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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. Put the following in order of encapsulation: Packets - Frames - Bits - Segments
Transport
Hub
Transport
Segments - packets - frames - bits

2. Why does the data communication industry use the layered OSI reference model? (Name two)
Transport
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 Data Link layer frames packets received from the Network layer.

3. Which two fields are contained within an IEEE Ethernet frame header?
Fiber-opticcable
Source and destination MAC address and FCS field
The Network layer provides logical addressing - typically IP addressing and routing.
198.211.57.209

4. Which layer is represented by segments?
The Session layer creates sessions between different hosts' applications.
The Transport layer segments user data.
Hub
Data Link & Physical

5. Which layer is represented by bits?
To create more collision domains and to add more bandwidth for users.
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Buffering - windowing - congestion avoidance
The Network layer creates packets out of segments handed down from the Transport layer.

6. Which layer provides the physical transmission of the data and handles error notification - network topology - and flow control?
Data Link
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 - segment - packet - frame - bit

7. This device uses hardware addresses to filter a network.
Bridge or switch
The Session layer creates sessions between different hosts' applications.
132.210.184.166
The Data Link layer is responsible for the framing of data packets.

8. This device can never run full duplex.
Transport
Hub
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
Fiber-opticcable

9. This layer supports flow control and sequencing.
Transport
RJ45 UTP crossover cable.
Hub
The Physical layer is responsible for transporting 1s and 0s in a digital signal.

10. Which layer is represented by frames?
To create more collision domains and to add more bandwidth for users.
183/B7
The Data Link layer frames packets received from the Network layer.
The Data Link layer is responsible for the framing of data packets.

11. Which layer is responsible for converting data packets from the Data Link layer into electrical signals?
The Presentation layer makes sure that data is in a readable format for the Application layer.
48 bits (6 bytes)
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.
To create more collision domains and to add more bandwidth for users.

12. 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
CA:F5:83:EB
48 bits (6 bytes)
10101100.00010000.00010100.00110111
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).

13. You have the following binary number: 10110111 - What are the decimal and hexadecimal equivalents?
183/B7
Source and destination MAC address and FCS field
The Network layer provides logical addressing - typically IP addressing and routing.
The Session layer sets up - maintains - and terminates sessions between applications.

14. 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.
Source and destination MAC address and FCS field
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
48 bits (6 bytes)

15. This device creates one big collision domain and one large broadcast domain.
The Data Link layer is responsible for the framing of data packets.
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
Hub

16. What is the bit length and expression form of a MAC address?
The Session layer sets up - maintains - and terminates sessions between applications.
Router
48 bits (6 bytes)
The Data Link layer is responsible for the framing of data packets.

17. You want to implement a network medium that is not susceptible to EMI. Which type of cabling should you use?
The Session layer sets up - maintains - and terminates sessions between applications.
Transport
D8:1B:3D:76
Fiber-opticcable

18. Which layer provides logical addressing that routers will use for path determination?
The Network layer provides logical addressing - typically IP addressing and routing.
Data - segment - packet - frame - bit
Hub and repeater
The Session layer creates sessions between different hosts' applications.

19. 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.
Transport
The Network layer provides logical addressing - typically IP addressing and routing.
The Physical layer is responsible for transporting 1s and 0s in a digital signal.

20. 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 Transport layer user virtual circuits to create a reliable connection between two hosts.
Data - segment - packet - frame - bit
11000000.10101000.00001010.00001111

21. Which layer 1 devices can be used to enlarge the area covered by a single LAN segment?
Hub and repeater
The Data Link layer is responsible for the framing of data packets.
Data - segment - packet - frame - bit
132.210.184.166

22. This device creates many smaller collision domains - but the network is still one large broadcast domain.
Network
Hub
48 bits (6 bytes)
Switch or bridge

23. Convert 172.16.20.55 to binary format.
10101100.00010000.00010100.00110111
To provide a means for the receiver to govern the amount of data sent by the sender.
Switch or bridge
198.211.57.209

24. Convert 11001100.00110011.10101010.01010101 to decimal IP format.
The Session layer creates sessions between different hosts' applications.
Buffering - windowing - congestion avoidance
204.51.170.85
Source and destination MAC address and FCS field

25. What type of RJ45 UTP cable is used between switches?
Hub and repeater
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 Link & Physical
RJ45 UTP crossover cable.

26. At which layer is routing implemented - enabling connections and path selection between two end systems?
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Transport
The Network layer provides routing through an internetwork and logical addressing.
Fiber-opticcable

27. Convert 11001010.11110101.10000011.11101011 to hexadecimal format.
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
CA:F5:83:EB
132.210.184.166
The Network layer provides logical addressing - typically IP addressing and routing.

28. When data is encapsulated - which is the correct order?
The Transport layer user virtual circuits to create a reliable connection between two hosts.
Layer 4
10101100.00010000.00010100.00110111
Data - segment - packet - frame - bit

29. Which layer combines bits into bytes and bytes into frames - uses MAC addressing - and provides error detection?
Bridge or switch
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
To create more collision domains and to add more bandwidth for users.
The Data Link layer is responsible for the framing of data packets.

30. Which layer is responsible for creating - managing - and terminating sessions between applications?
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 provides logical addressing - typically IP addressing and routing.
Data Link & Physical
The Session layer sets up - maintains - and terminates sessions between applications.

31. This device can measure the distance to a remote network.
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.
10101100.00010000.00010100.00110111
Router
132.210.184.166

32. Convert 10.11.12.99 to binary format.
10101100.00010000.00010100.00110111
Switch or bridge
00001010.00001011.00001100.01100011
The Physical layer is responsible for transporting 1s and 0s in a digital signal.

33. 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
Router
Decrease the window size.
Segments - packets - frames - bits

34. Which layer defines how data is formatted - presented - encoded - and converted for use on the network?
Transport
Source and destination MAC address and FCS field
The Presentation layer makes sure that data is in a readable format for the Application layer.
Switch to switch - host to host - switch to host

35. Acknowledgments - sequencing - and flow control are characteristics of which OSI layer?
132.210.184.166
Layer 4
Data - segment - packet - frame - bit
Hub

36. What is the purpose of flow control?
Bridge or switch
Network
Layer 4
To provide a means for the receiver to govern the amount of data sent by the sender.

37. Which layer segments and reassembles data into a data stream?
Hub and repeater
Transport
204.51.170.85
10101100.00010000.00010100.00110111

38. This layer uses service access points.
Data Link (LLC sublayer)
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
Hub
Segments - packets - frames - bits

39. Convert 11000110.11010011.00111001.11010001 to decimal IP format.
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Decrease the window size.
198.211.57.209
To provide a means for the receiver to govern the amount of data sent by the sender.

40. This device breaks up collision domains and broadcast domains.
Layer 4
Router
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

41. This layer creates a virtual circuit before transmitting between two end stations.
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
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
Switch to switch - host to host - switch to host
Transport

42. 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?
The Network layer provides logical addressing - typically IP addressing and routing.
48 bits (6 bytes)
Decrease the window size.
84:D2:43:B3

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

44. 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?
Segments - packets - frames - bits
11000000.10101000.00001010.00001111
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
183/B7

45. Logical addressing is used at this layer.
Fiber-opticcable
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).
Network
Data Link & Physical

46. Routers operate at layer __. LAN switches operate at layer __. Ethernet hubs operate at layer __. Word processing operates at layer __.
The Session layer sets up - maintains - and terminates sessions between applications.
3 - 2 - 1 - none
Transport
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.

47. Segmentation of a data stream happens at which layer of the OSI model?
11000000.10101000.00001010.00001111
Transport
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
Hub and repeater

48. Convert 10000100.11010010.01000011.10110011 to hexadecimal format.
Bridge or switch
Buffering - windowing - congestion avoidance
Router
84:D2:43:B3

49. Name four router functions.
Packet switching - Packet filtering - Internetwork communication - Path selection
D8:1B:3D:76
Data - segment - packet - frame - bit
RJ45 UTP crossover cable.

50. Convert 11011000.00011011.00111101.01110110 to hexadecimal format.
D8:1B:3D:76
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
Transport
Router