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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. Why does the data communication industry use the layered OSI reference model? (Name two)
00001010.00001011.00001100.01100011
Router
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).
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.

2. This device can never run full duplex.
Layer 4
Hub
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.
198.211.57.209

3. This device creates one big collision domain and one large broadcast domain.
Hub
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.
The Session layer creates sessions between different hosts' applications.

4. Convert 11011000.00011011.00111101.01110110 to hexadecimal format.
RJ45 UTP crossover cable.
D8:1B:3D:76
Segments - packets - frames - bits
The Network layer creates packets out of segments handed down from the Transport layer.

5. Convert 11000110.11010011.00111001.11010001 to decimal IP format.
RJ45 UTP crossover cable.
198.211.57.209
Transport
Packet switching - Packet filtering - Internetwork communication - Path selection

6. Which layer provides the physical transmission of the data and handles error notification - network topology - and flow control?
Router
Decrease the window size.
Data Link
To create more collision domains and to add more bandwidth for users.

7. This layer uses service access points.
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
Bridge or switch
Hub and repeater
Data Link (LLC sublayer)

8. 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 rolled cable.
Router
11000000.10101000.00001010.00001111

9. Put the following in order of encapsulation: Packets - Frames - Bits - Segments
D8:1B:3D:76
Segments - packets - frames - bits
RJ45 UTP rolled cable.
To create more collision domains and to add more bandwidth for users.

10. Which layer defines how data is formatted - presented - encoded - and converted for use on the network?
The Session layer creates sessions between different hosts' applications.
183/B7
84:D2:43:B3
The Presentation layer makes sure that data is in a readable format for the Application layer.

11. Which layer provides logical addressing that routers will use for path determination?
The Physical layer is responsible for the electrical and mechanical connections between devices.
The Network layer provides logical addressing - typically IP addressing and routing.
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
Switch or bridge

12. Which layer combines bits into bytes and bytes into frames - uses MAC addressing - and provides error detection?
The Transport layer segments user data.
Hub
198.211.57.209
The Data Link layer is responsible for the framing of data packets.

13. What type of RJ45 UTP cable is used between switches?
RJ45 UTP crossover cable.
To create more collision domains and to add more bandwidth for users.
48 bits (6 bytes)
Transport

14. What are two unique characteristics of half-duplex Ethernet when compared to full-duplex Ethernet?
Network
Data Link & Physical
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
Data Link (LLC sublayer)

15. Which layer is responsible for creating - managing - and terminating sessions between applications?
The Transport layer user virtual circuits to create a reliable connection between two hosts.
The Data Link layer is responsible for the framing of data packets.
The Session layer sets up - maintains - and terminates sessions between applications.
Packet switching - Packet filtering - Internetwork communication - Path selection

16. 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
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 Session layer creates sessions between different hosts' applications.
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).
The Physical layer is responsible for the electrical and mechanical connections between devices.

17. This layer supports flow control and sequencing.
198.211.57.209
Transport
To provide a means for the receiver to govern the amount of data sent by the sender.
The Network layer creates packets out of segments handed down from the Transport layer.

18. Ethernet is defined at these layers.
The Transport layer segments user data.
Hub and repeater
Data Link & Physical
Switch or bridge

19. This device sends and receives information about the Network layer.
Network
Transport
To create more collision domains and to add more bandwidth for users.
Router

20. Convert 11001100.00110011.10101010.01010101 to decimal IP format.
204.51.170.85
Hub and repeater
Transport
84:D2:43:B3

21. Segmentation of a data stream happens at which layer of the OSI model?
Source and destination MAC address and FCS field
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.
Bridge or switch

22. Convert 192.168.10.15 to binary format.
The Session layer creates sessions between different hosts' applications.
To provide a means for the receiver to govern the amount of data sent by the sender.
The Network layer provides logical addressing - typically IP addressing and routing.
11000000.10101000.00001010.00001111

23. Which layer is responsible for converting data packets from the Data Link layer into electrical signals?
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).
RJ45 UTP rolled cable.
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.
Transport

24. Acknowledgments - sequencing - and flow control are characteristics of which OSI layer?
Data Link
Data - segment - packet - frame - bit
The Physical layer is responsible for the electrical and mechanical connections between devices.
Layer 4

25. Routers operate at layer __. LAN switches operate at layer __. Ethernet hubs operate at layer __. Word processing operates at layer __.
198.211.57.209
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
3 - 2 - 1 - none
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.

26. Which layer is represented by bits?
RJ45 UTP rolled cable.
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 Physical layer is responsible for transporting 1s and 0s in a digital signal.
D8:1B:3D:76

27. You have the following binary number: 10110111 - What are the decimal and hexadecimal equivalents?
Hub
11000000.10101000.00001010.00001111
183/B7
Router

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

29. When data is encapsulated - which is the correct order?
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.
Segments - packets - frames - bits
Data - segment - packet - frame - bit
3 - 2 - 1 - none

30. Which two fields are contained within an IEEE Ethernet frame header?
Data - segment - packet - frame - bit
Source and destination MAC address and FCS field
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
The Session layer creates sessions between different hosts' applications.

31. What is the purpose of flow control?
To provide a means for the receiver to govern the amount of data sent by the sender.
3 - 2 - 1 - none
Bridge or switch
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).

32. This device creates many smaller collision domains - but the network is still one large broadcast domain.
Switch or bridge
Buffering - windowing - congestion avoidance
Network
Data Link & Physical

33. Convert 10000100.11010010.10111000.10100110 to decimal IP format.
The Data Link layer is responsible for the framing of data packets.
132.210.184.166
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.

34. Name four router functions.
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
132.210.184.166
Packet switching - Packet filtering - Internetwork communication - Path selection
00001010.00001011.00001100.01100011

35. Which layer segments and reassembles data into a data stream?
Fiber-opticcable
204.51.170.85
183/B7
Transport

36. Convert 10000100.11010010.01000011.10110011 to hexadecimal format.
The Physical layer is responsible for the electrical and mechanical connections between devices.
84:D2:43:B3
Transport
Buffering - windowing - congestion avoidance

37. 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?
Transport
The Transport layer user virtual circuits to create a reliable connection between two hosts.
11000000.10101000.00001010.00001111
Packet switching - Packet filtering - Internetwork communication - Path selection

38. This device can measure the distance to a remote network.
The Transport layer user virtual circuits to create a reliable connection between two hosts.
Bridge or switch
10101100.00010000.00010100.00110111
Router

39. This layer creates a virtual circuit before transmitting between two end stations.
Buffering - windowing - congestion avoidance
Transport
The Transport layer user virtual circuits to create a reliable connection between two hosts.
10101100.00010000.00010100.00110111

40. You want to implement a network medium that is not susceptible to EMI. Which type of cabling should you use?
Data Link (LLC sublayer)
The Network layer creates packets out of segments handed down from the Transport layer.
Fiber-opticcable
Transport

41. Which layer is represented by packets?
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
The Network layer creates packets out of segments handed down from the Transport layer.
10101100.00010000.00010100.00110111
204.51.170.85

42. Which layer is represented by frames?
RJ45 UTP rolled cable.
198.211.57.209
The Data Link layer frames packets received from the Network layer.
Transport

43. How does a host on an Ethernet LAN know when to transmit after a collision has occurred? (Name two)
The Data Link layer frames packets received from the Network layer.
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
Source and destination MAC address and FCS field
Segments - packets - frames - bits

44. Name three types of connections that can use full duplex.
The Network layer provides routing through an internetwork and logical addressing.
The Network layer provides logical addressing - typically IP addressing and routing.
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

45. What is the bit length and expression form of a MAC address?
3 - 2 - 1 - none
RJ45 UTP crossover cable.
204.51.170.85
48 bits (6 bytes)

46. What type of RJ45 UTP cable do you use to connect a PC's COM port to a router or switch console port?
To provide a means for the receiver to govern the amount of data sent by the sender.
Transport
Network
RJ45 UTP rolled cable.

47. Which layer 1 devices can be used to enlarge the area covered by a single LAN segment?
Data - segment - packet - frame - bit
Hub and repeater
48 bits (6 bytes)
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. This device uses hardware addresses to filter a network.
Bridge or switch
Transport
Layer 4
48 bits (6 bytes)

49. 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?
Hub
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.
Router
Decrease the window size.

50. At which layer is routing implemented - enabling connections and path selection between two end systems?
The Transport layer user virtual circuits to create a reliable connection between two hosts.
The Network layer provides routing through an internetwork and logical addressing.
Hub
The Physical layer is responsible for transporting 1s and 0s in a digital signal.