible for converting data packets from the Data Link layer into electrical signals?
Transport
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.
3 - 2 - 1 - none
To create more collision domains and to add more bandwidth for users.

38. Logical addressing is used at this layer.
Data Link
Hub and repeater
Network
Packet switching - Packet filtering - Internetwork communication - Path selection

39. Convert 172.16.20.55 to binary format.
To provide a means for the receiver to govern the amount of data sent by the sender.
To create more collision domains and to add more bandwidth for users.
10101100.00010000.00010100.00110111
The Session layer sets up - maintains - and terminates sessions between applications.

40. Which two fields are contained within an IEEE Ethernet frame header?
183/B7
Source and destination MAC address and FCS field
D8:1B:3D:76
Decrease the window size.

41. Name four router functions.
183/B7
The Transport layer segments user data.
CA:F5:83:EB
Packet switching - Packet filtering - Internetwork communication - Path selection

42. Convert 11011000.00011011.00111101.01110110 to hexadecimal format.
00001010.00001011.00001100.01100011
D8:1B:3D:76
Router
Router

43. 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?
Bridge or switch
The Transport layer user virtual circuits to create a reliable connection between two hosts.
RJ45 UTP crossover cable.
RJ45 UTP rolled cable.

44. Ethernet is defined at these layers.
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
Data Link & Physical
The Network layer provides logical addressing - typically IP addressing and routing.
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.

45. What type of RJ45 UTP cable do you use to connect a PC's COM port to a router or switch console port?
Transport
CA:F5:83:EB
The Presentation layer makes sure that data is in a readable format for the Application layer.
RJ45 UTP rolled cable.

46. This device creates one big collision domain and one large broadcast domain.
The Session layer creates sessions between different hosts' applications.
Hub
Network
The Data Link layer frames packets received from the Network layer.

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

48. Convert 11000110.11010011.00111001.11010001 to decimal IP format.
198.211.57.209
CA:F5:83:EB
Fiber-opticcable
Data Link & Physical

49. This layer supports flow control and sequencing.
11000000.10101000.00001010.00001111
Packet switching - Packet filtering - Internetwork communication - Path selection
Transport
Fiber-opticcable

50. This device can measure the distance to a remote network.
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
The Session layer sets up - maintains - and terminates sessions between applications.
11000000.10101000.00001010.00001111