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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 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 Transport layer user virtual circuits to create a reliable connection between two hosts.
Hub
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 frames packets received from the Network layer.

2. Which layer specifies voltage - wire speed - and pinout cables and moves bits between devices?
Packet switching - Packet filtering - Internetwork communication - Path selection
Data Link & Physical
The Physical layer is responsible for the electrical and mechanical connections between devices.
132.210.184.166

3. This device creates many smaller collision domains - but the network is still one large broadcast domain.
Switch or bridge
To create more collision domains and to add more bandwidth for users.
11000000.10101000.00001010.00001111
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

4. Convert 172.16.20.55 to binary format.
48 bits (6 bytes)
Transport
Segments - packets - frames - bits
10101100.00010000.00010100.00110111

5. Convert 10000100.11010010.10111000.10100110 to decimal IP format.
Layer 4
132.210.184.166
To provide a means for the receiver to govern the amount of data sent by the sender.
D8:1B:3D:76

6. Which layer is represented by segments?
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 Physical layer is responsible for the electrical and mechanical connections between devices.
The Transport layer segments user data.
The Session layer sets up - maintains - and terminates sessions between applications.

7. Which layer is represented by frames?
The Data Link layer frames packets received from the Network layer.
00001010.00001011.00001100.01100011
Data Link
132.210.184.166

8. This layer creates a virtual circuit before transmitting between two end stations.
10101100.00010000.00010100.00110111
198.211.57.209
Transport
Switch to switch - host to host - switch to host

9. 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.
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 sets up - maintains - and terminates sessions between applications.
RJ45 UTP crossover cable.

10. Convert 11001010.11110101.10000011.11101011 to hexadecimal format.
183/B7
The Transport layer user virtual circuits to create a reliable connection between two hosts.
CA:F5:83:EB
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).

11. This device breaks up collision domains and broadcast domains.
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.
Layer 4
Switch to switch - host to host - switch to host

12. Put the following in order of encapsulation: Packets - Frames - Bits - Segments
204.51.170.85
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).
Packet switching - Packet filtering - Internetwork communication - Path selection
Segments - packets - frames - bits

13. Convert 11001100.00110011.10101010.01010101 to decimal IP format.
183/B7
204.51.170.85
The Transport layer user virtual circuits to create a reliable connection between two hosts.
48 bits (6 bytes)

14. Which layer is represented by packets?
The Network layer creates packets out of segments handed down from the Transport layer.
To provide a means for the receiver to govern the amount of data sent by the sender.
84:D2:43:B3
Data Link (LLC sublayer)

15. Which layer is responsible for converting data packets from the Data Link layer into electrical signals?
Switch to switch - host to host - switch to host
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 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.

16. Which layer segments and reassembles data into a data stream?
3 - 2 - 1 - none
The Session layer sets up - maintains - and terminates sessions between applications.
RJ45 UTP crossover cable.
Transport

17. What type of RJ45 UTP cable do you use to connect a PC's COM port to a router or switch console port?
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.
198.211.57.209
RJ45 UTP rolled cable.
Data Link (LLC sublayer)

18. At which layer is routing implemented - enabling connections and path selection between two end systems?
3 - 2 - 1 - none
The Network layer provides routing through an internetwork and logical addressing.
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.

19. Logical addressing is used at this layer.
Transport
Network
The Presentation layer makes sure that data is in a readable format for the Application 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.

20. Convert 10000100.11010010.01000011.10110011 to hexadecimal format.
D8:1B:3D:76
84:D2:43:B3
Transport
Buffering - windowing - congestion avoidance

21. What are two unique characteristics of half-duplex Ethernet when compared to full-duplex Ethernet?
84:D2:43:B3
Layer 4
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
The Physical layer is responsible for transporting 1s and 0s in a digital signal.

22. Ethernet is defined at these layers.
The Data Link layer frames packets received from the Network layer.
Data Link & Physical
Hub
Data Link (LLC sublayer)

23. Segmentation of a data stream happens at which layer of the OSI model?
RJ45 UTP rolled cable.
The Network layer creates packets out of segments handed down from the Transport layer.
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.

24. This device uses hardware addresses to filter a network.
The Transport layer segments user data.
Bridge or switch
CA:F5:83:EB
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.

25. You want to implement a network medium that is not susceptible to EMI. Which type of cabling should you use?
The Network layer provides logical addressing - typically IP addressing and routing.
Fiber-opticcable
Transport
Switch to switch - host to host - switch to host

26. Convert 192.168.10.15 to binary format.
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
11000000.10101000.00001010.00001111
Router
3 - 2 - 1 - none

27. Convert 11000110.11010011.00111001.11010001 to decimal IP format.
Router
198.211.57.209
11000000.10101000.00001010.00001111
To create more collision domains and to add more bandwidth for users.

28. Which of the following are 3 common types of flow control?
Buffering - windowing - congestion avoidance
11000000.10101000.00001010.00001111
CA:F5:83:EB
204.51.170.85

29. Which layer provides the physical transmission of the data and handles error notification - network topology - and flow control?
Data Link
RJ45 UTP rolled cable.
Decrease the window size.
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.

30. Why does the data communication industry use the layered OSI reference model? (Name two)
204.51.170.85
Bridge or switch
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.

31. Which layer manages device addressing - tracks the location of devices on the network - and determines the best way to move data?
Data Link (LLC sublayer)
11000000.10101000.00001010.00001111
Router
Network

32. 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?
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.
Switch to switch - host to host - switch to host
Network

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

34. This device can never run full duplex.
Router
00001010.00001011.00001100.01100011
Hub and repeater
Hub

35. Convert 11011000.00011011.00111101.01110110 to hexadecimal format.
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.
D8:1B:3D:76
Layer 4
The Network layer creates packets out of segments handed down from the Transport layer.

36. Convert 10.11.12.99 to binary format.
Segments - packets - frames - bits
D8:1B:3D:76
00001010.00001011.00001100.01100011
Router

37. This layer supports flow control and sequencing.
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
The Physical layer is responsible for the electrical and mechanical connections between devices.
Transport

38. Which layer is represented by bits?
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Switch to switch - host to host - switch to host
Hub
RJ45 UTP rolled cable.

39. What is the purpose of flow control?
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
D8:1B:3D:76
The Transport layer segments user data.
To provide a means for the receiver to govern the amount of data sent by the sender.

40. Acknowledgments - sequencing - and flow control are characteristics of which OSI layer?
Layer 4
Transport
The Network layer creates packets out of segments handed down from the Transport layer.
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.

41. Which layer defines how data is formatted - presented - encoded - and converted for use on the network?
The Presentation layer makes sure that data is in a readable format for the Application 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
11000000.10101000.00001010.00001111
Switch to switch - host to host - switch to host

42. You have the following binary number: 10110111 - What are the decimal and hexadecimal equivalents?
183/B7
The Physical layer is responsible for the electrical and mechanical connections between devices.
To provide a means for the receiver to govern the amount of data sent by the sender.
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.

43. What are two purposes for segmentation with a bridge?
The Transport layer user virtual circuits to create a reliable connection between two hosts.
To create more collision domains and to add more bandwidth for users.
The Session layer creates sessions between different hosts' applications.
Hub and repeater

44. Which layer is responsible for creating - managing - and terminating sessions between applications?
The Network layer provides logical addressing - typically IP addressing and routing.
Router
Router
The Session layer sets up - maintains - and terminates sessions between applications.

45. Which layer combines bits into bytes and bytes into frames - uses MAC addressing - and provides error detection?
The Data Link layer is responsible for the framing of data packets.
The Presentation layer makes sure that data is in a readable format for the Application layer.
3 - 2 - 1 - none
Bridge or switch

46. This layer uses service access points.
Data Link (LLC sublayer)
Network
Source and destination MAC address and FCS field
84:D2:43:B3

47. Name three types of connections that can use full duplex.
183/B7
Bridge or switch
Switch to switch - host to host - switch to host
198.211.57.209

48. Which two fields are contained within an IEEE Ethernet frame header?
Source and destination MAC address and FCS field
Bridge or switch
CA:F5:83:EB
The Physical layer is responsible for the electrical and mechanical connections between devices.

49. Name four router functions.
The Network layer creates packets out of segments handed down from the Transport layer.
RJ45 UTP crossover cable.
Packet switching - Packet filtering - Internetwork communication - Path selection
To provide a means for the receiver to govern the amount of data sent by the sender.

50. When data is encapsulated - which is the correct order?
RJ45 UTP rolled cable.
The Network layer creates packets out of segments handed down from the Transport layer.
Data - segment - packet - frame - bit
3 - 2 - 1 - none