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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 defines how data is formatted - presented - encoded - and converted for use on the network?
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.
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

2. Convert 11000110.11010011.00111001.11010001 to decimal IP format.
Layer 4
183/B7
198.211.57.209
84:D2:43:B3

3. Which two fields are contained within an IEEE Ethernet frame header?
183/B7
Source and destination MAC address and FCS field
Layer 4
The Network layer provides routing through an internetwork and logical addressing.

4. Acknowledgments - sequencing - and flow control are characteristics of which OSI layer?
The Network layer provides routing through an internetwork and logical addressing.
00001010.00001011.00001100.01100011
Router
Layer 4

5. Which layer combines bits into bytes and bytes into frames - uses MAC addressing - and provides error detection?
Data Link & Physical
48 bits (6 bytes)
Fiber-opticcable
The Data Link layer is responsible for the framing of data packets.

6. Routers operate at layer __. LAN switches operate at layer __. Ethernet hubs operate at layer __. Word processing operates at layer __.
Transport
Router
The Network layer provides routing through an internetwork and logical addressing.
3 - 2 - 1 - none

7. What type of RJ45 UTP cable is used between switches?
Network
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.
Data - segment - packet - frame - bit

8. Which layer provides logical addressing that routers will use for path determination?
The Network layer provides routing through an internetwork and logical addressing.
Buffering - windowing - congestion avoidance
D8:1B:3D:76
The Network layer provides logical addressing - typically IP addressing and routing.

9. At which layer is routing implemented - enabling connections and path selection between two end systems?
204.51.170.85
Data Link (LLC sublayer)
The Network layer provides routing through an internetwork and logical addressing.
3 - 2 - 1 - none

10. Which layer is represented by bits?
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Network
Data - segment - packet - frame - bit
The Data Link layer is responsible for the framing of data packets.

11. Put the following in order of encapsulation: Packets - Frames - Bits - Segments
Segments - packets - frames - bits
The Network layer provides logical addressing - typically IP addressing and routing.
The Transport layer user virtual circuits to create a reliable connection between two hosts.
Source and destination MAC address and FCS field

12. This device creates one big collision domain and one large broadcast domain.
Hub
D8:1B:3D:76
The Session layer creates sessions between different hosts' applications.
204.51.170.85

13. You want to implement a network medium that is not susceptible to EMI. Which type of cabling should you use?
Fiber-opticcable
CA:F5:83:EB
Router
Network

14. You have the following binary number: 10110111 - What are the decimal and hexadecimal equivalents?
Transport
Network
Source and destination MAC address and FCS field
183/B7

15. What is the purpose of flow control?
Router
To provide a means for the receiver to govern the amount of data sent by the sender.
Transport
Buffering - windowing - congestion avoidance

16. Convert 172.16.20.55 to binary format.
Data Link
To create more collision domains and to add more bandwidth for users.
10101100.00010000.00010100.00110111
Packet switching - Packet filtering - Internetwork communication - Path selection

17. 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?
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
Router
132.210.184.166
Decrease the window size.

18. Logical addressing is used at this layer.
00001010.00001011.00001100.01100011
3 - 2 - 1 - none
Router
Network

19. Convert 11001010.11110101.10000011.11101011 to hexadecimal format.
The Transport layer segments user data.
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.
CA:F5:83:EB
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).

20. Which layer segments and reassembles data into a data stream?
Segments - packets - frames - bits
Router
Hub and repeater
Transport

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.
RJ45 UTP rolled cable.
Transport

22. Which layer is represented by segments?
The Transport layer segments user data.
11000000.10101000.00001010.00001111
The Physical layer is responsible for the electrical and mechanical connections between devices.
To provide a means for the receiver to govern the amount of data sent by the sender.

23. Convert 10.11.12.99 to binary format.
The Data Link layer frames packets received from the Network layer.
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
00001010.00001011.00001100.01100011
Decrease the window size.

24. Which layer is represented by frames?
00001010.00001011.00001100.01100011
Buffering - windowing - congestion avoidance
The Data Link layer frames packets received from the Network layer.
The Network layer provides routing through an internetwork and logical addressing.

25. Convert 11001100.00110011.10101010.01010101 to decimal IP format.
RJ45 UTP rolled cable.
Transport
D8:1B:3D:76
204.51.170.85

26. Convert 10000100.11010010.01000011.10110011 to hexadecimal format.
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
84:D2:43:B3
Packet switching - Packet filtering - Internetwork communication - Path selection
Data Link (LLC sublayer)

27. Convert 11011000.00011011.00111101.01110110 to hexadecimal format.
D8:1B:3D:76
To provide a means for the receiver to govern the amount of data sent by the sender.
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).
CA:F5:83:EB

28. Which layer specifies voltage - wire speed - and pinout cables and moves bits between devices?
The Transport layer segments user data.
Transport
The Physical layer is responsible for the electrical and mechanical connections between devices.
Hub and repeater

29. This device uses hardware addresses to filter a network.
The Network layer creates packets out of segments handed down from the Transport layer.
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
Bridge or switch
Layer 4

30. What is the bit length and expression form of a MAC address?
Router
48 bits (6 bytes)
Switch to switch - host to host - switch to host
The Physical layer is responsible for the electrical and mechanical connections between devices.

31. Which layer is responsible for creating - managing - and terminating sessions between applications?
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
The Session layer sets up - maintains - and terminates sessions between applications.
RJ45 UTP rolled cable.
To create more collision domains and to add more bandwidth for users.

32. Which layer provides the physical transmission of the data and handles error notification - network topology - and flow control?
Network
Packet switching - Packet filtering - Internetwork communication - Path selection
84:D2:43:B3
Data Link

33. Which layer is responsible for converting data packets from the Data Link layer into electrical signals?
Switch or bridge
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 Data Link layer frames packets received from the Network layer.
Data - segment - packet - frame - bit

34. Name four router functions.
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
Buffering - windowing - congestion avoidance
Packet switching - Packet filtering - Internetwork communication - Path selection
Hub and repeater

35. Why does the data communication industry use the layered OSI reference model? (Name two)
Transport
The Network layer provides routing through an internetwork and logical addressing.
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.
204.51.170.85

36. Convert 192.168.10.15 to binary format.
Data Link
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
11000000.10101000.00001010.00001111
Segments - packets - frames - bits

37. This device breaks up collision domains and broadcast domains.
84:D2:43:B3
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
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. What are two unique characteristics of half-duplex Ethernet when compared to full-duplex Ethernet?
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.
Decrease the window size.
The Physical layer is responsible for transporting 1s and 0s in a digital signal.

39. Which layer manages device addressing - tracks the location of devices on the network - and determines the best way to move data?
Transport
Network
Hub and repeater
10101100.00010000.00010100.00110111

40. This layer supports flow control and sequencing.
10101100.00010000.00010100.00110111
Transport
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
CA:F5:83:EB

41. What are two purposes for segmentation with a bridge?
Bridge or switch
To create more collision domains and to add more bandwidth for users.
Network
Packet switching - Packet filtering - Internetwork communication - Path selection

42. Convert 10000100.11010010.10111000.10100110 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.
132.210.184.166
198.211.57.209
Buffering - windowing - congestion avoidance

43. This layer creates a virtual circuit before transmitting between two end stations.
Transport
3 - 2 - 1 - none
Bridge or switch
Data Link & Physical

44. Name three types of connections that can use full duplex.
Router
Switch to switch - host to host - switch to host
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

45. 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
204.51.170.85
The Transport layer user virtual circuits to create a reliable connection between two hosts.
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

46. Which of the following are 3 common types of flow control?
Buffering - windowing - congestion avoidance
The Network layer provides logical addressing - typically IP addressing and routing.
183/B7
The Session layer creates sessions between different hosts' applications.

47. When data is encapsulated - which is the correct order?
The Data Link layer is responsible for the framing of data packets.
Data Link & Physical
Data - segment - packet - frame - bit
84:D2:43:B3

48. Ethernet is defined at these layers.
The Physical layer is responsible for the electrical and mechanical connections between devices.
Hub
Data Link & Physical
The Physical layer is responsible for transporting 1s and 0s in a digital signal.

49. This device can never run full duplex.
Decrease the window size.
204.51.170.85
Data Link (LLC sublayer)
Hub

50. How does a host on an Ethernet LAN know when to transmit after a collision has occurred? (Name two)
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
The Transport layer user virtual circuits to create a reliable connection between two hosts.
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.