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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. This layer supports flow control and sequencing.
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Transport
Switch or bridge
Hub

2. 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).
Source and destination MAC address and FCS field
132.210.184.166
Transport

3. Which layer manages device addressing - tracks the location of devices on the network - and determines the best way to move data?
Transport
Network
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
Hub and repeater

4. How does a host on an Ethernet LAN know when to transmit after a collision has occurred? (Name two)
00001010.00001011.00001100.01100011
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.
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
Data - segment - packet - frame - bit

5. Which layer defines how data is formatted - presented - encoded - and converted for use on the network?
11000000.10101000.00001010.00001111
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 Network layer provides logical addressing - typically IP addressing and routing.

6. Which two fields are contained within an IEEE Ethernet frame header?
Router
204.51.170.85
The Presentation layer makes sure that data is in a readable format for the Application layer.
Source and destination MAC address and FCS field

7. Ethernet is defined at these layers.
Data Link & Physical
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
The Physical layer is responsible for transporting 1s and 0s in a digital signal.

8. Routers operate at layer __. LAN switches operate at layer __. Ethernet hubs operate at layer __. Word processing operates at layer __.
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.
To provide a means for the receiver to govern the amount of data sent by the sender.
The Physical layer is responsible for the electrical and mechanical connections between devices.
3 - 2 - 1 - none

9. This device uses hardware addresses to filter a network.
The Session layer creates sessions between different hosts' applications.
Bridge or switch
The Network layer creates packets out of segments handed down from the Transport layer.
The Transport layer user virtual circuits to create a reliable connection between two hosts.

10. You want to implement a network medium that is not susceptible to EMI. Which type of cabling should you use?
Network
10101100.00010000.00010100.00110111
Transport
Fiber-opticcable

11. Convert 10.11.12.99 to binary format.
00001010.00001011.00001100.01100011
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.
Hub

12. Which layer is responsible for creating - managing - and terminating sessions between applications?
Router
Network
The Network layer creates packets out of segments handed down from the Transport layer.
The Session layer sets up - maintains - and terminates sessions between applications.

13. 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?
Hub
Decrease the window size.
To create more collision domains and to add more bandwidth for users.
Source and destination MAC address and FCS field

14. Convert 11001010.11110101.10000011.11101011 to hexadecimal format.
CA:F5:83:EB
To provide a means for the receiver to govern the amount of data sent by the sender.
The Network layer provides routing through an internetwork and logical addressing.
204.51.170.85

15. Which layer is responsible for converting data packets from the Data Link layer into electrical signals?
To create more collision domains and to add more bandwidth for users.
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.
Data - segment - packet - frame - bit

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

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17. 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.
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 Data Link layer is responsible for the framing of data packets.
The Network layer provides routing through an internetwork and logical addressing.

18. This device creates many smaller collision domains - but the network is still one large broadcast domain.
Hub
Switch or bridge
Transport
Data Link & Physical

19. Which of the following are 3 common types of flow control?
Buffering - windowing - congestion avoidance
The Session layer sets up - maintains - and terminates sessions between applications.
RJ45 UTP crossover cable.
Hub

20. This device breaks up collision domains and broadcast domains.
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
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
Decrease the window size.

21. Why does the data communication industry use the layered OSI reference model? (Name two)
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.
Switch or bridge
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.

22. Segmentation of a data stream happens at which layer of the OSI model?
Segments - packets - frames - bits
Transport
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
Bridge or switch

23. Which layer combines bits into bytes and bytes into frames - uses MAC addressing - and provides error detection?
Network
The Session layer sets up - maintains - and terminates sessions between applications.
183/B7
The Data Link layer is responsible for the framing of data packets.

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

25. Convert 11001100.00110011.10101010.01010101 to decimal IP 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
204.51.170.85
Router
Transport

26. Convert 11011000.00011011.00111101.01110110 to hexadecimal format.
84:D2:43:B3
The Transport layer user virtual circuits to create a reliable connection between two hosts.
D8:1B:3D:76
Transport

27. 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?
The Data Link layer is responsible for the framing of data packets.
48 bits (6 bytes)
CA:F5:83:EB
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.

28. Logical addressing is used at this layer.
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 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.
Network
Segments - packets - frames - bits

29. Acknowledgments - sequencing - and flow control are characteristics of which OSI layer?
To provide a means for the receiver to govern the amount of data sent by the sender.
204.51.170.85
Buffering - windowing - congestion avoidance
Layer 4

30. Convert 192.168.10.15 to binary format.
11000000.10101000.00001010.00001111
84:D2:43:B3
Decrease the window size.
Source and destination MAC address and FCS field

31. Convert 10000100.11010010.01000011.10110011 to hexadecimal format.
Router
84:D2:43:B3
132.210.184.166
Segments - packets - frames - bits

32. This device creates one big collision domain and one large broadcast domain.
The Session layer creates sessions between different hosts' applications.
Hub and repeater
The Network layer provides logical addressing - typically IP addressing and routing.
Hub

33. Convert 11000110.11010011.00111001.11010001 to decimal IP format.
132.210.184.166
198.211.57.209
48 bits (6 bytes)
The Transport layer user virtual circuits to create a reliable connection between two hosts.

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

35. This device can never run full duplex.
The Presentation layer makes sure that data is in a readable format for the Application layer.
Fiber-opticcable
Hub and repeater
Hub

36. Convert 10000100.11010010.10111000.10100110 to decimal IP format.
The Physical layer is responsible for the electrical and mechanical connections between devices.
Bridge or switch
Transport
132.210.184.166

37. This device sends and receives information about the Network layer.
The Network layer provides logical addressing - typically IP addressing and routing.
Source and destination MAC address and FCS field
Router
Transport

38. What are two unique characteristics of half-duplex Ethernet when compared to full-duplex Ethernet?
Network
198.211.57.209
00001010.00001011.00001100.01100011
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.

39. What type of RJ45 UTP cable is used between switches?
Data Link (LLC sublayer)
Network
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.
RJ45 UTP crossover cable.

40. What are two purposes for segmentation with a bridge?
48 bits (6 bytes)
Segments - packets - frames - bits
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).
To create more collision domains and to add more bandwidth for users.

41. Name three types of connections that can use full duplex.
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.
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
Switch to switch - host to host - switch to host
Transport

42. At which layer is routing implemented - enabling connections and path selection between two end systems?
Segments - packets - frames - bits
Switch to switch - host to host - switch to host
The Network layer provides routing through an internetwork and logical addressing.
Packet switching - Packet filtering - Internetwork communication - Path selection

43. Convert 172.16.20.55 to binary format.
Transport
RJ45 UTP rolled cable.
Buffering - windowing - congestion avoidance
10101100.00010000.00010100.00110111

44. What is the bit length and expression form of a MAC address?
48 bits (6 bytes)
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 Network layer provides logical addressing - typically IP addressing and routing.
Packet switching - Packet filtering - Internetwork communication - Path selection

45. What is the purpose of flow control?
Router
00001010.00001011.00001100.01100011
To provide a means for the receiver to govern the amount of data sent by the sender.
Switch or bridge

46. Which layer specifies voltage - wire speed - and pinout cables and moves bits between devices?
3 - 2 - 1 - none
Switch to switch - host to host - switch to host
The Physical layer is responsible for the electrical and mechanical connections between devices.
Transport

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

48. This layer uses service access points.
84:D2:43:B3
Data Link (LLC sublayer)
Switch to switch - host to host - switch to host
183/B7

49. Name four router functions.
Packet switching - Packet filtering - Internetwork communication - Path selection
D8:1B:3D:76
Fiber-opticcable
00001010.00001011.00001100.01100011

50. Which layer is represented by segments?
The Session layer sets up - maintains - and terminates sessions between applications.
The Transport layer segments user data.
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