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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 combines bits into bytes and bytes into frames - uses MAC addressing - and provides error detection?
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
The Data Link layer is responsible for the framing of data packets.
Data - segment - packet - frame - bit
CA:F5:83:EB

2. What is the bit length and expression form of a MAC address?
204.51.170.85
48 bits (6 bytes)
Data Link & Physical
Layer 4

3. This device can never run full duplex.
Data Link (LLC sublayer)
Hub
Data Link
11000000.10101000.00001010.00001111

4. Why does the data communication industry use the layered OSI reference model? (Name two)
11000000.10101000.00001010.00001111
Network
132.210.184.166
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.

5. Ethernet is defined at these layers.
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
Transport
Data Link & Physical
To create more collision domains and to add more bandwidth for users.

6. Which layer 1 devices can be used to enlarge the area covered by a single LAN segment?
The Presentation layer makes sure that data is in a readable format for the Application layer.
The Network layer provides routing through an internetwork and logical addressing.
Hub and repeater
Transport

7. This device creates many smaller collision domains - but the network is still one large broadcast domain.
Switch to switch - host to host - switch to host
Router
D8:1B:3D:76
Switch or bridge

8. Which layer is responsible for converting data packets from the Data Link layer into electrical signals?
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.
00001010.00001011.00001100.01100011
11000000.10101000.00001010.00001111
The Data Link layer is responsible for the framing of data packets.

9. You want to implement a network medium that is not susceptible to EMI. Which type of cabling should you use?
Router
RJ45 UTP crossover cable.
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Fiber-opticcable

10. What are two unique characteristics of half-duplex Ethernet when compared to full-duplex Ethernet?
00001010.00001011.00001100.01100011
Hub
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.

11. This layer supports flow control and sequencing.
Network
Transport
Packet switching - Packet filtering - Internetwork communication - Path selection
The Data Link layer is responsible for the framing of data packets.

12. Convert 11011000.00011011.00111101.01110110 to hexadecimal format.
The Data Link layer is responsible for the framing of data packets.
Switch to switch - host to host - switch to host
D8:1B:3D:76
The Session layer sets up - maintains - and terminates sessions between applications.

13. Name three types of connections that can use full duplex.
Data - segment - packet - frame - bit
Switch to switch - host to host - switch to host
Hub
Segments - packets - frames - bits

14. What are two purposes for segmentation with a bridge?
To create more collision domains and to add more bandwidth for users.
The Session layer sets up - maintains - and terminates sessions between applications.
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
RJ45 UTP crossover cable.

15. Which of the following are 3 common types of flow control?
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.
Layer 4
RJ45 UTP rolled cable.
Buffering - windowing - congestion avoidance

16. Segmentation of a data stream happens at which layer of the OSI model?
Transport
The Session layer sets up - maintains - and terminates sessions between applications.
To provide a means for the receiver to govern the amount of data sent by the sender.
11000000.10101000.00001010.00001111

17. This layer uses service access points.
Transport
The Network layer provides routing through an internetwork and logical addressing.
Data Link (LLC sublayer)
The Transport layer segments user data.

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

19. Convert 11001010.11110101.10000011.11101011 to hexadecimal format.
Router
CA:F5:83:EB
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.
Packet switching - Packet filtering - Internetwork communication - Path selection

20. Acknowledgments - sequencing - and flow control are characteristics of which OSI layer?
The Network layer provides logical addressing - typically IP addressing and routing.
Layer 4
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

21. Which layer defines how data is formatted - presented - encoded - and converted for use on the 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.
The Presentation layer makes sure that data is in a readable format for the Application layer.
183/B7
198.211.57.209

22. This device sends and receives information about the Network layer.
Router
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.
The Presentation layer makes sure that data is in a readable format for the Application layer.

23. 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.
Router
Hub
Data Link (LLC sublayer)

24. 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?
Bridge or switch
Hub and repeater
Decrease the window size.
The Network layer creates packets out of segments handed down from the Transport layer.

25. 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?
Transport
The Data Link layer is responsible for the framing of data packets.
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
RJ45 UTP crossover cable.

26. What is the purpose of flow control?
48 bits (6 bytes)
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).
204.51.170.85
To provide a means for the receiver to govern the amount of data sent by the sender.

27. Convert 172.16.20.55 to binary format.
132.210.184.166
Fiber-opticcable
CA:F5:83:EB
10101100.00010000.00010100.00110111

28. Which two fields are contained within an IEEE Ethernet frame header?
Source and destination MAC address and FCS field
Switch to switch - host to host - switch to host
Layer 4
Transport

29. Logical addressing is used at this layer.
Network
Source and destination MAC address and FCS field
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

30. Convert 192.168.10.15 to binary 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.
Router
10101100.00010000.00010100.00110111
11000000.10101000.00001010.00001111

31. Convert 11000110.11010011.00111001.11010001 to decimal IP format.
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
Network
198.211.57.209
Hub

32. Which layer is represented by frames?
CA:F5:83:EB
The Data Link layer frames packets received from the Network layer.
RJ45 UTP rolled cable.
00001010.00001011.00001100.01100011

33. Which layer manages device addressing - tracks the location of devices on the network - and determines the best way to move data?
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
Network
Decrease the window size.
204.51.170.85

34. What type of RJ45 UTP cable do you use to connect a PC's COM port to a router or switch console port?
Network
The Network layer creates packets out of segments handed down from the Transport layer.
The Network layer provides routing through an internetwork and logical addressing.
RJ45 UTP rolled cable.

35. Convert 11001100.00110011.10101010.01010101 to decimal IP format.
204.51.170.85
RJ45 UTP crossover cable.
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
The Presentation layer makes sure that data is in a readable format for the Application layer.

36. What type of RJ45 UTP cable is used between switches?
Source and destination MAC address and FCS field
The Transport layer segments user data.
RJ45 UTP crossover cable.
183/B7

37. 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
Segments - packets - frames - bits
To provide a means for the receiver to govern the amount of data sent by the sender.
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).

38. How does a host on an Ethernet LAN know when to transmit after a collision has occurred? (Name two)
00001010.00001011.00001100.01100011
Switch or bridge
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.

39. This device breaks up collision domains and broadcast domains.
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.
RJ45 UTP rolled cable.
Data Link
Router

40. Which layer segments and reassembles data into a data stream?
The Data Link layer frames packets received from the Network layer.
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
Transport
Packet switching - Packet filtering - Internetwork communication - Path selection

41. This device uses hardware addresses to filter a network.
To provide a means for the receiver to govern the amount of data sent by the sender.
Packet switching - Packet filtering - Internetwork communication - Path selection
Bridge or switch
10101100.00010000.00010100.00110111

42. Convert 10.11.12.99 to binary format.
Switch to switch - host to host - switch to host
00001010.00001011.00001100.01100011
The Network layer creates packets out of segments handed down from the Transport layer.
Hub

43. Which layer provides logical addressing that routers will use for path determination?
The Presentation layer makes sure that data is in a readable format for the Application layer.
The Network layer provides logical addressing - typically IP addressing and routing.
132.210.184.166
Decrease the window size.

44. This device can measure the distance to a remote network.
Network
Router
Packet switching - Packet filtering - Internetwork communication - Path selection
The Physical layer is responsible for the electrical and mechanical connections between devices.

45. Convert 10000100.11010010.01000011.10110011 to hexadecimal format.
84:D2:43:B3
00001010.00001011.00001100.01100011
Data Link (LLC sublayer)
The Data Link layer is responsible for the framing of data packets.

46. You have the following binary number: 10110111 - What are the decimal and hexadecimal equivalents?
183/B7
Data Link
The Presentation layer makes sure that data is in a readable format for the Application layer.
Hub

47. This layer creates a virtual circuit before transmitting between two end stations.
Network
3 - 2 - 1 - none
198.211.57.209
Transport

48. Which layer specifies voltage - wire speed - and pinout cables and moves bits between devices?
Data - segment - packet - frame - bit
Network
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
The Physical layer is responsible for the electrical and mechanical connections between devices.

49. Which layer is responsible for creating - managing - and terminating sessions between applications?
Bridge or switch
Data Link
Hub
The Session layer sets up - maintains - and terminates sessions between applications.

50. Put the following in order of encapsulation: Packets - Frames - Bits - Segments
The Physical layer is responsible for the electrical and mechanical connections between devices.
Source and destination MAC address and FCS field
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.
Segments - packets - frames - bits