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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 of the following are 3 common types of flow control?
Layer 4
Buffering - windowing - congestion avoidance
The Physical layer is responsible for the electrical and mechanical connections between devices.
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.

2. What type of RJ45 UTP cable do you use to connect a PC's COM port to a router or switch console port?
198.211.57.209
Data Link
48 bits (6 bytes)
RJ45 UTP rolled cable.

3. Which layer is represented by bits?
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Hub
The Network layer provides routing through an internetwork and logical addressing.
Transport

4. Which layer is represented by segments?
Source and destination MAC address and FCS field
48 bits (6 bytes)
The Transport layer segments user data.
10101100.00010000.00010100.00110111

5. Convert 11000110.11010011.00111001.11010001 to decimal IP format.
198.211.57.209
The Transport layer user virtual circuits to create a reliable connection between two hosts.
10101100.00010000.00010100.00110111
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.

6. This layer supports flow control and sequencing.
The Presentation layer makes sure that data is in a readable format for the Application layer.
Transport
183/B7
Decrease the window size.

7. What type of RJ45 UTP cable is used between switches?
The Transport layer user virtual circuits to create a reliable connection between two hosts.
Fiber-opticcable
Switch or bridge
RJ45 UTP crossover cable.

8. 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.
Data Link (LLC sublayer)
Transport
The Data Link layer is responsible for the framing of data packets.

9. 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.
Buffering - windowing - congestion avoidance
Decrease the window size.
The Data Link layer is responsible for the framing of data packets.

10. Name four router functions.
Packet switching - Packet filtering - Internetwork communication - Path selection
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.

11. This device can measure the distance to a remote network.
Hub
204.51.170.85
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Router

12. This device can never run full duplex.
Hub
The Session layer creates sessions between different hosts' applications.
Transport
3 - 2 - 1 - none

13. This device sends and receives information about the Network layer.
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
Buffering - windowing - congestion avoidance
Router

14. 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?
Buffering - windowing - congestion avoidance
183/B7
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Decrease the window size.

15. Which layer is represented by packets?
RJ45 UTP crossover cable.
Decrease the window size.
132.210.184.166
The Network layer creates packets out of segments handed down from the Transport layer.

16. Which layer segments and reassembles data into a data stream?
Router
D8:1B:3D:76
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.

17. This layer uses service access points.
The Data Link layer is responsible for the framing of data packets.
84:D2:43:B3
Data Link (LLC sublayer)
Transport

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?
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
Hub and repeater
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Data Link (LLC sublayer)

19. Segmentation of a data stream happens at which layer of the OSI model?
Transport
RJ45 UTP rolled cable.
The Session layer sets up - maintains - and terminates sessions between applications.
Bridge or switch

20. 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 Network layer provides routing through an internetwork and logical addressing.
Bridge or switch
The Transport layer user virtual circuits to create a reliable connection between two hosts.
The Data Link layer frames packets received from the Network layer.

21. Which layer is represented by frames?
Data - segment - packet - frame - bit
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
The Data Link layer frames packets received from the Network layer.
10101100.00010000.00010100.00110111

22. Convert 10.11.12.99 to binary format.
Hub
00001010.00001011.00001100.01100011
Router
To provide a means for the receiver to govern the amount of data sent by the sender.

23. This device creates many smaller collision domains - but the network is still one large broadcast domain.
Packet switching - Packet filtering - Internetwork communication - Path selection
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
Hub and repeater

24. Which layer manages device addressing - tracks the location of devices on the network - and determines the best way to move data?
The Data Link layer frames packets received from the Network layer.
Network
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
The Session layer sets up - maintains - and terminates sessions between applications.

25. Ethernet is defined at these layers.
Segments - packets - frames - bits
3 - 2 - 1 - none
Layer 4
Data Link & Physical

26. Convert 11001100.00110011.10101010.01010101 to decimal IP format.
48 bits (6 bytes)
The Network layer provides logical addressing - typically IP addressing and routing.
204.51.170.85
10101100.00010000.00010100.00110111

27. Convert 172.16.20.55 to binary format.
10101100.00010000.00010100.00110111
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.
Switch to switch - host to host - switch to host
Packet switching - Packet filtering - Internetwork communication - Path selection

28. Convert 10000100.11010010.01000011.10110011 to hexadecimal format.
84:D2:43:B3
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
The Transport layer segments user data.

29. Acknowledgments - sequencing - and flow control are characteristics of which OSI layer?
The Network layer creates packets out of segments handed down from the Transport layer.
Layer 4
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.

30. Why does the data communication industry use the layered OSI reference model? (Name two)
Transport
Router
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.
Packet switching - Packet filtering - Internetwork communication - Path selection

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
204.51.170.85
Transport
RJ45 UTP crossover cable.

32. Put the following in order of encapsulation: Packets - Frames - Bits - Segments
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
D8:1B:3D:76
Segments - packets - frames - bits
Transport

33. What is the bit length and expression form of a MAC address?
Bridge or switch
Packet switching - Packet filtering - Internetwork communication - Path selection
RJ45 UTP crossover cable.
48 bits (6 bytes)

34. Which layer is responsible for converting data packets from the Data Link layer into electrical signals?
11000000.10101000.00001010.00001111
204.51.170.85
Transport
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.

35. 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
Transport
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).
Data - segment - packet - frame - bit
RJ45 UTP rolled cable.

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

37. This layer creates a virtual circuit before transmitting between two end stations.
Decrease the window size.
Transport
Layer 4
Data Link (LLC sublayer)

38. Convert 192.168.10.15 to binary format.
Transport
Data Link
11000000.10101000.00001010.00001111
Buffering - windowing - congestion avoidance

39. What are two purposes for segmentation with a bridge?
Switch to switch - host to host - switch to host
To create more collision domains and to add more bandwidth for users.
The Network layer provides routing through an internetwork and logical addressing.
Router

40. Routers operate at layer __. LAN switches operate at layer __. Ethernet hubs operate at layer __. Word processing operates at layer __.
The Session layer creates sessions between different hosts' applications.
Router
3 - 2 - 1 - none
Fiber-opticcable

41. This device uses hardware addresses to filter a network.
Transport
Bridge or switch
The Data Link layer frames packets received from the Network layer.
Switch or bridge

42. 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.
CA:F5:83:EB
Switch or bridge
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.

43. 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.
Router
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.

44. Logical addressing is used at this layer.
Data Link
Hub and repeater
Network
10101100.00010000.00010100.00110111

45. 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.
The Network layer provides routing through an internetwork and logical addressing.
Decrease the window size.
84:D2:43:B3

46. You want to implement a network medium that is not susceptible to EMI. Which type of cabling should you use?
To provide a means for the receiver to govern the amount of data sent by the sender.
84:D2:43:B3
Source and destination MAC address and FCS field
Fiber-opticcable

47. Which layer is responsible for creating - managing - and terminating sessions between applications?
Data - segment - packet - frame - bit
The Transport layer user virtual circuits to create a reliable connection between two hosts.
The Session layer sets up - maintains - and terminates sessions between applications.
Router

48. Which layer provides logical addressing that routers will use for path determination?
The Network layer creates packets out of segments handed down from the Transport layer.
Transport
Data Link
The Network layer provides logical addressing - typically IP addressing and routing.

49. Name three types of connections that can use full duplex.
Switch to switch - host to host - switch to host
The Network layer provides logical addressing - typically IP addressing and routing.
48 bits (6 bytes)
The Physical layer is responsible for the electrical and mechanical connections between devices.

50. You have the following binary number: 10110111 - What are the decimal and hexadecimal equivalents?
Data Link & Physical
183/B7
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.