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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?
Transport
Transport
The Transport layer user virtual circuits to create a reliable connection between two hosts.
Decrease the window size.

2. 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.
Network
132.210.184.166
3 - 2 - 1 - none

3. What is the purpose of flow control?
183/B7
Switch or bridge
CA:F5:83:EB
To provide a means for the receiver to govern the amount of data sent by the sender.

4. Convert 172.16.20.55 to binary format.
Data Link & Physical
3 - 2 - 1 - none
10101100.00010000.00010100.00110111
Router

5. Which layer is responsible for converting data packets from the Data Link layer into electrical signals?
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 Presentation layer makes sure that data is in a readable format for the Application layer.
Segments - packets - frames - bits
Switch to switch - host to host - switch to host

6. At which layer is routing implemented - enabling connections and path selection between two end systems?
00001010.00001011.00001100.01100011
Network
The Network layer provides routing through an internetwork and logical addressing.
Data Link

7. Which layer is represented by bits?
00001010.00001011.00001100.01100011
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
Bridge or switch
Switch to switch - host to host - switch to host

8. What are two unique characteristics of half-duplex Ethernet when compared to full-duplex Ethernet?
Network
Hub
Hub and repeater
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.

9. 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 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 Network layer provides routing through an internetwork and logical addressing.
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.

10. Which layer manages device addressing - tracks the location of devices on the network - and determines the best way to move data?
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.
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
Network
204.51.170.85

11. Why does the data communication industry use the layered OSI reference model? (Name two)
The Physical layer is responsible for the electrical and mechanical connections between devices.
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.
11000000.10101000.00001010.00001111
Network

12. Ethernet is defined at these layers.
The Session layer creates sessions between different hosts' applications.
Data Link & Physical
3 - 2 - 1 - none
Fiber-opticcable

13. Convert 11000110.11010011.00111001.11010001 to decimal IP format.
Half-duplex Ethernet operates in a shared collision domain. Half-duplex Ethernet has lower effective throughput.
Bridge or switch
198.211.57.209
The Data Link layer is responsible for the framing of data packets.

14. What is the bit length and expression form of a MAC address?
48 bits (6 bytes)
Hub and repeater
The Session layer creates sessions between different hosts' applications.
Fiber-opticcable

15. Segmentation of a data stream happens at which layer of the OSI model?
183/B7
Transport
Switch or bridge
48 bits (6 bytes)

16. Name four router functions.
To provide a means for the receiver to govern the amount of data sent by the sender.
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.
Transport
Packet switching - Packet filtering - Internetwork communication - Path selection

17. 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.
Hub and repeater
CA:F5:83:EB
RJ45 UTP crossover cable.

18. Which layer is represented by frames?
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
The Data Link layer frames packets received from the Network layer.
Transport
Network

19. Which layer defines how data is formatted - presented - encoded - and converted for use on the network?
RJ45 UTP rolled cable.
10101100.00010000.00010100.00110111
The Presentation layer makes sure that data is in a readable format for the Application layer.
Packet switching - Packet filtering - Internetwork communication - Path selection

20. Which layer is represented by packets?
Transport
The Physical layer is responsible for the electrical and mechanical connections between devices.
The Network layer creates packets out of segments handed down from the Transport layer.
Network

21. This device can measure the distance to a remote network.
Router
The Session layer creates sessions between different hosts' applications.
Hub
00001010.00001011.00001100.01100011

22. Logical addressing is used at this layer.
183/B7
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 crossover cable.
Network

23. What are two purposes for segmentation with a bridge?
To create more collision domains and to add more bandwidth for users.
Data Link & Physical
To provide a means for the receiver to govern the amount of data sent by the sender.
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.

24. Which layer segments and reassembles data into a data stream?
The Network layer creates packets out of segments handed down from the Transport layer.
Transport
Data Link (LLC sublayer)
Hub

25. You have the following binary number: 10110111 - What are the decimal and hexadecimal equivalents?
Segments - packets - frames - bits
204.51.170.85
183/B7
Layer 4

26. This layer supports flow control and sequencing.
Transport
Decrease the window size.
Bridge or switch
To create more collision domains and to add more bandwidth for users.

27. 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
183/B7
Decrease the window size.
The Network layer creates packets out of segments handed down from the Transport layer.

28. Routers operate at layer __. LAN switches operate at layer __. Ethernet hubs operate at layer __. Word processing operates at layer __.
Router
3 - 2 - 1 - none
The Physical layer is responsible for the electrical and mechanical connections between devices.
The Network layer provides logical addressing - typically IP addressing and routing.

29. This device sends and receives information about the Network layer.
Router
198.211.57.209
The Network layer creates packets out of segments handed down from the Transport layer.
183/B7

30. When data is encapsulated - which is the correct order?
Transport
Fiber-opticcable
Data - segment - packet - frame - bit
RJ45 UTP rolled cable.

31. Which of the following are 3 common types of flow control?
The Data Link layer frames packets received from the Network layer.
Buffering - windowing - congestion avoidance
CA:F5:83:EB
The Session layer creates sessions between different hosts' applications.

32. Name three types of connections that can use full duplex.
132.210.184.166
The Data Link layer is responsible for the framing of data packets.
Switch to switch - host to host - switch to host
The Network layer provides routing through an internetwork and logical addressing.

33. Convert 10000100.11010010.01000011.10110011 to hexadecimal format.
RJ45 UTP crossover cable.
The Session layer creates sessions between different hosts' applications.
84:D2:43:B3
Router

34. Convert 11001010.11110101.10000011.11101011 to hexadecimal format.
10101100.00010000.00010100.00110111
The Transport layer segments user data.
CA:F5:83:EB
Decrease the window size.

35. Which two fields are contained within an IEEE Ethernet frame header?
48 bits (6 bytes)
To create more collision domains and to add more bandwidth for users.
Transport
Source and destination MAC address and FCS field

36. Which layer 1 devices can be used to enlarge the area covered by a single LAN segment?
Hub and repeater
Data Link
Transport
198.211.57.209

37. Convert 192.168.10.15 to binary format.
Data Link & Physical
Hub
11000000.10101000.00001010.00001111
Data - segment - packet - frame - bit

38. You want to implement a network medium that is not susceptible to EMI. Which type of cabling should you use?
11000000.10101000.00001010.00001111
Fiber-opticcable
Router
The Data Link layer is responsible for the framing of data packets.

39. This device creates many smaller collision domains - but the network is still one large broadcast domain.
3 - 2 - 1 - none
Layer 4
Transport
Switch or bridge

40. Convert 10000100.11010010.10111000.10100110 to decimal IP format.
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.
132.210.184.166
The Network layer creates packets out of segments handed down from the Transport layer.
The Presentation layer makes sure that data is in a readable format for the Application layer.

41. This layer creates a virtual circuit before transmitting between two end stations.
84:D2:43:B3
RJ45 UTP rolled cable.
Data Link & Physical
Transport

42. Acknowledgments - sequencing - and flow control are characteristics of which OSI layer?
Bridge or switch
Source and destination MAC address and FCS field
132.210.184.166
Layer 4

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

44. Which layer is responsible for creating - managing - and terminating sessions between applications?
Network
Transport
Router
The Session layer sets up - maintains - and terminates sessions between applications.

45. Convert 11011000.00011011.00111101.01110110 to hexadecimal format.
204.51.170.85
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
Data Link (LLC sublayer)
D8:1B:3D:76

46. What type of RJ45 UTP cable do you use to connect a PC's COM port to a router or switch console port?
Hub
RJ45 UTP crossover cable.
00001010.00001011.00001100.01100011
RJ45 UTP rolled cable.

47. What type of RJ45 UTP cable is used between switches?
Data - segment - packet - frame - bit
To provide a means for the receiver to govern the amount of data sent by the sender.
Data Link (LLC sublayer)
RJ45 UTP crossover cable.

48. This device creates one big collision domain and 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
84:D2:43:B3
Hub
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.

49. Convert 11001100.00110011.10101010.01010101 to decimal IP format.
The Data Link layer is responsible for the framing of data packets.
132.210.184.166
204.51.170.85
Decrease the window size.

50. 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?
The Physical layer is responsible for transporting 1s and 0s in a digital signal.
PDUs at the Data Link layer are called frames. AS soon as you see frame in a question - you know the answer.
Transport
Hub