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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 creating - managing - and terminating sessions between applications?
183/B7
The Session layer sets up - maintains - and terminates sessions between applications.
To create more collision domains and to add more bandwidth for users.
The Data Link layer is responsible for the framing of data packets.

2. Name four router functions.
RJ45 UTP crossover cable.
Packet switching - Packet filtering - Internetwork communication - Path selection
Network
Bridge or switch

3. 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.
00001010.00001011.00001100.01100011
Switch to switch - host to host - switch to host
The Transport layer segments user data.

4. You want to implement a network medium that is not susceptible to EMI. Which type of cabling should you use?
Router
11000000.10101000.00001010.00001111
Fiber-opticcable
The Network layer provides routing through an internetwork and logical addressing.

5. This device breaks up collision domains and broadcast domains.
The Transport layer segments user data.
Data Link & Physical
48 bits (6 bytes)
Router

6. Put the following in order of encapsulation: Packets - Frames - Bits - Segments
Transport
Data Link (LLC sublayer)
Segments - packets - frames - bits
Data - segment - packet - frame - bit

7. Which layer combines bits into bytes and bytes into frames - uses MAC addressing - and provides error detection?
The Transport layer user virtual circuits to create a reliable connection between two hosts.
RJ45 UTP crossover cable.
The Data Link layer is responsible for the framing of data packets.
Transport

8. Acknowledgments - sequencing - and flow control are characteristics of which OSI layer?
D8:1B:3D:76
Layer 4
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
Segments - packets - frames - bits

9. This layer uses service access points.
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 Link (LLC sublayer)
Network
198.211.57.209

10. Which layer segments and reassembles data into a data stream?
Transport
Buffering - windowing - congestion avoidance
Fiber-opticcable
The Session layer creates sessions between different hosts' applications.

11. Which layer defines how data is formatted - presented - encoded - and converted for use on the network?
The Transport layer segments user data.
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.
Data - segment - packet - frame - bit

12. Which layer is represented by segments?
The Transport layer segments user data.
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 and repeater
204.51.170.85

13. This device creates one big collision domain and one large broadcast domain.
Buffering - windowing - congestion avoidance
Hub
132.210.184.166
Hub and repeater

14. This device can never run full duplex.
Data Link (LLC sublayer)
Router
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
Hub

15. Convert 10000100.11010010.10111000.10100110 to decimal IP format.
RJ45 UTP rolled cable.
132.210.184.166
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

16. This device uses hardware addresses to filter a network.
Data Link (LLC sublayer)
Bridge or switch
Hub
198.211.57.209

17. Routers operate at layer __. LAN switches operate at layer __. Ethernet hubs operate at layer __. Word processing operates at layer __.
The Physical layer is responsible for the electrical and mechanical connections between devices.
3 - 2 - 1 - none
The Network layer provides logical addressing - typically IP addressing and routing.
The Data Link layer is responsible for the framing of data packets.

18. What is the purpose of flow control?
To provide a means for the receiver to govern the amount of data sent by the sender.
The Data Link layer is responsible for the framing of data packets.
The Network layer creates packets out of segments handed down from the Transport layer.
Transport

19. Convert 10000100.11010010.01000011.10110011 to hexadecimal format.
Hub
198.211.57.209
The Network layer creates packets out of segments handed down from the Transport layer.
84:D2:43:B3

20. When data is encapsulated - which is the correct order?
The Data Link layer frames packets received from the Network layer.
Data - segment - packet - frame - bit
The Data Link layer is responsible for the framing of data packets.
The Physical layer is responsible for the electrical and mechanical connections between devices.

21. This device creates many smaller collision domains - but the network is still one large broadcast domain.
RJ45 UTP crossover cable.
Router
Switch or bridge
Segments - packets - frames - bits

22. What type of RJ45 UTP cable do you use to connect a PC's COM port to a router or switch console port?
Data - segment - packet - frame - bit
Data Link & Physical
RJ45 UTP rolled cable.
Switch to switch - host to host - switch to host

23. Which layer is represented by packets?
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 creates packets out of segments handed down from the Transport layer.
Router
Hub

24. What are two purposes for segmentation with a bridge?
204.51.170.85
To create more collision domains and to add more bandwidth for users.
Data Link & Physical
Router

25. This device sends and receives information about the Network layer.
3 - 2 - 1 - none
RJ45 UTP crossover cable.
Router
Hub and repeater

26. You have the following binary number: 10110111 - What are the decimal and hexadecimal equivalents?
183/B7
Transport
The Data Link layer is responsible for the framing of data packets.
RJ45 UTP rolled cable.

27. Which layer provides the physical transmission of the data and handles error notification - network topology - and flow control?
The Data Link layer frames packets received from the Network 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.
Data Link
Transport

28. Which layer is represented by bits?
Hub
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Packet switching - Packet filtering - Internetwork communication - Path selection
RJ45 UTP rolled cable.

29. Which of the following are 3 common types of flow control?
The Data Link layer frames packets received from the Network layer.
Buffering - windowing - congestion avoidance
132.210.184.166
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

30. Which layer is responsible for converting data packets from the Data Link layer into electrical signals?
The Transport layer user virtual circuits to create a reliable connection between two hosts.
The Physical layer is responsible for the electrical and mechanical connections between devices.
3 - 2 - 1 - none
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.

31. 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
Decrease the window size.
84:D2:43:B3
Buffering - windowing - congestion avoidance

32. This device can measure the distance to a remote network.
00001010.00001011.00001100.01100011
Router
Switch to switch - host to host - switch to host
The Session layer sets up - maintains - and terminates sessions between applications.

33. This layer creates a virtual circuit before transmitting between two end stations.
Transport
Hub
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Router

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
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
3 - 2 - 1 - none
Transport

35. Which layer is represented by frames?
The Data Link layer frames packets received from the Network layer.
To create more collision domains and to add more bandwidth for users.
3 - 2 - 1 - none
Router

36. Convert 11001100.00110011.10101010.01010101 to decimal IP format.
Switch or bridge
The Network layer creates packets out of segments handed down from the Transport layer.
204.51.170.85
RJ45 UTP crossover cable.

37. 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 Physical layer is responsible for the electrical and mechanical connections between devices.
Data Link (LLC sublayer)

38. Logical addressing is used at this layer.
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).
Layer 4
The Network layer provides logical addressing - typically IP addressing and routing.

39. Convert 11011000.00011011.00111101.01110110 to hexadecimal format.
D8:1B:3D:76
The Data Link layer frames packets received from the Network layer.
00001010.00001011.00001100.01100011
Fiber-opticcable

40. 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?
132.210.184.166
The Transport layer user virtual circuits to create a reliable connection between two hosts.
Router
204.51.170.85

41. Convert 11000110.11010011.00111001.11010001 to decimal IP format.
Hub
Segments - packets - frames - bits
Transport
198.211.57.209

42. What is the bit length and expression form of a MAC address?
48 bits (6 bytes)
Router
Transport
Decrease the window size.

43. 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.
Hub
Transport
198.211.57.209

44. Convert 172.16.20.55 to binary format.
The Data Link layer frames packets received from the Network layer.
10101100.00010000.00010100.00110111
Packet switching - Packet filtering - Internetwork communication - Path selection
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

45. This layer supports flow control and sequencing.
The Network layer provides routing through an internetwork and logical addressing.
The Network layer creates packets out of segments handed down from the Transport layer.
Transport
The Physical layer is responsible for transporting 1s and 0s in a digital signal.

46. Convert 10.11.12.99 to binary format.
Router
Transport
00001010.00001011.00001100.01100011
Switch to switch - host to host - switch to host

47. Why does the data communication industry use the layered OSI reference model? (Name two)
The Session layer sets up - maintains - and terminates sessions between applications.
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.
Fiber-opticcable
The Transport layer segments user data.

48. What type of RJ45 UTP cable is used between switches?
RJ45 UTP crossover cable.
The Network layer provides logical addressing - typically IP addressing and routing.
CA:F5:83:EB
48 bits (6 bytes)

49. 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.
The Session layer creates sessions between different hosts' applications.
Router

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