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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
Segments - packets - frames - bits
The Data Link layer is responsible for the framing of data packets.
Fiber-opticcable
The Physical layer is responsible for the electrical and mechanical connections between devices.

2. Which layer is represented by frames?
Data Link & Physical
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 Data Link layer frames packets received from the Network layer.
Transport

3. Convert 11011000.00011011.00111101.01110110 to hexadecimal format.
D8:1B:3D:76
Transport
The Transport layer user virtual circuits to create a reliable connection between two hosts.
The Transport layer segments user data.

4. Which layer is represented by packets?
The Network layer creates packets out of segments handed down from the Transport layer.
Network
The Network layer provides logical addressing - typically IP addressing and routing.
Buffering - windowing - congestion avoidance

5. Name four router functions.
The Presentation layer makes sure that data is in a readable format for the Application layer.
Router
84:D2:43:B3
Packet switching - Packet filtering - Internetwork communication - Path selection

6. This device breaks up collision domains and broadcast domains.
Router
Network
11000000.10101000.00001010.00001111
183/B7

7. 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
Data Link & Physical
The Presentation layer makes sure that data is in a readable format for the Application layer.
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 Transport layer segments user data.

8. 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.
The Presentation layer makes sure that data is in a readable format for the Application layer.
Transport

9. This layer creates a virtual circuit before transmitting between two end stations.
183/B7
Transport
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).

10. Which layer is responsible for converting data packets from the Data Link layer into electrical signals?
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.
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
D8:1B:3D:76

11. How does a host on an Ethernet LAN know when to transmit after a collision has occurred? (Name two)
198.211.57.209
Buffering - windowing - congestion avoidance
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
Segments - packets - frames - bits

12. This device can never run full duplex.
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
The Session layer creates sessions between different hosts' applications.
Hub

13. This device uses hardware addresses to filter a network.
11000000.10101000.00001010.00001111
48 bits (6 bytes)
Bridge or switch
Source and destination MAC address and FCS field

14. You have the following binary number: 10110111 - What are the decimal and hexadecimal equivalents?
183/B7
48 bits (6 bytes)
132.210.184.166
Data Link

15. Convert 172.16.20.55 to binary format.
The Presentation layer makes sure that data is in a readable format for the Application layer.
Hub
10101100.00010000.00010100.00110111
Data Link (LLC sublayer)

16. When data is encapsulated - which is the correct order?
Data - segment - packet - frame - bit
132.210.184.166
The Transport layer user virtual circuits to create a reliable connection between two hosts.
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.

17. What is the bit length and expression form of a MAC address?
48 bits (6 bytes)
Network
Router
The Physical layer is responsible for the electrical and mechanical connections between devices.

18. Convert 11001100.00110011.10101010.01010101 to decimal IP format.
204.51.170.85
Data - segment - packet - frame - bit
D8:1B:3D:76
The Session layer creates sessions between different hosts' applications.

19. This layer uses service access points.
To create more collision domains and to add more bandwidth for users.
198.211.57.209
The Data Link layer is responsible for the framing of data packets.
Data Link (LLC sublayer)

20. Convert 11000110.11010011.00111001.11010001 to decimal IP format.
Fiber-opticcable
198.211.57.209
Network
11000000.10101000.00001010.00001111

21. Acknowledgments - sequencing - and flow control are characteristics of which OSI layer?
Data Link (LLC sublayer)
3 - 2 - 1 - none
Layer 4
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.

22. What is the purpose of flow control?
The Presentation layer makes sure that data is in a readable format for the Application layer.
Transport
Data Link (LLC sublayer)
To provide a means for the receiver to govern the amount of data sent by the sender.

23. Which layer combines bits into bytes and bytes into frames - uses MAC addressing - and provides error detection?
The Data Link layer is responsible for the framing of data packets.
84:D2:43:B3
Decrease the window size.
Hub

24. Which layer provides logical addressing that routers will use for path determination?
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.
183/B7
Switch to switch - host to host - switch to host
The Network layer provides logical addressing - typically IP addressing and routing.

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

26. At which layer is routing implemented - enabling connections and path selection between two end systems?
The Network layer provides routing through an internetwork and logical addressing.
To provide a means for the receiver to govern the amount of data sent by the sender.
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
Segments - packets - frames - bits

27. Convert 10.11.12.99 to binary format.
Data - segment - packet - frame - bit
11000000.10101000.00001010.00001111
The Data Link layer is responsible for the framing of data packets.
00001010.00001011.00001100.01100011

28. Which layer 1 devices can be used to enlarge the area covered by a single LAN segment?
Switch or bridge
Hub and repeater
To provide a means for the receiver to govern the amount of data sent by the sender.
Source and destination MAC address and FCS field

29. This device can measure the distance to a remote network.
Data - segment - packet - frame - bit
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).
Router

30. Which layer provides the physical transmission of the data and handles error notification - network topology - and flow control?
198.211.57.209
Data Link
Transport
Switch to switch - host to host - switch to host

31. What type of RJ45 UTP cable is used between switches?
The Presentation layer makes sure that data is in a readable format for the Application layer.
RJ45 UTP crossover cable.
The Network layer creates packets out of segments handed down from the Transport layer.
10101100.00010000.00010100.00110111

32. Which layer segments and reassembles data into a data stream?
Transport
132.210.184.166
Hub
The Session layer sets up - maintains - and terminates sessions between applications.

33. This device creates one big collision domain and one large broadcast domain.
Hub
Layer 4
Data - segment - packet - frame - bit
Router

34. Ethernet is defined at these layers.
Router
Data Link & Physical
D8:1B:3D:76
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

35. Why does the data communication industry use the layered OSI reference model? (Name two)
To provide a means for the receiver to govern the amount of data sent by the sender.
The Session layer creates sessions between different hosts' applications.
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.
Network

36. Which layer specifies voltage - wire speed - and pinout cables and moves bits between devices?
Network
The Physical layer is responsible for the electrical and mechanical connections between devices.
Hub
204.51.170.85

37. What are two unique characteristics of half-duplex Ethernet when compared to full-duplex Ethernet?
Data Link (LLC sublayer)
To create more collision domains and to add more bandwidth for users.
Switch or bridge
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.

38. Logical addressing is used at this layer.
48 bits (6 bytes)
The Session layer creates sessions between different hosts' applications.
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.

39. This layer supports flow control and sequencing.
Transport
Buffering - windowing - congestion avoidance
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
Router

40. Which of the following are 3 common types of flow control?
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
Segments - packets - frames - bits
The Data Link layer frames packets received from the Network layer.

41. What are two purposes for segmentation with a bridge?
To create more collision domains and to add more bandwidth for users.
204.51.170.85
Network
11000000.10101000.00001010.00001111

42. Which layer is responsible for creating - managing - and terminating sessions between applications?
D8:1B:3D:76
11000000.10101000.00001010.00001111
Fiber-opticcable
The Session layer sets up - maintains - and terminates sessions between applications.

43. Routers operate at layer __. LAN switches operate at layer __. Ethernet hubs operate at layer __. Word processing operates at layer __.
Data Link & Physical
84:D2:43:B3
Layer 4
3 - 2 - 1 - none

44. Convert 192.168.10.15 to binary format.
The Network layer provides logical addressing - typically IP addressing and routing.
Buffering - windowing - congestion avoidance
10101100.00010000.00010100.00110111
11000000.10101000.00001010.00001111

45. This device creates many smaller collision domains - but the network is still one large broadcast domain.
The Network layer provides logical addressing - typically IP addressing and routing.
Switch or bridge
Buffering - windowing - congestion avoidance
Network

46. You want to implement a network medium that is not susceptible to EMI. Which type of cabling should you use?
Fiber-opticcable
48 bits (6 bytes)
132.210.184.166
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

47. Which layer defines how data is formatted - presented - encoded - and converted for use on the network?
00001010.00001011.00001100.01100011
Transport
Router
The Presentation layer makes sure that data is in a readable format for the Application layer.

48. Convert 11001010.11110101.10000011.11101011 to hexadecimal format.
CA:F5:83:EB
Network
Network
Buffering - windowing - congestion avoidance

49. What type of RJ45 UTP cable do you use to connect a PC's COM port to a router or switch console port?
The Data Link layer is responsible for the framing of data packets.
To create more collision domains and to add more bandwidth for users.
RJ45 UTP rolled cable.
Buffering - windowing - congestion avoidance

50. Which two fields are contained within an IEEE Ethernet frame header?
The Session layer creates sessions between different hosts' applications.
The Network layer creates packets out of segments handed down from the Transport layer.
D8:1B:3D:76
Source and destination MAC address and FCS field