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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?
Segments - packets - frames - bits
3 - 2 - 1 - none
The Transport layer user virtual circuits to create a reliable connection between two hosts.
The Session layer creates sessions between different hosts' applications.

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
198.211.57.209
11000000.10101000.00001010.00001111
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).
48 bits (6 bytes)

3. Which layer specifies voltage - wire speed - and pinout cables and moves bits between devices?
The Network layer provides logical addressing - typically IP addressing and routing.
Data Link
The Physical layer is responsible for the electrical and mechanical connections between devices.
To create more collision domains and to add more bandwidth for users.

4. You want to implement a network medium that is not susceptible to EMI. Which type of cabling should you use?
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
Fiber-opticcable
Transport
The Physical layer is responsible for transporting 1s and 0s in a digital signal.

5. 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.
Hub
The Session layer creates sessions between different hosts' applications.
Transport

6. 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.
Source and destination MAC address and FCS field
Router
The Session layer creates sessions between different hosts' applications.

7. Convert 172.16.20.55 to binary format.
The Data Link layer frames packets received from the Network layer.
10101100.00010000.00010100.00110111
Transport
84:D2:43:B3

8. Convert 10000100.11010010.10111000.10100110 to decimal IP format.
The Network layer provides logical addressing - typically IP addressing and routing.
Transport
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
132.210.184.166

9. Why does the data communication industry use the layered OSI reference model? (Name two)
198.211.57.209
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 rolled cable.
11000000.10101000.00001010.00001111

10. This layer creates a virtual circuit before transmitting between two end stations.
00001010.00001011.00001100.01100011
Transport
The Session layer sets up - maintains - and terminates sessions between applications.
The Data Link layer frames packets received from the Network layer.

11. Which layer is represented by bits?
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Data - segment - packet - frame - bit
RJ45 UTP crossover cable.
The Session layer creates sessions between different hosts' applications.

12. Name four router functions.
Packet switching - Packet filtering - Internetwork communication - Path selection
Router
To provide a means for the receiver to govern the amount of data sent by the sender.
Data - segment - packet - frame - bit

13. Convert 11001010.11110101.10000011.11101011 to hexadecimal format.
Hub
183/B7
Data - segment - packet - frame - bit
CA:F5:83:EB

14. Put the following in order of encapsulation: Packets - Frames - Bits - Segments
CA:F5:83:EB
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Segments - packets - frames - bits
The Session layer sets up - maintains - and terminates sessions between applications.

15. Which layer is represented by packets?
The Network layer creates packets out of segments handed down from the Transport layer.
Decrease the window size.
To create more collision domains and to add more bandwidth for users.
198.211.57.209

16. Which layer provides the physical transmission of the data and handles error notification - network topology - and flow control?
The Network layer provides logical addressing - typically IP addressing and routing.
Hub
Data Link
Decrease the window size.

17. This device can never run full duplex.
The Transport layer user virtual circuits to create a reliable connection between two hosts.
Hub
Router
48 bits (6 bytes)

18. 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?
To create more collision domains and to add more bandwidth for users.
Decrease the window size.
The Network layer creates packets out of segments handed down from the Transport layer.
3 - 2 - 1 - none

19. Which two fields are contained within an IEEE Ethernet frame header?
The Presentation layer makes sure that data is in a readable format for the Application layer.
Source and destination MAC address and FCS field
The Network layer provides logical addressing - typically IP addressing and routing.
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).

20. Convert 11001100.00110011.10101010.01010101 to decimal IP format.
204.51.170.85
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.
00001010.00001011.00001100.01100011
Hub and repeater

21. Logical addressing is used at this layer.
Network
Router
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.

22. This layer supports flow control and sequencing.
The Network layer creates packets out of segments handed down from the Transport layer.
D8:1B:3D:76
The Session layer sets up - maintains - and terminates sessions between applications.
Transport

23. Convert 10.11.12.99 to binary format.
Layer 4
198.211.57.209
00001010.00001011.00001100.01100011
Transport

24. Convert 10000100.11010010.01000011.10110011 to hexadecimal format.
Network
84:D2:43:B3
Packet switching - Packet filtering - Internetwork communication - Path selection
D8:1B:3D:76

25. Convert 11000110.11010011.00111001.11010001 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
3 - 2 - 1 - none
198.211.57.209
Hub

26. 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?
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
The Session layer sets up - maintains - and terminates sessions between applications.
The Network layer provides routing through an internetwork and logical addressing.

27. When data is encapsulated - which is the correct order?
Data - segment - packet - frame - bit
Network
Packet switching - Packet filtering - Internetwork communication - Path selection
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.

28. What are two purposes for segmentation with a bridge?
3 - 2 - 1 - none
To create more collision domains and to add more bandwidth for users.
The Transport layer user virtual circuits to create a reliable connection between two hosts.
Transport

29. Convert 11011000.00011011.00111101.01110110 to hexadecimal format.
RJ45 UTP crossover cable.
The Network layer creates packets out of segments handed down from the Transport layer.
D8:1B:3D:76
Transport

30. 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)
Network
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
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.

31. Ethernet is defined at these layers.
132.210.184.166
10101100.00010000.00010100.00110111
Data Link & Physical
Packet switching - Packet filtering - Internetwork communication - Path selection

32. Which layer 1 devices can be used to enlarge the area covered by a single LAN segment?
3 - 2 - 1 - none
Hub and repeater
204.51.170.85
Transport

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

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34. Which layer segments and reassembles data into a data stream?
Transport
The Network layer provides routing through an internetwork and logical addressing.
The Data Link layer frames packets received from the Network layer.
Data Link (LLC sublayer)

35. Which layer is responsible for converting data packets from the Data Link layer into electrical signals?
Packet switching - Packet filtering - Internetwork communication - Path selection
RJ45 UTP crossover 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 Transport layer user virtual circuits to create a reliable connection between two hosts.

36. Name three types of connections that can use full duplex.
Switch to switch - host to host - switch to host
D8:1B:3D:76
3 - 2 - 1 - none
The Physical layer is responsible for the electrical and mechanical connections between devices.

37. 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
00001010.00001011.00001100.01100011
Data Link
The Presentation layer makes sure that data is in a readable format for the Application layer.

38. Which layer is represented by segments?
Network
The Transport layer segments user data.
10101100.00010000.00010100.00110111
The Network layer provides routing through an internetwork and logical addressing.

39. What type of RJ45 UTP cable is used between switches?
Hub and repeater
The Transport layer segments user data.
RJ45 UTP crossover cable.
132.210.184.166

40. 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.
132.210.184.166
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
Router

41. Which layer is represented by frames?
The Data Link layer frames packets received from the Network 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).
CA:F5:83:EB
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

42. You have the following binary number: 10110111 - What are the decimal and hexadecimal equivalents?
Router
183/B7
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.
204.51.170.85

43. Which layer is responsible for creating - managing - and terminating sessions between applications?
The Session layer sets up - maintains - and terminates sessions between applications.
CA:F5:83:EB
The Transport layer segments user data.
The Physical layer is responsible for transporting 1s and 0s in a digital signal.

44. Which of the following are 3 common types of flow control?
Source and destination MAC address and FCS field
Buffering - windowing - congestion avoidance
Network
The Network layer provides logical addressing - typically IP addressing and routing.

45. Which layer combines bits into bytes and bytes into frames - uses MAC addressing - and provides error detection?
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.
To provide a means for the receiver to govern the amount of data sent by the sender.
The Network layer provides logical addressing - typically IP addressing and routing.

46. Convert 192.168.10.15 to binary format.
The Session layer creates sessions between different hosts' applications.
Layer 4
11000000.10101000.00001010.00001111
Router

47. Which layer provides logical addressing that routers will use for path determination?
Transport
Source and destination MAC address and FCS field
The Network layer provides logical addressing - typically IP addressing and routing.
CA:F5:83:EB

48. This device creates many smaller collision domains - but the network is still one large broadcast domain.
Router
10101100.00010000.00010100.00110111
Switch or bridge
The Physical layer is responsible for transporting 1s and 0s in a digital signal.

49. This device uses hardware addresses to filter a 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.
Decrease the window size.
Bridge or switch
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

50. This device can measure the distance to a remote network.
Buffering - windowing - congestion avoidance
Router
183/B7
84:D2:43:B3