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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.
The Network layer provides routing through an internetwork and logical addressing.
The Session layer creates sessions between different hosts' applications.
198.211.57.209

2. Acknowledgments - sequencing - and flow control are characteristics of which OSI layer?
Data Link
Layer 4
10101100.00010000.00010100.00110111
The Data Link layer is responsible for the framing of data packets.

3. This device can never run full duplex.
Hub
CA:F5:83:EB
Router
Buffering - windowing - congestion avoidance

4. Convert 11001100.00110011.10101010.01010101 to decimal IP format.
Data Link & Physical
204.51.170.85
The Transport layer segments user data.
Network

5. Convert 11001010.11110101.10000011.11101011 to hexadecimal format.
Switch to switch - host to host - switch to host
D8:1B:3D:76
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
CA:F5:83:EB

6. Which layer provides logical addressing that routers will use for path determination?
The Network layer provides logical addressing - typically IP addressing and routing.
Fiber-opticcable
The Data Link layer is responsible for the framing of data packets.
204.51.170.85

7. Which layer is represented by bits?
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Transport
Transport
To create more collision domains and to add more bandwidth for users.

8. Which layer 1 devices can be used to enlarge the area covered by a single LAN segment?
198.211.57.209
Data Link
Source and destination MAC address and FCS field
Hub and repeater

9. Which layer segments and reassembles data into a data stream?
Transport
183/B7
Router
Network

10. Which layer is represented by frames?
Switch or bridge
Decrease the window size.
Segments - packets - frames - bits
The Data Link layer frames packets received from the Network layer.

11. How does a host on an Ethernet LAN know when to transmit after a collision has occurred? (Name two)
To provide a means for the receiver to govern the amount of data sent by the sender.
The Session layer sets up - maintains - and terminates sessions between applications.
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

12. This layer creates a virtual circuit before transmitting between two end stations.
Network
Transport
Decrease the window size.
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).

13. What are two purposes for segmentation with a bridge?
The Transport layer segments user data.
Hub and repeater
00001010.00001011.00001100.01100011
To create more collision domains and to add more bandwidth for users.

14. You have the following binary number: 10110111 - What are the decimal and hexadecimal equivalents?
Bridge or switch
Segments - packets - frames - bits
Decrease the window size.
183/B7

15. What is the bit length and expression form of a MAC address?
To provide a means for the receiver to govern the amount of data sent by the sender.
Router
48 bits (6 bytes)
84:D2:43:B3

16. 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.
To create more collision domains and to add more bandwidth for users.
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
Hub and repeater

17. Why does the data communication industry use the layered OSI reference model? (Name two)
The Network layer creates packets out of segments handed down from the Transport 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.
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.

18. 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?
Network
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
Hub
10101100.00010000.00010100.00110111

19. Which layer combines bits into bytes and bytes into frames - uses MAC addressing - and provides error detection?
Layer 4
The Data Link layer is responsible for the framing of data packets.
The Network layer provides logical addressing - typically IP addressing and routing.
Bridge or switch

20. Put the following in order of encapsulation: Packets - Frames - Bits - Segments
Segments - packets - frames - bits
The Network layer provides routing through an internetwork and logical addressing.
RJ45 UTP rolled cable.
Data Link (LLC sublayer)

21. When data is encapsulated - which is the correct order?
Segments - packets - frames - bits
Network
Fiber-opticcable
Data - segment - packet - frame - bit

22. What type of RJ45 UTP cable do you use to connect a PC's COM port to a router or switch console port?
Decrease the window size.
Router
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
RJ45 UTP rolled cable.

23. Name four router functions.
The Network layer provides logical addressing - typically IP addressing and routing.
CA:F5:83:EB
48 bits (6 bytes)
Packet switching - Packet filtering - Internetwork communication - Path selection

24. 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 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.
RJ45 UTP crossover cable.
Network

25. Which layer is represented by segments?
The Transport layer segments user data.
CA:F5:83:EB
84:D2:43:B3
Decrease the window size.

26. 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.
Bridge or switch
Data Link
3 - 2 - 1 - none

27. Convert 10000100.11010010.10111000.10100110 to decimal IP format.
The Session layer creates sessions between different hosts' applications.
The Transport layer segments user data.
132.210.184.166
Transport

28. Which layer is represented by packets?
To create more collision domains and to add more bandwidth for users.
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
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.

29. This device can measure the distance to a remote network.
Router
D8:1B:3D:76
Transport
198.211.57.209

30. Routers operate at layer __. LAN switches operate at layer __. Ethernet hubs operate at layer __. Word processing operates at layer __.
3 - 2 - 1 - none
Router
The Data Link layer is responsible for the framing of data packets.
Router

31. 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.
The Data Link layer is responsible for the framing of data packets.
Source and destination MAC address and FCS field
The Presentation layer makes sure that data is in a readable format for the Application layer.

32. This device uses hardware addresses to filter a network.
Segments - packets - frames - bits
Bridge or switch
198.211.57.209
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.

33. You want to implement a network medium that is not susceptible to EMI. Which type of cabling should you use?
Bridge or switch
The Session layer creates sessions between different hosts' applications.
Fiber-opticcable
00001010.00001011.00001100.01100011

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
Bridge or switch
The Transport layer user virtual circuits to create a reliable connection between two hosts.
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).

35. 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?
Decrease the window size.
Fiber-opticcable
198.211.57.209
Bridge or switch

36. Convert 10.11.12.99 to binary format.
00001010.00001011.00001100.01100011
Data Link (LLC sublayer)
The Data Link layer frames packets received from the Network layer.
Router

37. This layer uses service access points.
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
Buffering - windowing - congestion avoidance
Transport
Data Link (LLC sublayer)

38. This device breaks up collision domains and broadcast domains.
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
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
Router
Transport

39. Which layer is responsible for creating - managing - and terminating sessions between applications?
D8:1B:3D:76
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 Session layer sets up - maintains - and terminates sessions between applications.
Transport

40. What is the purpose of flow control?
To provide a means for the receiver to govern the amount of data sent by the sender.
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 Data Link layer frames packets received from the Network layer.
Hub

41. Which layer manages device addressing - tracks the location of devices on the network - and determines the best way to move data?
RJ45 UTP crossover cable.
The Session layer sets up - maintains - and terminates sessions between applications.
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).

42. This device sends and receives information about the Network layer.
Data Link & Physical
The Transport layer segments user data.
Switch to switch - host to host - switch to host
Router

43. Segmentation of a data stream happens at which layer of the OSI model?
Transport
Hub and repeater
The Transport layer segments user data.
Bridge or switch

44. Convert 11000110.11010011.00111001.11010001 to decimal IP format.
198.211.57.209
The Presentation layer makes sure that data is in a readable format for the Application layer.
The Network layer creates packets out of segments handed down from the Transport layer.
Data Link & Physical

45. Convert 192.168.10.15 to binary format.
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
CA:F5:83:EB
11000000.10101000.00001010.00001111
10101100.00010000.00010100.00110111

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

47. Which of the following are 3 common types of flow control?
84:D2:43:B3
Transport
Buffering - windowing - congestion avoidance
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. Name three types of connections that can use full duplex.
183/B7
The Transport layer user virtual circuits to create a reliable connection between two hosts.
Switch to switch - host to host - switch to host
Decrease the window size.

49. What type of RJ45 UTP cable is used between switches?
RJ45 UTP crossover cable.
To provide a means for the receiver to govern the amount of data sent by the sender.
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

50. This layer supports flow control and sequencing.
The Session layer sets up - maintains - and terminates sessions between applications.
Data - segment - packet - frame - bit
10101100.00010000.00010100.00110111
Transport