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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. 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.
Layer 4
Network
Data Link & Physical

2. 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.
RJ45 UTP crossover cable.
The Session layer sets up - maintains - and terminates sessions between applications.
Transport

3. Convert 10000100.11010010.01000011.10110011 to hexadecimal format.
48 bits (6 bytes)
Switch or bridge
The Transport layer user virtual circuits to create a reliable connection between two hosts.
84:D2:43:B3

4. Which layer is represented by packets?
132.210.184.166
00001010.00001011.00001100.01100011
To create more collision domains and to add more bandwidth for users.
The Network layer creates packets out of segments handed down from the Transport layer.

5. Convert 11001010.11110101.10000011.11101011 to hexadecimal format.
Hub
CA:F5:83:EB
Switch to switch - host to host - switch to host
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.

6. Which layer defines how data is formatted - presented - encoded - and converted for use on the network?
Network
Fiber-opticcable
Router
The Presentation layer makes sure that data is in a readable format for the Application layer.

7. Which layer combines bits into bytes and bytes into frames - uses MAC addressing - and provides error detection?
Data - segment - packet - frame - bit
The Data Link layer is responsible for the framing of data packets.
Layer 4
Hub

8. Which layer 1 devices can be used to enlarge the area covered by a single LAN segment?
Router
Router
Hub and repeater
84:D2:43:B3

9. Convert 11011000.00011011.00111101.01110110 to hexadecimal format.
The Presentation layer makes sure that data is in a readable format for the Application layer.
The Transport layer user virtual circuits to create a reliable connection between two hosts.
D8:1B:3D:76
Transport

10. You want to implement a network medium that is not susceptible to EMI. Which type of cabling should you use?
The Physical layer is responsible for the electrical and mechanical connections between devices.
Fiber-opticcable
The Transport layer segments user data.
Bridge or switch

11. 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 Physical layer is responsible for the electrical and mechanical connections between devices.
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).
Transport
Fiber-opticcable

12. Segmentation of a data stream happens at which layer of the OSI model?
Transport
To provide a means for the receiver to govern the amount of data sent by the sender.
00001010.00001011.00001100.01100011
The Physical layer is responsible for the electrical and mechanical connections between devices.

13. Which layer is represented by segments?
Transport
11000000.10101000.00001010.00001111
The Transport layer segments user data.
84:D2:43:B3

14. This device can never run full duplex.
Hub
The Network layer creates packets out of segments handed down from the Transport layer.
The Session layer creates sessions between different hosts' applications.
Data Link (LLC sublayer)

15. You have the following binary number: 10110111 - What are the decimal and hexadecimal equivalents?
183/B7
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
Segments - packets - frames - bits
3 - 2 - 1 - none

16. What are two purposes for segmentation with a bridge?
To create more collision domains and to add more bandwidth for users.
RJ45 UTP rolled cable.
The Transport layer user virtual circuits to create a reliable connection between two hosts.
Source and destination MAC address and FCS field

17. This device creates many smaller collision domains - but the network is still one large broadcast domain.
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
Switch or bridge
3 - 2 - 1 - none

18. What is the purpose of flow control?
Data Link & Physical
D8:1B:3D:76
To provide a means for the receiver to govern the amount of data sent by the sender.
CA:F5:83:EB

19. This device sends and receives information about the Network layer.
The Network layer provides logical addressing - typically IP addressing and routing.
Network
Data Link
Router

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?
Buffering - windowing - congestion avoidance
Data Link
The Transport layer user virtual circuits to create a reliable connection between two hosts.
Source and destination MAC address and FCS field

21. Put the following in order of encapsulation: Packets - Frames - Bits - Segments
Network
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
To create more collision domains and to add more bandwidth for users.
Segments - packets - frames - bits

22. Which layer manages device addressing - tracks the location of devices on the network - and determines the best way to move data?
Network
Hub
Router
The Data Link layer is responsible for the framing of data packets.

23. Which layer provides the physical transmission of the data and handles error notification - network topology - and flow control?
Transport
Data Link
Segments - packets - frames - bits
48 bits (6 bytes)

24. What type of RJ45 UTP cable is used between switches?
RJ45 UTP crossover cable.
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
To provide a means for the receiver to govern the amount of data sent by the sender.
Layer 4

25. Ethernet is defined at these layers.
D8:1B:3D:76
The Session layer sets up - maintains - and terminates sessions between applications.
Data Link & Physical
The Transport layer segments user data.

26. This device creates one big collision domain and one large broadcast domain.
Data Link (LLC sublayer)
Data Link
The Presentation layer makes sure that data is in a readable format for the Application layer.
Hub

27. Which layer is represented by frames?
The Transport layer user virtual circuits to create a reliable connection between two hosts.
Fiber-opticcable
The Physical layer is responsible for the electrical and mechanical connections between devices.
The Data Link layer frames packets received from the Network layer.

28. 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.
The Network layer creates packets out of segments handed down from the Transport layer.
The Session layer creates sessions between different hosts' applications.
The Network layer provides logical addressing - typically IP addressing and routing.

29. What are two unique characteristics of half-duplex Ethernet when compared to full-duplex Ethernet?
To provide a means for the receiver to govern the amount of data sent by the sender.
Switch to switch - host to host - switch to host
The Data Link layer is responsible for the framing of data packets.
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.

30. This device can measure the distance to a remote network.
The Session layer sets up - maintains - and terminates sessions between applications.
Network
Router
Transport

31. Convert 192.168.10.15 to binary format.
Transport
Data Link & Physical
84:D2:43:B3
11000000.10101000.00001010.00001111

32. This device uses hardware addresses to filter a network.
To create more collision domains and to add more bandwidth for users.
Bridge or switch
48 bits (6 bytes)
The Network layer provides logical addressing - typically IP addressing and routing.

33. This device breaks up collision domains and broadcast domains.
Router
Switch to switch - host to host - switch to host
The Session layer sets up - maintains - and terminates sessions between applications.
To create more collision domains and to add more bandwidth for users.

34. Which layer segments and reassembles data into a data stream?
The Transport layer user virtual circuits to create a reliable connection between two hosts.
Hub
Transport
The Physical layer is responsible for transporting 1s and 0s in a digital signal.

35. This layer supports flow control and sequencing.
00001010.00001011.00001100.01100011
Router
The Network layer creates packets out of segments handed down from the Transport layer.
Transport

36. This layer creates a virtual circuit before transmitting between two end stations.
Transport
3 - 2 - 1 - none
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).
Hub

37. Logical addressing is used at this layer.
The Network layer creates packets out of segments handed down from the Transport layer.
Buffering - windowing - congestion avoidance
Network
The Network layer provides routing through an internetwork and logical addressing.

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

39. This layer uses service access points.
RJ45 UTP crossover cable.
Data Link (LLC sublayer)
The Transport layer user virtual circuits to create a reliable connection between two hosts.
D8:1B:3D:76

40. Which layer is responsible for creating - managing - and terminating sessions between applications?
RJ45 UTP rolled cable.
Switch or bridge
The Session layer sets up - maintains - and terminates sessions between applications.
Data Link (LLC sublayer)

41. Acknowledgments - sequencing - and flow control are characteristics of which OSI layer?
Router
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Layer 4
Hub and repeater

42. Convert 10.11.12.99 to binary format.
00001010.00001011.00001100.01100011
The Data Link layer is responsible for the framing of data packets.
Fiber-opticcable
84:D2:43:B3

43. What is the bit length and expression form of a MAC address?
Packet switching - Packet filtering - Internetwork communication - Path selection
Transport
48 bits (6 bytes)
Segments - packets - frames - bits

44. Name three types of connections that can use full duplex.
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
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. Name four router functions.
Packet switching - Packet filtering - Internetwork communication - Path selection
Router
Network
The Data Link layer frames packets received from the Network layer.

46. Which layer is represented by bits?
The Transport layer user virtual circuits to create a reliable connection between two hosts.
Hub and repeater
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
10101100.00010000.00010100.00110111

47. Which of the following are 3 common types of flow control?
Transport
Hub
Buffering - windowing - congestion avoidance
132.210.184.166

48. Convert 11000110.11010011.00111001.11010001 to decimal IP format.
198.211.57.209
Network
Packet switching - Packet filtering - Internetwork communication - Path selection
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.

49. Convert 172.16.20.55 to binary format.
Network
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
Source and destination MAC address and FCS field
10101100.00010000.00010100.00110111

50. Routers operate at layer __. LAN switches operate at layer __. Ethernet hubs operate at layer __. Word processing operates at layer __.
3 - 2 - 1 - none
132.210.184.166
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Fiber-opticcable